Some vulnerabilities were discovered and corrected in the Linux 2.6 kernel :

Array index error in the gdth_read_event function in drivers/scsi/gdth.c in the Linux kernel before 2.6.32-rc8 allows local users to cause a denial of service or possibly gain privileges via a negative event index in an IOCTL request. (CVE-2009-3080)

The collect_rx_frame function in drivers/isdn/hisax/hfc_usb.c in the Linux kernel before 2.6.32-rc7 allows attackers to have an unspecified impact via a crafted HDLC packet that arrives over ISDN and triggers a buffer under-read. (CVE-2009-4005)

Additionally, the Linux kernel was updated to the stable release 2.6.27.45.

To update your kernel, please follow the directions located at :

http://www.mandriva.com/en/security/kernelupdate

Some vulnerabilities were discovered and corrected in the Linux 2.6 kernel :

Array index error in the gdth_read_event function in drivers/scsi/gdth.c in the Linux kernel before 2.6.32-rc8 allows local users to cause a denial of service or possibly gain privileges via a negative event index in an IOCTL request. (CVE-2009-3080)

The collect_rx_frame function in drivers/isdn/hisax/hfc_usb.c in the Linux kernel before 2.6.32-rc7 allows attackers to have an unspecified impact via a crafted HDLC packet that arrives over ISDN and triggers a buffer under-read. (CVE-2009-4005)

An issue was discovered in 2.6.32.x kernels, which sets unsecure permission for devtmpfs file system by default. (CVE-2010-0299)

Additionally, it was added support for Atheros AR2427 Wireless Network Adapter.

To update your kernel, please follow the directions located at :

http://www.mandriva.com/en/security/kernelupdate

Update to kernel 2.6.27.41:
http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.27.39 http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.27.40 http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.27.41

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Updated kernel packages that fix multiple security issues and three bugs are now available for Red Hat Enterprise Linux 4.

This update has been rated as having important security impact by the Red Hat Security Response Team.

The kernel packages contain the Linux kernel, the core of any Linux operating system.

This update fixes the following security issues :

* an array index error was found in the gdth driver in the Linux kernel. A local user could send a specially crafted IOCTL request that would cause a denial of service or, possibly, privilege escalation.
(CVE-2009-3080, Important)

* a flaw was found in the collect_rx_frame() function in the HiSax ISDN driver (hfc_usb) in the Linux kernel. An attacker could use this flaw to send a specially crafted HDLC packet that could trigger a buffer out of bounds, possibly resulting in a denial of service.
(CVE-2009-4005, Important)

* permission issues were found in the megaraid_sas driver (for SAS based RAID controllers) in the Linux kernel. The 'dbg_lvl' and 'poll_mode_io' files on the sysfs file system ('/sys/') had world-writable permissions. This could allow local, unprivileged users to change the behavior of the driver. (CVE-2009-3889, CVE-2009-3939, Moderate)

* a buffer overflow flaw was found in the hfs_bnode_read() function in the HFS file system implementation in the Linux kernel. This could lead to a denial of service if a user browsed a specially crafted HFS file system, for example, by running 'ls'. (CVE-2009-4020, Low)

This update also fixes the following bugs :

* if a process was using ptrace() to trace a multi-threaded process, and that multi-threaded process dumped its core, the process performing the trace could hang in wait4(). This issue could be triggered by running 'strace -f' on a multi-threaded process that was dumping its core, resulting in the strace command hanging. (BZ#555869)

* a bug in the ptrace() implementation could have, in some cases, caused ptrace_detach() to create a zombie process if the process being traced was terminated with a SIGKILL signal. (BZ#555869)

* the RHSA-2010:0020 update resolved an issue (CVE-2009-4537) in the Realtek r8169 Ethernet driver. This update implements a better solution for that issue. Note: This is not a security regression. The original fix was complete. This update is adding the official upstream fix. (BZ#556406)

Users should upgrade to these updated packages, which contain backported patches to correct these issues. The system must be rebooted for this update to take effect.

The remote CentOS system is missing a security update which has been documented in Red Hat advisory RHSA-2010-0076.
IAVA Reference : 2010-A-0001
IAVA Reference : 2010-A-0015

From Red Hat Security Advisory 2010:0076 :

Updated kernel packages that fix multiple security issues and three bugs are now available for Red Hat Enterprise Linux 4.

This update has been rated as having important security impact by the Red Hat Security Response Team.

The kernel packages contain the Linux kernel, the core of any Linux operating system.

This update fixes the following security issues :

* an array index error was found in the gdth driver in the Linux kernel. A local user could send a specially crafted IOCTL request that would cause a denial of service or, possibly, privilege escalation.
(CVE-2009-3080, Important)

* a flaw was found in the collect_rx_frame() function in the HiSax ISDN driver (hfc_usb) in the Linux kernel. An attacker could use this flaw to send a specially crafted HDLC packet that could trigger a buffer out of bounds, possibly resulting in a denial of service.
(CVE-2009-4005, Important)

* permission issues were found in the megaraid_sas driver (for SAS based RAID controllers) in the Linux kernel. The 'dbg_lvl' and 'poll_mode_io' files on the sysfs file system ('/sys/') had world-writable permissions. This could allow local, unprivileged users to change the behavior of the driver. (CVE-2009-3889, CVE-2009-3939, Moderate)

* a buffer overflow flaw was found in the hfs_bnode_read() function in the HFS file system implementation in the Linux kernel. This could lead to a denial of service if a user browsed a specially crafted HFS file system, for example, by running 'ls'. (CVE-2009-4020, Low)

