The Linux kernel before 2.6.25.10 does not properly perform tty operations, which allows local users to cause a denial of service (system crash) or possibly gain privileges via vectors involving NULL pointer dereference of function pointers in (1) hamradio/6pack.c, (2) hamradio/mkiss.c, (3) irda/irtty-sir.c, (4) ppp_async.c, (5) ppp_synctty.c, (6) slip.c, (7) wan/x25_asy.c, and (8) wireless/strip.c in drivers/net/.

The remote VMware ESX / ESXi host is missing a security-related patch.
It is, therefore, affected by multiple vulnerabilities, including remote code execution vulnerabilities, in the following components :

  - ISC DHCP dhclient
  - Integrated Services Digital Network (ISDN) subsystem
  - Java Runtime Environment (JRE)
  - Java SE Development Kit (JDK)
  - Java SE Web Start
  - Linux kernel
  - Linux kernel 32-bit and 64-bit emulation
  - Linux kernel Simple Internet Transition INET6
  - Linux kernel tty
  - Linux kernel virtual file system (VFS)
  - Red Hat dhcpd init script for DHCP
  - SBNI WAN driver

The remote OracleVM system is missing necessary patches to address critical security updates :

  - fix utrace dead_engine ops race

  - fix ptrace_attach leak

  - CVE-2007-5093: kernel PWC driver DoS

  - CVE-2007-6282: IPSec ESP kernel panics

  - CVE-2007-6712: kernel: infinite loop in highres timers     (kernel hang)

  - CVE-2008-1615: kernel: ptrace: Unprivileged crash on     x86_64 %cs corruption

  - CVE-2008-1294: kernel: setrlimit(RLIMIT_CPUINFO) with     zero value doesn't inherit properly across children

  - CVE-2008-2136: kernel: sit memory leak

  - CVE-2008-2812: kernel: NULL ptr dereference in multiple     network drivers due to missing checks in tty code

  - restore     linux-2.6-x86-clear-df-flag-for-signal-handlers.patch

  - restore linux-2.6-utrace.patch /     linux-2.6-xen-utrace.patch

  - Kernel security erratas for OVM 2.1.2 from bz#5932 :

  - CVE-2007-6063: isdn: fix possible isdn_net buffer     overflows

  - CVE-2007-3104 Null pointer to an inode in a dentry can     cause an oops in sysfs_readdir

  - CVE-2008-0598: write system call vulnerability

  - CVE-2008-1375: kernel: race condition in dnotify

  - CVE-2008-0001: kernel: filesystem corruption by     unprivileged user via directory truncation

  - CVE-2008-2358: dccp: sanity check feature length

  - CVE-2007-5938: NULL dereference in iwl driver

  - RHSA-2008:0508: kernel: [x86_64] The string instruction     version didn't zero the output on exception.

  - kernel: clear df flag for signal handlers

  - fs: missing dput in do_lookup error leaks dentries

  - sysfs: fix condition check in sysfs_drop_dentry

  - sysfs: fix race condition around sd->s_dentry

  - ieee80211: off-by-two integer underflow

From Red Hat Security Advisory 2008:0973 :

Updated kernel packages that resolve several security issues and fix various bugs are now available for Red Hat Enterprise Linux 3.

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 addresses the following security issues :

* Tavis Ormandy discovered a deficiency in the Linux kernel 32-bit and 64-bit emulation. This could allow a local, unprivileged user to prepare and run a specially crafted binary which would use this deficiency to leak uninitialized and potentially sensitive data.
(CVE-2008-0598, Important)

* a possible kernel memory leak was found in the Linux kernel Simple Internet Transition (SIT) INET6 implementation. This could allow a local, unprivileged user to cause a denial of service. (CVE-2008-2136, Important)

* missing capability checks were found in the SBNI WAN driver which could allow a local user to bypass intended capability restrictions.
(CVE-2008-3525, Important)