This update also fixes the following bugs :

* if a process was using ptrace() to trace a multi-threaded process, and that multi-threaded process dumped its core, the process performing the trace could hang in wait4(). This issue could be triggered by running 'strace -f' on a multi-threaded process that was dumping its core, resulting in the strace command hanging. (BZ#555869)

* a bug in the ptrace() implementation could have, in some cases, caused ptrace_detach() to create a zombie process if the process being traced was terminated with a SIGKILL signal. (BZ#555869)

* the RHSA-2010:0020 update resolved an issue (CVE-2009-4537) in the Realtek r8169 Ethernet driver. This update implements a better solution for that issue. Note: This is not a security regression. The original fix was complete. This update is adding the official upstream fix. (BZ#556406)

Users should upgrade to these updated packages, which contain backported patches to correct these issues. The system must be rebooted for this update to take effect.

CVE-2009-3889 CVE-2009-3939 kernel: megaraid_sas permissions in sysfs

CVE-2009-3080 kernel: gdth: Prevent negative offsets in ioctl

CVE-2009-4005 kernel: isdn: hfc_usb: fix read buffer overflow

CVE-2009-4020 kernel: hfs buffer overflow

This update fixes the following security issues :

  - an array index error was found in the gdth driver in the     Linux kernel. A local user could send a specially     crafted IOCTL request that would cause a denial of     service or, possibly, privilege escalation.
    (CVE-2009-3080, Important)

  - a flaw was found in the collect_rx_frame() function in     the HiSax ISDN driver (hfc_usb) in the Linux kernel. An     attacker could use this flaw to send a specially crafted     HDLC packet that could trigger a buffer out of bounds,     possibly resulting in a denial of service.
    (CVE-2009-4005, Important)

  - permission issues were found in the megaraid_sas driver     (for SAS based RAID controllers) in the Linux kernel.
    The 'dbg_lvl' and 'poll_mode_io' files on the sysfs file     system ('/sys/') had world-writable permissions. This     could allow local, unprivileged users to change the     behavior of the driver. (CVE-2009-3889, CVE-2009-3939,     Moderate)

  - a buffer overflow flaw was found in the hfs_bnode_read()     function in the HFS file system implementation in the     Linux kernel. This could lead to a denial of service if     a user browsed a specially crafted HFS file system, for     example, by running 'ls'. (CVE-2009-4020, Low)

This update also fixes the following bugs :

  - if a process was using ptrace() to trace a     multi-threaded process, and that multi-threaded process     dumped its core, the process performing the trace could     hang in wait4(). This issue could be triggered by     running 'strace -f' on a multi-threaded process that was     dumping its core, resulting in the strace command     hanging. (BZ#555869)

  - a bug in the ptrace() implementation could have, in some     cases, caused ptrace_detach() to create a zombie process     if the process being traced was terminated with a     SIGKILL signal. (BZ#555869)

  - the kernel-2.6.9-89.0.19.EL update resolved an issue     (CVE-2009-4537) in the Realtek r8169 Ethernet driver.
    This update implements a better solution for that issue.
    Note: This is not a security regression. The original     fix was complete. This update is adding the official     upstream fix. (BZ#556406)

The system must be rebooted for this update to take effect.

This update fixes various security issues and some bugs in the SUSE Linux Enterprise 9 kernel.

  - The collect_rx_frame function in     drivers/isdn/hisax/hfc_usb.c in the Linux kernel allows     attackers to have an unspecified impact via a crafted     HDLC packet that arrives over ISDN and triggers a buffer     under-read. (CVE-2009-4005)

  - Array index error in the gdth_read_event function in     drivers/scsi/gdth.c in the Linux kernel allows local     users to cause a denial of service or possibly gain     privileges via a negative event index in an IOCTL     request. (CVE-2009-3080)

  - Missing CAP_NET_ADMIN checks in the ebtables netfilter     code might have allowed local attackers to modify bridge     firewall settings. (CVE-2010-0007)

  - drivers/net/e1000/e1000_main.c in the e1000 driver in     the Linux kernel handles Ethernet frames that exceed the     MTU by processing certain trailing payload data as if it     were a complete frame, which allows remote attackers to     bypass packet filters via a large packet with a crafted     payload. (CVE-2009-4536)

  - The dbg_lvl file for the megaraid_sas driver in the     Linux kernel has world-writable permissions, which     allows local users to change the (1) behavior and (2)     logging level of the driver by modifying this file.
    (CVE-2009-3889)

  - The z90crypt_unlocked_ioctl function in the z90crypt     driver in the Linux kernel does not perform a capability     check for the Z90QUIESCE operation, which allows local     users to leverage euid 0 privileges to force a driver     outage. (CVE-2009-1883)

  - Memory leak in the appletalk subsystem in the Linux     kernel, when the appletalk and ipddp modules are loaded     but the ipddp'N' device is not found, allows remote     attackers to cause a denial of service (memory     consumption) via IP-DDP datagrams. (CVE-2009-2903)

  - net/1/af_unix.c in the Linux kernel allows local users     to cause a denial of service (system hang) by creating     an abstract-namespace AF_UNIX listening socket,     performing a shutdown operation on this socket, and then     performing a series of connect operations to this     socket. (CVE-2009-3621)

  - The ATI Rage 128 (aka r128) driver in the Linux kernel     does not properly verify Concurrent Command Engine (CCE)     state initialization, which allows local users to cause     a denial of service (NULL pointer dereference and system     crash) or possibly gain privileges via unspecified ioctl     calls. (CVE-2009-3620)

Indications Everyone using the Linux Kernel on x86_64 architecture should update.

Contraindications None.

Problem description

The SUSE Linux Enterprise 11 Kernel was updated to 2.6.27.42 fixing various bugs and security issues.

The following security issues were fixed :

  - A underflow in the e1000 jumbo ethernet frame handling     could be use by link-local remote attackers to crash the     machine or potentially execute code in kernel context.
    This requires the attacker to be able to send Jumbo     Frames to the target machine. (CVE-2009-4536)

  - A underflow in the e1000e jumbo ethernet frame handling     could be use by link-local remote attackers to crash the     machine or potentially execute code in kernel context.
    This requires the attacker to be able to send Jumbo     Frames to the target machine. (CVE-2009-4538)

  - drivers/firewire/ohci.c in the Linux kernel, when     packet-per-buffer mode is used, allows local users to     cause a denial of service (NULL pointer dereference and     system crash) or possibly have unknown other impact via     an unspecified ioctl associated with receiving an ISO     packet that contains zero in the payload-length field.
    (CVE-2009-4138)

  - The ext4_fill_flex_info function in fs/ext4/super.c in     the Linux kernel allows user-assisted remote attackers     to cause a denial of service (divide-by-zero error and     panic) via a malformed ext4 filesystem containing a     super block with a large FLEX_BG group size (aka     s_log_groups_per_flex value). (CVE-2009-4307)

  - The ext4_decode_error function in fs/ext4/super.c in the     ext4 filesystem in the Linux kernel before 2.6.32 allows     user-assisted remote attackers to cause a denial of     service (NULL pointer dereference), and possibly have     unspecified other impact, via a crafted read-only     filesystem that lacks a journal. (CVE-2009-4308)

  - The poll_mode_io file for the megaraid_sas driver in the     Linux kernel has world-writable permissions, which     allows local users to change the I/O mode of the driver     by modifying this file. (CVE-2009-3939)

  - The collect_rx_frame function in     drivers/isdn/hisax/hfc_usb.c in the Linux kernel allows     attackers to have an unspecified impact via a crafted     HDLC packet that arrives over ISDN and triggers a buffer     under-read. (CVE-2009-4005)

  - A negative offset in a ioctl in the GDTH RAID driver was     fixed. (CVE-2009-3080)

  - Stack-based buffer overflow in the hfs subsystem in the     Linux kernel allows remote attackers to have an     unspecified impact via a crafted Hierarchical File     System (HFS) filesystem, related to the hfs_readdir     function in fs/hfs/dir.c. (CVE-2009-4020)

For a complete list of changes, please look at the RPM changelog.

Solution

Please install the updates provided at the location noted below.

Installation notes

This update is provided as a set of RPM packages that can easily be installed onto a running system by using the YaST online update module.

Indications Everyone using the Linux Kernel on s390x architecture should update.

Contraindications None.

Problem description

The SUSE Linux Enterprise 11 Kernel was updated to 2.6.27.42 fixing various bugs and security issues.

The following security issues were fixed :

  - A underflow in the e1000 jumbo ethernet frame handling     could be use by link-local remote attackers to crash the     machine or potentially execute code in kernel context.
    This requires the attacker to be able to send Jumbo     Frames to the target machine. (CVE-2009-4536)

  - A underflow in the e1000e jumbo ethernet frame handling     could be use by link-local remote attackers to crash the     machine or potentially execute code in kernel context.
    This requires the attacker to be able to send Jumbo     Frames to the target machine. (CVE-2009-4538)

  - drivers/firewire/ohci.c in the Linux kernel, when     packet-per-buffer mode is used, allows local users to     cause a denial of service (NULL pointer dereference and     system crash) or possibly have unknown other impact via     an unspecified ioctl associated with receiving an ISO     packet that contains zero in the payload-length field.
    (CVE-2009-4138)

  - The ext4_fill_flex_info function in fs/ext4/super.c in     the Linux kernel allows user-assisted remote attackers     to cause a denial of service (divide-by-zero error and     panic) via a malformed ext4 filesystem containing a     super block with a large FLEX_BG group size (aka     s_log_groups_per_flex value). (CVE-2009-4307)

  - The ext4_decode_error function in fs/ext4/super.c in the     ext4 filesystem in the Linux kernel before 2.6.32 allows     user-assisted remote attackers to cause a denial of     service (NULL pointer dereference), and possibly have     unspecified other impact, via a crafted read-only     filesystem that lacks a journal. (CVE-2009-4308)

  - The poll_mode_io file for the megaraid_sas driver in the     Linux kernel has world-writable permissions, which     allows local users to change the I/O mode of the driver     by modifying this file. (CVE-2009-3939)

  - The collect_rx_frame function in     drivers/isdn/hisax/hfc_usb.c in the Linux kernel allows     attackers to have an unspecified impact via a crafted     HDLC packet that arrives over ISDN and triggers a buffer     under-read. (CVE-2009-4005)

  - A negative offset in a ioctl in the GDTH RAID driver was     fixed. (CVE-2009-3080)

  - Stack-based buffer overflow in the hfs subsystem in the     Linux kernel allows remote attackers to have an     unspecified impact via a crafted Hierarchical File     System (HFS) filesystem, related to the hfs_readdir     function in fs/hfs/dir.c. (CVE-2009-4020)

For a complete list of changes, please look at the RPM changelog.