* the do_truncate() and generic_file_splice_write() functions did not clear the setuid and setgid bits. This could allow a local, unprivileged user to obtain access to privileged information.
(CVE-2008-4210, Important)

* a buffer overflow flaw was found in Integrated Services Digital Network (ISDN) subsystem. A local, unprivileged user could use this flaw to cause a denial of service. (CVE-2007-6063, Moderate)

* multiple NULL pointer dereferences were found in various Linux kernel network drivers. These drivers were missing checks for terminal validity, which could allow privilege escalation. (CVE-2008-2812, Moderate)

* a deficiency was found in the Linux kernel virtual filesystem (VFS) implementation. This could allow a local, unprivileged user to attempt file creation within deleted directories, possibly causing a denial of service. (CVE-2008-3275, Moderate)

This update also fixes the following bugs :

* the incorrect kunmap function was used in nfs_xdr_readlinkres.
kunmap() was used where kunmap_atomic() should have been. As a consequence, if an NFSv2 or NFSv3 server exported a volume containing a symlink which included a path equal to or longer than the local system's PATH_MAX, accessing the link caused a kernel oops. This has been corrected in this update.

* mptctl_gettargetinfo did not check if pIoc3 was NULL before using it as a pointer. This caused a kernel panic in mptctl_gettargetinfo in some circumstances. A check has been added which prevents this.

* lost tick compensation code in the timer interrupt routine triggered without apparent cause. When running as a fully-virtualized client, this spurious triggering caused the 64-bit version of Red Hat Enterprise Linux 3 to present highly inaccurate times. With this update the lost tick compensation code is turned off when the operating system is running as a fully-virtualized client under Xen or VMware(r).

All Red Hat Enterprise Linux 3 users should install this updated kernel which addresses these vulnerabilities and fixes these bugs.

From Red Hat Security Advisory 2008:0612 :

Updated kernel packages that fix various security issues and several bugs are now available for Red Hat Enterprise Linux 5.

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.

These updated packages fix the following security issues :

* a possible kernel memory leak was found in the Linux kernel Simple Internet Transition (SIT) INET6 implementation. This could allow a local unprivileged user to cause a denial of service. (CVE-2008-2136, Important)

* a flaw was found in the Linux kernel setrlimit system call, when setting RLIMIT_CPU to a certain value. This could allow a local unprivileged user to bypass the CPU time limit. (CVE-2008-1294, Moderate)

* multiple NULL pointer dereferences were found in various Linux kernel network drivers. These drivers were missing checks for terminal validity, which could allow privilege escalation. (CVE-2008-2812, Moderate)

These updated packages fix the following bugs :

* the GNU libc stub resolver is a minimal resolver that works with Domain Name System (DNS) servers to satisfy requests from applications for names. The GNU libc stub resolver did not specify a source UDP port, and therefore used predictable port numbers. This could have made DNS spoofing attacks easier.

The Linux kernel has been updated to implement random UDP source ports where none are specified by an application. This allows applications, such as those using the GNU libc stub resolver, to use random UDP source ports, helping to make DNS spoofing attacks harder.

* when using certain hardware, a bug in UART_BUG_TXEN may have caused incorrect hardware detection, causing data flow to '/dev/ttyS1' to hang.

* a 50-75% drop in NFS server rewrite performance, compared to Red Hat Enterprise Linux 4.6, has been resolved.

* due a bug in the fast userspace mutex code, while one thread fetched a pointer, another thread may have removed it, causing the first thread to fetch the wrong pointer, possibly causing a system crash.

* on certain Hitachi hardware, removing the 'uhci_hcd' module caused a kernel oops, and the following error :

BUG: warning at arch/ia64/kernel/iosapic.c:1001/iosapic_unregister_intr()

Even after the 'uhci_hcd' module was reloaded, there was no access to USB devices. As well, on systems that have legacy interrupts, 'acpi_unregister_gsi' incorrectly called 'iosapci_unregister_intr()', causing warning messages to be logged.

* when a page was mapped with mmap(), and 'PROT_WRITE' was the only 'prot' argument, the first read of that page caused a segmentation fault. If the page was read after it was written to, no fault occurred. This was incompatible with the Red Hat Enterprise Linux 4 behavior.

* due to a NULL pointer dereference in powernowk8_init(), a panic may have occurred.

* certain error conditions handled by the bonding sysfs interface could have left rtnl_lock() unbalanced, either by locking and returning without unlocking, or by unlocking when it did not lock, possibly causing a 'kernel: RTNL: assertion failed at net/core/fib_rules.c' error.

* the kernel currently expects a maximum of six Machine Check Exception (MCE) banks to be exposed by a CPU. Certain CPUs have 7 or more, which may have caused the MCE to be incorrectly reported.

* a race condition in UNIX domain sockets may have caused recv() to return zero. For clusters, this may have caused unexpected failovers.

* msgrcv() frequently returned an incorrect 'ERESTARTNOHAND (514)' error number.

* on certain Intel Itanium-based systems, when kdump was configured to halt the system after a dump operation, after the 'System halted.' output, the kernel continued to output endless 'soft lockup' messages.

Red Hat Enterprise Linux 5 users are advised to upgrade to these updated packages, which contain backported patches to resolve these issues.

This update addresses the following security issues :

  - Tavis Ormandy discovered a deficiency in the Linux     kernel 32-bit and 64-bit emulation. This could allow a     local, unprivileged user to prepare and run a specially     crafted binary which would use this deficiency to leak     uninitialized and potentially sensitive data.
    (CVE-2008-0598, Important)

  - a possible kernel memory leak was found in the Linux     kernel Simple Internet Transition (SIT) INET6     implementation. This could allow a local, unprivileged     user to cause a denial of service. (CVE-2008-2136,     Important)

  - missing capability checks were found in the SBNI WAN     driver which could allow a local user to bypass intended     capability restrictions. (CVE-2008-3525, Important)

  - the do_truncate() and generic_file_splice_write()     functions did not clear the setuid and setgid bits. This     could allow a local, unprivileged user to obtain access     to privileged information. (CVE-2008-4210, Important)

  - a buffer overflow flaw was found in Integrated Services     Digital Network (ISDN) subsystem. A local, unprivileged     user could use this flaw to cause a denial of service.
    (CVE-2007-6063, Moderate)

  - multiple NULL pointer dereferences were found in various     Linux kernel network drivers. These drivers were missing     checks for terminal validity, which could allow     privilege escalation. (CVE-2008-2812, Moderate)

  - a deficiency was found in the Linux kernel virtual     filesystem (VFS) implementation. This could allow a     local, unprivileged user to attempt file creation within     deleted directories, possibly causing a denial of     service. (CVE-2008-3275, Moderate)

This update also fixes the following bugs :

  - the incorrect kunmap function was used in     nfs_xdr_readlinkres. kunmap() was used where     kunmap_atomic() should have been. As a consequence, if     an NFSv2 or NFSv3 server exported a volume containing a     symlink which included a path equal to or longer than     the local system's PATH_MAX, accessing the link caused a     kernel oops. This has been corrected in this update.

  - mptctl_gettargetinfo did not check if pIoc3 was NULL     before using it as a pointer. This caused a kernel panic     in mptctl_gettargetinfo in some circumstances. A check     has been added which prevents this.

  - lost tick compensation code in the timer interrupt     routine triggered without apparent cause. When running     as a fully-virtualized client, this spurious triggering     caused the 64-bit version of Red Hat Enterprise Linux 3     to present highly inaccurate times. With this update the     lost tick compensation code is turned off when the     operating system is running as a fully-virtualized     client under Xen or VMware&reg;.