Solution

Please install the updates provided at the location noted below.

Installation notes

This update is provided as a set of RPM packages that can easily be installed onto a running system by using the YaST online update module.

The openSUSE 11.1 Kernel was updated to 2.6.27.42 fixing various bugs and security issues.

Following security issues were fixed: CVE-2009-4536: A underflow in the e1000 jumbo ethernet frame handling could be use by link-local remote attackers to crash the machine or potentially execute code in kernel context. This requires the attacker to be able to send Jumbo Frames to the target machine.

CVE-2009-4538: A underflow in the e1000e jumbo ethernet frame handling could be use by link-local remote attackers to crash the machine or potentially execute code in kernel context. This requires the attacker to be able to send Jumbo Frames to the target machine.

CVE-2009-4138: drivers/firewire/ohci.c in the Linux kernel, when packet-per-buffer mode is used, allows local users to cause a denial of service (NULL pointer dereference and system crash) or possibly have unknown other impact via an unspecified ioctl associated with receiving an ISO packet that contains zero in the payload-length field.

CVE-2009-4307: The ext4_fill_flex_info function in fs/ext4/super.c in the Linux kernel allows user-assisted remote attackers to cause a denial of service (divide-by-zero error and panic) via a malformed ext4 filesystem containing a super block with a large FLEX_BG group size (aka s_log_groups_per_flex value).

CVE-2009-4308: The ext4_decode_error function in fs/ext4/super.c in the ext4 filesystem in the Linux kernel before 2.6.32 allows user-assisted remote attackers to cause a denial of service (NULL pointer dereference), and possibly have unspecified other impact, via a crafted read-only filesystem that lacks a journal.

CVE-2009-3939: The poll_mode_io file for the megaraid_sas driver in the Linux kernel has world-writable permissions, which allows local users to change the I/O mode of the driver by modifying this file.

CVE-2009-4005: The collect_rx_frame function in drivers/isdn/hisax/hfc_usb.c in the Linux kernel allows attackers to have an unspecified impact via a crafted HDLC packet that arrives over ISDN and triggers a buffer under-read.

CVE-2009-3080: A negative offset in a ioctl in the GDTH RAID driver was fixed.

CVE-2009-4020: Stack-based buffer overflow in the hfs subsystem in the Linux kernel allows remote attackers to have an unspecified impact via a crafted Hierarchical File System (HFS) filesystem, related to the hfs_readdir function in fs/hfs/dir.c.

For a complete list of changes, please look at the RPM changelog.

NOTE: This kernel update marks the final planned kernel security update for the 2.6.18 kernel in the Debian release 'etch'. Although security support for 'etch' officially ended on Feburary 15th, 2010, this update was already in preparation before that date. A final update that includes fixes for these issues in the 2.6.24 kernel is also in preparation and will be released shortly.

Several vulnerabilities have been discovered in the Linux kernel that may lead to a denial of service or privilege escalation. The Common Vulnerabilities and Exposures project identifies the following problems :

  - CVE-2009-3080     Dave Jones reported an issue in the gdth SCSI driver. A     missing check for negative offsets in an ioctl call     could be exploited by local users to create a denial of     service or potentially gain elevated privileges.

  - CVE-2009-3726     Trond Myklebust reported an issue where a malicious NFS     server could cause a denial of service condition on its     clients by returning incorrect attributes during an open     call.

  - CVE-2009-4005     Roel Kluin discovered an issue in the hfc_usb driver, an     ISDN driver for Colognechip HFC-S USB chip. A potential     read overflow exists which may allow remote users to     cause a denial of service condition (oops).

  - CVE-2009-4020     Amerigo Wang discovered an issue in the HFS filesystem     that would allow a denial of service by a local user who     has sufficient privileges to mount a specially crafted     filesystem.

  - CVE-2009-4021     Anana V. Avati discovered an issue in the fuse     subsystem. If the system is sufficiently low on memory,     a local user can cause the kernel to dereference an     invalid pointer resulting in a denial of service (oops)     and potentially an escalation of privileges.

  - CVE-2009-4536     Fabian Yamaguchi reported an issue in the e1000 driver     for Intel gigabit network adapters which allow remote     users to bypass packet filters using specially crafted     ethernet frames.

  - CVE-2010-0007     Florian Westphal reported a lack of capability checking     in the ebtables netfilter subsystem. If the ebtables     module is loaded, local users can add and modify     ebtables rules.

  - CVE-2010-0410     Sebastian Krahmer discovered an issue in the netlink     connector subsystem that permits local users to allocate     large amounts of system memory resulting in a denial of     service (out of memory).

  - CVE-2010-0415     Ramon de Carvalho Valle discovered an issue in the     sys_move_pages interface, limited to amd64, ia64 and     powerpc64 flavors in Debian. Local users can exploit     this issue to cause a denial of service (system crash)     or gain access to sensitive kernel memory.

  - CVE-2010-0622     Jerome Marchand reported an issue in the futex subsystem     that allows a local user to force an invalid futex state     which results in a denial of service (oops).

This update also fixes a regression introduced by a previous security update that caused problems booting on certain s390 systems.

This update fixes various bugs and some security issues in the SUSE Linux Enterprise 10 SP 3 kernel.

The following security issues were fixed: CVE-2009-3939: A sysctl variable of the megaraid_sas driver was worldwriteable, allowing local users to cause a denial of service or potential code execution.

  - The collect_rx_frame function in     drivers/isdn/hisax/hfc_usb.c in the Linux kernel before     2.6.32-rc7 allows attackers to have an unspecified     impact via a crafted HDLC packet that arrives over ISDN     and triggers a buffer under-read. (CVE-2009-4005)

  - A negative offset in a ioctl in the GDTH RAID driver was     fixed. (CVE-2009-3080)

  - The fuse_direct_io function in fs/fuse/file.c in the     fuse subsystem in the Linux kernel might allow attackers     to cause a denial of service (invalid pointer     dereference and OOPS) via vectors possibly related to a     memory-consumption attack. (CVE-2009-4021)

  - Memory leak in the appletalk subsystem in the Linux     kernel when the appletalk and ipddp modules are loaded     but the ipddp'N' device is not found, allows remote     attackers to cause a denial of service (memory     consumption) via IP-DDP datagrams. (CVE-2009-2903)

  - net/1/af_unix.c in the Linux kernel allows local users     to cause a denial of service (system hang) by creating     an abstract-namespace AF_UNIX listening socket,     performing a shutdown operation on this socket, and then     performing a series of connect operations to this     socket. (CVE-2009-3621)

  - The tcf_fill_node function in net/sched/cls_api.c in the     netlink subsystem in the Linux kernel 2.6.x before     2.6.32-rc5, and 2.4.37.6 and earlier, does not     initialize a certain tcm__pad2 structure member, which     might allow local users to obtain sensitive information     from kernel memory via unspecified vectors. NOTE: this     issue existed because of an incomplete fix for     CVE-2005-4881. (CVE-2009-3612 / CVE-2005-4881)

  - The ATI Rage 128 (aka r128) driver in the Linux kernel     does not properly verify Concurrent Command Engine (CCE)     state initialization, which allows local users to cause     a denial of service (NULL pointer dereference and system     crash) or possibly gain privileges via unspecified ioctl     calls. (CVE-2009-3620)

  - The nfs4_proc_lock function in fs/nfs/nfs4proc.c in the     NFSv4 client in the Linux kernel allows remote NFS     servers to cause a denial of service (NULL pointer     dereference and panic) by sending a certain response     containing incorrect file attributes, which trigger     attempted use of an open file that lacks NFSv4 state.
    (CVE-2009-3726)

The rio and sx serial multiport card drivers were disabled via a modprobe blacklist due to severe bugs.

For a full list of changes, please read the RPM changelog.

This update fixes a several security issues and various bugs in the SUSE Linux Enterprise 10 SP 2 kernel.

The following security issues were fixed: CVE-2009-3939: A sysctl variable of the megaraid_sas driver was worldwriteable, allowing local users to cause a denial of service or potential code execution.

  - The collect_rx_frame function in     drivers/isdn/hisax/hfc_usb.c in the Linux kernel before     2.6.32-rc7 allows attackers to have an unspecified     impact via a crafted HDLC packet that arrives over ISDN     and triggers a buffer under-read. (CVE-2009-4005)

  - A negative offset in a ioctl in the GDTH RAID driver was     fixed. (CVE-2009-3080)

  - The fuse_direct_io function in fs/fuse/file.c in the     fuse subsystem in the Linux kernel might allow attackers     to cause a denial of service (invalid pointer     dereference and OOPS) via vectors possibly related to a     memory-consumption attack. (CVE-2009-4021)

  - The dbg_lvl file for the megaraid_sas driver in the     Linux kernel before 2.6.27 has world-writable     permissions, which allows local users to change the (1)     behavior and (2) logging level of the driver by     modifying this file. (CVE-2009-3889)

  - Memory leak in the appletalk subsystem in the Linux     kernel when the appletalk and ipddp modules are loaded     but the ipddp'N' device is not found, allows remote     attackers to cause a denial of service (memory     consumption) via IP-DDP datagrams. (CVE-2009-2903)

  - net/unix/af_unix.c in the Linux kernel allows local     users to cause a denial of service (system hang) by     creating an abstract-namespace AF_UNIX listening socket,     performing a shutdown operation on this socket, and then     performing a series of connect operations to this     socket. (CVE-2009-3621)

  - The tcf_fill_node function in net/sched/cls_api.c in the     netlink subsystem in the Linux kernel 2.6.x before     2.6.32-rc5, and 2.4.37.6 and earlier, does not     initialize a certain tcm__pad2 structure member, which     might allow local users to obtain sensitive information     from kernel memory via unspecified vectors. NOTE: this     issue existed because of an incomplete fix for     CVE-2005-4881. (CVE-2009-3612 / CVE-2005-4881)

  - The ATI Rage 128 (aka r128) driver in the Linux kernel     does not properly verify Concurrent Command Engine (CCE)     state initialization, which allows local users to cause     a denial of service (NULL pointer dereference and system     crash) or possibly gain privileges via unspecified ioctl     calls. (CVE-2009-3620)

  - The nfs4_proc_lock function in fs/nfs/nfs4proc.c in the     NFSv4 client in the Linux kernel allows remote NFS     servers to cause a denial of service (NULL pointer     dereference and panic) by sending a certain response     containing incorrect file attributes, which trigger     attempted use of an open file that lacks NFSv4 state.
    (CVE-2009-3726)

  - The swiotlb functionality in the r8169 driver in     drivers/net/r8169.c in the Linux kernel allows remote     attackers to cause a denial of service (IOMMU space     exhaustion and system crash) by using jumbo frames for a     large amount of network traffic, as demonstrated by a     flood ping. (CVE-2009-3613)

The rio and sx serial multiport card drivers were disabled via a modprobe blacklist due to severe bugs.