These updated packages fix the following security issues :

  - a possible kernel memory leak was found in the Linux     kernel Simple Internet Transition (SIT) INET6     implementation. This could allow a local unprivileged     user to cause a denial of service. (CVE-2008-2136,     Important)

  - a flaw was found in the Linux kernel setrlimit system     call, when setting RLIMIT_CPU to a certain value. This     could allow a local unprivileged user to bypass the CPU     time limit. (CVE-2008-1294, Moderate)

  - multiple NULL pointer dereferences were found in various     Linux kernel network drivers. These drivers were missing     checks for terminal validity, which could allow     privilege escalation. (CVE-2008-2812, Moderate)

These updated packages fix the following bugs :

  - the GNU libc stub resolver is a minimal resolver that     works with Domain Name System (DNS) servers to satisfy     requests from applications for names. The GNU libc stub     resolver did not specify a source UDP port, and     therefore used predictable port numbers. This could have     made DNS spoofing attacks easier.

The Linux kernel has been updated to implement random UDP source ports where none are specified by an application. This allows applications, such as those using the GNU libc stub resolver, to use random UDP source ports, helping to make DNS spoofing attacks harder.

  - when using certain hardware, a bug in UART_BUG_TXEN may     have caused incorrect hardware detection, causing data     flow to '/dev/ttyS1' to hang.

  - a 50-75% drop in NFS server rewrite performance,     compared to Red Hat Enterprise Linux 4.6, has been     resolved.

  - due a bug in the fast userspace mutex code, while one     thread fetched a pointer, another thread may have     removed it, causing the first thread to fetch the wrong     pointer, possibly causing a system crash.

  - on certain Hitachi hardware, removing the 'uhci_hcd'     module caused a kernel oops, and the following error :

BUG: warning at arch/ia64/kernel/iosapic.c:1001/iosapic_unregister_intr()

Even after the 'uhci_hcd' module was reloaded, there was no access to USB devices. As well, on systems that have legacy interrupts, 'acpi_unregister_gsi' incorrectly called 'iosapci_unregister_intr()', causing warning messages to be logged.

  - when a page was mapped with mmap(), and 'PROT_WRITE' was     the only 'prot' argument, the first read of that page     caused a segmentation fault. If the page was read after     it was written to, no fault occurred. This was     incompatible with the Red Hat Enterprise Linux 4     behavior.

  - due to a NULL pointer dereference in powernowk8_init(),     a panic may have occurred.

  - certain error conditions handled by the bonding sysfs     interface could have left rtnl_lock() unbalanced, either     by locking and returning without unlocking, or by     unlocking when it did not lock, possibly causing a     'kernel: RTNL: assertion failed at net/core/fib_rules.c'     error.

  - the kernel currently expects a maximum of six Machine     Check Exception (MCE) banks to be exposed by a CPU.
    Certain CPUs have 7 or more, which may have caused the     MCE to be incorrectly reported.

  - a race condition in UNIX domain sockets may have caused     recv() to return zero. For clusters, this may have     caused unexpected failovers.

  - msgrcv() frequently returned an incorrect     'ERESTARTNOHAND (514)' error number.

  - on certain Intel Itanium-based systems, when kdump was     configured to halt the system after a dump operation,     after the 'System halted.' output, the kernel continued     to output endless 'soft lockup' messages.

This update of the SUSE Linux Enterprise 10 Service Pack 1 kernel contains lots of bugfixes and several security fixes :

  - Added missing capability checks in sbni_ioctl().
    (CVE-2008-3525)

  - On AMD64 some string operations could leak kernel     information into userspace. (CVE-2008-0598)

  - Added range checking in ASN.1 handling for the CIFS and     SNMP NAT netfilter modules. (CVE-2008-1673)

  - Fixed range checking in the snd_seq OSS ioctl, which     could be used to leak information from the kernel.
    (CVE-2008-3272)

  - Fixed a memory leak when looking up deleted directories     which could be used to run the system out of memory.
    (CVE-2008-3275)