For a full list of changes, please read the RPM changelog.

NOTE: This kernel update marks the final planned kernel security update for the 2.6.24 kernel in the Debian release 'etch'. Although security support for 'etch' officially ended on Feburary 15th, 2010, this update was already in preparation before that date.

Several vulnerabilities have been discovered in the Linux kernel that may lead to a denial of service, sensitive memory leak or privilege escalation. The Common Vulnerabilities and Exposures project identifies the following problems :

  - CVE-2009-2691     Steve Beattie and Kees Cook reported an information leak     in the maps and smaps files available under /proc. Local     users may be able to read this data for setuid processes     while the ELF binary is being loaded.

  - CVE-2009-2695     Eric Paris provided several fixes to increase the     protection provided by the mmap_min_addr tunable against     NULL pointer dereference vulnerabilities.

  - CVE-2009-3080     Dave Jones reported an issue in the gdth SCSI driver. A     missing check for negative offsets in an ioctl call     could be exploited by local users to create a denial of     service or potentially gain elevated privileges.

  - CVE-2009-3726     Trond Myklebust reported an issue where a malicious NFS     server could cause a denial of service condition on its     clients by returning incorrect attributes during an open     call.

  - CVE-2009-3889     Joe Malicki discovered an issue in the megaraid_sas     driver. Insufficient permissions on the sysfs dbg_lvl     interface allow local users to modify the debug logging     behavior.

  - CVE-2009-4005     Roel Kluin discovered an issue in the hfc_usb driver, an     ISDN driver for Colognechip HFC-S USB chip. A potential     read overflow exists which may allow remote users to     cause a denial of service condition (oops).

  - CVE-2009-4020     Amerigo Wang discovered an issue in the HFS filesystem     that would allow a denial of service by a local user who     has sufficient privileges to mount a specially crafted     filesystem.

  - CVE-2009-4021     Anana V. Avati discovered an issue in the fuse     subsystem. If the system is sufficiently low on memory,     a local user can cause the kernel to dereference an     invalid pointer resulting in a denial of service (oops)     and potentially an escalation of privileges.

  - CVE-2009-4138     Jay Fenlason discovered an issue in the firewire stack     that allows local users to cause a denial of service     (oops or crash) by making a specially crafted ioctl     call.

  - CVE-2009-4308     Ted Ts'o discovered an issue in the ext4 filesystem that     allows local users to cause a denial of service (NULL     pointer dereference). For this to be exploitable, the     local user must have sufficient privileges to mount a     filesystem.

  - CVE-2009-4536 CVE-2009-4538     Fabian Yamaguchi reported issues in the e1000 and e1000e     drivers for Intel gigabit network adapters which allow     remote users to bypass packet filters using specially     crafted Ethernet frames.

  - CVE-2010-0003     Andi Kleen reported a defect which allows local users to     gain read access to memory reachable by the kernel when     the print-fatal-signals option is enabled. This option     is disabled by default.

  - CVE-2010-0007     Florian Westphal reported a lack of capability checking     in the ebtables netfilter subsystem. If the ebtables     module is loaded, local users can add and modify     ebtables rules.

  - CVE-2010-0291     Al Viro reported several issues with the mmap/mremap     system calls that allow local users to cause a denial of     service (system panic) or obtain elevated privileges.

  - CVE-2010-0410     Sebastian Krahmer discovered an issue in the netlink     connector subsystem that permits local users to allocate     large amounts of system memory resulting in a denial of     service (out of memory).

  - CVE-2010-0415     Ramon de Carvalho Valle discovered an issue in the     sys_move_pages interface, limited to amd64, ia64 and     powerpc64 flavors in Debian. Local users can exploit     this issue to cause a denial of service (system crash)     or gain access to sensitive kernel memory.

  - CVE-2010-0622     Jerome Marchand reported an issue in the futex subsystem     that allows a local user to force an invalid futex state     which results in a denial of service (oops).

It was discovered that the AX.25 network subsystem did not correctly check integer signedness in certain setsockopt calls. A local attacker could exploit this to crash the system, leading to a denial of service. Ubuntu 9.10 was not affected. (CVE-2009-2909)

Jan Beulich discovered that the kernel could leak register contents to 32-bit processes that were switched to 64-bit mode. A local attacker could run a specially crafted binary to read register values from an earlier process, leading to a loss of privacy. (CVE-2009-2910)

Dave Jones discovered that the gdth SCSI driver did not correctly validate array indexes in certain ioctl calls. A local attacker could exploit this to crash the system or gain elevated privileges.
(CVE-2009-3080)

Eric Dumazet and Jiri Pirko discovered that the TC and CLS subsystems would leak kernel memory via uninitialized structure members. A local attacker could exploit this to read several bytes of kernel memory, leading to a loss of privacy. (CVE-2009-3228, CVE-2009-3612)

Earl Chew discovered race conditions in pipe handling. A local attacker could exploit anonymous pipes via /proc/*/fd/ and crash the system or gain root privileges. (CVE-2009-3547)

Dave Jones and Francois Romieu discovered that the r8169 network driver could be made to leak kernel memory. A remote attacker could send a large number of jumbo frames until the system memory was exhausted, leading to a denial of service. Ubuntu 9.10 was not affected. (CVE-2009-3613).

Ben Hutchings discovered that the ATI Rage 128 video driver did not correctly validate initialization states. A local attacker could make specially crafted ioctl calls to crash the system or gain root privileges. (CVE-2009-3620)

Tomoki Sekiyama discovered that Unix sockets did not correctly verify namespaces. A local attacker could exploit this to cause a system hang, leading to a denial of service. (CVE-2009-3621)

J. Bruce Fields discovered that NFSv4 did not correctly use the credential cache. A local attacker using a mount with AUTH_NULL authentication could exploit this to crash the system or gain root privileges. Only Ubuntu 9.10 was affected. (CVE-2009-3623)

Alexander Zangerl discovered that the kernel keyring did not correctly reference count. A local attacker could issue a series of specially crafted keyring calls to crash the system or gain root privileges.
Only Ubuntu 9.10 was affected. (CVE-2009-3624)

David Wagner discovered that KVM did not correctly bounds-check CPUID entries. A local attacker could exploit this to crash the system or possibly gain elevated privileges. Ubuntu 6.06 and 9.10 were not affected. (CVE-2009-3638)

Avi Kivity discovered that KVM did not correctly check privileges when accessing debug registers. A local attacker could exploit this to crash a host system from within a guest system, leading to a denial of service. Ubuntu 6.06 and 9.10 were not affected. (CVE-2009-3722)

Philip Reisner discovered that the connector layer for uvesafb, pohmelfs, dst, and dm did not correctly check capabilties. A local attacker could exploit this to crash the system or gain elevated privileges. Ubuntu 6.06 was not affected. (CVE-2009-3725)

Trond Myklebust discovered that NFSv4 clients did not robustly verify attributes. A malicious remote NFSv4 server could exploit this to crash a client or gain root privileges. Ubuntu 9.10 was not affected.
(CVE-2009-3726)

Robin Getz discovered that NOMMU systems did not correctly validate NULL pointers in do_mmap_pgoff calls. A local attacker could attempt to allocate large amounts of memory to crash the system, leading to a denial of service. Only Ubuntu 6.06 and 9.10 were affected.
(CVE-2009-3888)

Joseph Malicki discovered that the MegaRAID SAS driver had world-writable option files. A local attacker could exploit these to disrupt the behavior of the controller, leading to a denial of service. (CVE-2009-3889, CVE-2009-3939)

Roel Kluin discovered that the Hisax ISDN driver did not correctly check the size of packets. A remote attacker could send specially crafted packets to cause a system crash, leading to a denial of service. (CVE-2009-4005)

Lennert Buytenhek discovered that certain 802.11 states were not handled correctly. A physically-proximate remote attacker could send specially crafted wireless traffic that would crash the system, leading to a denial of service. Only Ubuntu 9.10 was affected.
(CVE-2009-4026, CVE-2009-4027).

Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The Linux kernel for openSUSE 11.2 was updated to 2.6.31.8 to fix the following bugs and security issues :

  - A file overwrite issue on the ext4 filesystem could be     used by local attackers that have write access to a     filesystem to change/overwrite files of other users,     including root. (CVE-2009-4131)

  - A remote denial of service by sending overly long     packets could be used by remote attackers to crash a     machine. (CVE-2009-1298)

  - The mac80211 subsystem in the Linux kernel allows remote     attackers to cause a denial of service (panic) via a     crafted Delete Block ACK (aka DELBA) packet, related to     an erroneous 'code shuffling patch.' (CVE-2009-4026)

  - Race condition in the mac80211 subsystem in the Linux     kernel allows remote attackers to cause a denial of     service (system crash) via a Delete Block ACK (aka     DELBA) packet that triggers a certain state change in     the absence of an aggregation session. (CVE-2009-4027)

  - The poll_mode_io file for the megaraid_sas driver in     the Linux kernel has world-writable permissions, which     allows local users to change the I/O mode of the driver     by modifying this file. (CVE-2009-3939)

  - The collect_rx_frame function in     drivers/isdn/hisax/hfc_usb.c in the Linux kernel allows     attackers to have an unspecified impact via a crafted     HDLC packet that arrives over ISDN and triggers a buffer     under-read. This requires the attacker to access the     machine on ISDN protocol level. (CVE-2009-4005)

  - Array index error in the gdth_read_event function in     drivers/scsi/gdth.c in the Linux kernel allows local     users to cause a denial of service or possibly gain     privileges via a negative event index in an IOCTL     request. (CVE-2009-3080)

  - The get_instantiation_keyring function in     security/keys/keyctl.c in the KEYS subsystem in the     Linux kernel does not properly maintain the reference     count of a keyring, which allows local users to gain     privileges or cause a denial of service (OOPS) via     vectors involving calls to this function without     specifying a keyring by ID, as demonstrated by a series     of keyctl request2 and keyctl list commands.
    (CVE-2009-3624)

  - The fuse_direct_io function in fs/fuse/file.c in the     fuse subsystem in the Linux kernel might allow attackers     to cause a denial of service (invalid pointer     dereference and OOPS) via vectors possibly related to a     memory-consumption attack. (CVE-2009-4021)

  - Multiple race conditions in fs/pipe.c in the Linux     kernel allow local users to cause a denial of service     (NULL pointer dereference and system crash) or gain     privileges by attempting to open an anonymous pipe via a     /proc/*/fd/ pathname. As openSUSE 11.2 by default sets     mmap_min_addr protection, this issue will just Oops the     kernel and not be able to execute code. (CVE-2009-3547)

  - net/unix/af_unix.c in the Linux kernel allows local     users to cause a denial of service (system hang) by     creating an abstract-namespace AF_UNIX listening socket,     performing a shutdown operation on this socket, and then     performing a series of connect operations to this     socket. (CVE-2009-3621)

  - drivers/firewire/ohci.c in the Linux kernel when     packet-per-buffer mode is used, allows local users to     cause a denial of service (NULL pointer dereference and     system crash) or possibly have unknown other impact via     an unspecified ioctl associated with receiving an ISO     packet that contains zero in the payload-length field.
    (CVE-2009-4138)

  - The ext4_decode_error function in fs/ext4/super.c in     the ext4 filesystem in the Linux kernel allows     user-assisted remote attackers to cause a denial of     service (NULL pointer dereference), and possibly have     unspecified other impact, via a crafted read-only     filesystem that lacks a journal. (CVE-2009-4308)

  - The ext4_fill_flex_info function in fs/ext4/super.c in     the Linux kernel allows user-assisted remote attackers     to cause a denial of service (divide-by-zero error and     panic) via a malformed ext4 filesystem containing a     super block with a large FLEX_BG group size (aka     s_log_groups_per_flex value). (CVE-2009-4307)

  - Unspecified vulnerability in the EXT4_IOC_MOVE_EXT (aka     move extents) ioctl implementation in the ext4     filesystem in the Linux kernel allows local users to     cause a denial of service (filesystem corruption) via     unknown vectors, a different vulnerability than     CVE-2009-4131. (CVE-2009-4306)

  - The EXT4_IOC_MOVE_EXT (aka move extents) ioctl     implementation in the ext4 filesystem in the Linux     kernel allows local users to overwrite arbitrary files     via a crafted request, related to insufficient checks     for file permissions. This can lead to privilege     escalations. (CVE-2009-4131)

  - The rt2870 and rt2860 drivers were refreshed to the     level they are in the Linux 2.6.32 kernel, bringing new     device support and new functionality.

ID	Name	Product	Family	Published	Updated	Severity
44408	Mandriva Linux Security Advisory : kernel (MDVSA-2010:034)	Nessus	Mandriva Local Security Checks	2010/02/09	2019/08/02	high
44356	Mandriva Linux Security Advisory : kernel (MDVSA-2010:030)	Nessus	Mandriva Local Security Checks	2010/02/02	2019/08/02	high
43125	Fedora 10 : kernel-2.6.27.41-170.2.117.fc10 (2009-13098)	Nessus	Fedora Local Security Checks	2009/12/14	2019/08/02	high
44395	CentOS 4 : kernel (CESA-2010:0076)	Nessus	CentOS Local Security Checks	2010/02/05	2019/10/25	high
44386	RHEL 4 : kernel (RHSA-2010:0076)	Nessus	Red Hat Local Security Checks	2010/02/03	2019/10/25	high
801486	CentOS RHSA-2010-0076 Security Check	Log Correlation Engine	Generic			high
67992	Oracle Linux 4 : kernel (ELSA-2010-0076)	Nessus	Oracle Linux Local Security Checks	2013/07/12	2019/10/25	high
60728	Scientific Linux Security Update : kernel on SL4.x i386/x86_64	Nessus	Scientific Linux Local Security Checks	2012/08/01	2019/10/25	high
44654	SuSE9 Security Update : the Linux kernel (YOU Patch Number 12578)	Nessus	SuSE Local Security Checks	2010/02/18	2019/10/25	high
44037	SuSE 11 Security Update : Linux kernel (SAT Patch Numbers 1754 / 1760)	Nessus	SuSE Local Security Checks	2010/01/15	2019/10/25	critical
52685	SuSE 11 Security Update : Linux kernel (SAT Patch Number 1753)	Nessus	SuSE Local Security Checks	2011/03/17	2019/10/25	critical
44034	openSUSE Security Update : kernel (kernel-1749)	Nessus	SuSE Local Security Checks	2010/01/15	2019/10/25	critical
44867	Debian DSA-2003-1 : linux-2.6 - privilege escalation/denial of service	Nessus	Debian Local Security Checks	2010/02/24	2019/08/02	high
59142	SuSE 10 Security Update : Linux Kernel (x86_64) (ZYPP Patch Number 6697)	Nessus	SuSE Local Security Checks	2012/05/17	2019/10/25	high
59143	SuSE 10 Security Update : the Linux Kernel (x86_64) (ZYPP Patch Number 6730)	Nessus	SuSE Local Security Checks	2012/05/17	2019/10/25	high
43398	SuSE 10 Security Update : the Linux Kernel (i386) (ZYPP Patch Number 6726)	Nessus	SuSE Local Security Checks	2009/12/23	2019/10/25	high
49868	SuSE 10 Security Update : Linux Kernel (x86) (ZYPP Patch Number 6694)	Nessus	SuSE Local Security Checks	2010/10/11	2019/10/25	high
44951	Debian DSA-2005-1 : linux-2.6.24 - privilege escalation/denial of service/sensitive memory leak	Nessus	Debian Local Security Checks	2010/03/02	2019/08/02	critical
43026	Ubuntu 6.06 LTS / 8.04 LTS / 8.10 / 9.04 / 9.10 : linux, linux-source-2.6.15 vulnerabilities (USN-864-1)	Nessus	Ubuntu Local Security Checks	2009/12/07	2019/08/02	high
43631	SuSE 11.2 Security Update: kernel (2009-12-18)	Nessus	SuSE Local Security Checks	2010/01/05	2019/10/25	high

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