  - The do_change_type function in fs/namespace.c did not     verify that the caller has the CAP_SYS_ADMIN capability,     which allows local users to gain privileges or cause a     denial of service by modifying the properties of a     mountpoint. (CVE-2008-2931)

  - Various NULL ptr checks have been added to the tty ops     functions, which might have been used by local attackers     to execute code. We think that this affects only devices     openable by root, so the impact is limited.
    (CVE-2008-2812)

This is a respin of the previous kernel update, which got retracted due to an IDE-CDROM regression, where any IDE CDROM access would hang or crash the system. Only this problem was fixed additionally.

This kernel update fixes the following security problems :

  - On x86_64 a denial of service attack could be used by     local attackers to immediately panic / crash the     machine. (CVE-2008-1615)

  - Fixed a SMP ordering problem in fcntl_setlk could     potentially allow local attackers to execute code by     timing file locking. (CVE-2008-1669)

  - Fixed a resource starvation problem in the handling of     ZERO mmap pages. (CVE-2008-2372)

  - The asn1 implementation in (a) the Linux kernel, as used     in the cifs and ip_nat_snmp_basic modules does not     properly validate length values during decoding of ASN.1     BER data, which allows remote attackers to cause a     denial of service (crash) or execute arbitrary code via     (1) a length greater than the working buffer, which can     lead to an unspecified overflow; (2) an oid length of     zero, which can lead to an off-by-one error; or (3) an     indefinite length for a primitive encoding.
    (CVE-2008-1673)

  - Various tty / serial devices did not check     functionpointers for NULL before calling them, leading     to potential crashes or code execution. The devices     affected are usually only accessible by the root user     though. (CVE-2008-2812)

  - A missing permission check in mount changing was added     which could have been used by local attackers to change     the mountdirectory. (CVE-2008-2931)

Additionally a very large number of bugs was fixed. Details can be found in the RPM changelog of the included packages.

OCFS2 has been upgraded to the 1.4.1 release :

  - Endian fixes

  - Use slab caches for DLM objects

  - Export DLM state info to debugfs

  - Avoid ENOSPC in rare conditions when free inodes are     reserved by other nodes

  - Error handling fix in ocfs2_start_walk_page_trans()

  - Cleanup lockres printing

  - Allow merging of extents

  - Fix to allow changing permissions of symlinks

  - Merged local fixes upstream (no code change)

Updated kernel packages that fix various security issues and several bugs are now available for Red Hat Enterprise Linux 5.

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.

These updated packages fix the following security issues :

* a possible kernel memory leak was found in the Linux kernel Simple Internet Transition (SIT) INET6 implementation. This could allow a local unprivileged user to cause a denial of service. (CVE-2008-2136, Important)

* a flaw was found in the Linux kernel setrlimit system call, when setting RLIMIT_CPU to a certain value. This could allow a local unprivileged user to bypass the CPU time limit. (CVE-2008-1294, Moderate)

* multiple NULL pointer dereferences were found in various Linux kernel network drivers. These drivers were missing checks for terminal validity, which could allow privilege escalation. (CVE-2008-2812, Moderate)

These updated packages fix the following bugs :

* the GNU libc stub resolver is a minimal resolver that works with Domain Name System (DNS) servers to satisfy requests from applications for names. The GNU libc stub resolver did not specify a source UDP port, and therefore used predictable port numbers. This could have made DNS spoofing attacks easier.

The Linux kernel has been updated to implement random UDP source ports where none are specified by an application. This allows applications, such as those using the GNU libc stub resolver, to use random UDP source ports, helping to make DNS spoofing attacks harder.

* when using certain hardware, a bug in UART_BUG_TXEN may have caused incorrect hardware detection, causing data flow to '/dev/ttyS1' to hang.

* a 50-75% drop in NFS server rewrite performance, compared to Red Hat Enterprise Linux 4.6, has been resolved.

* due a bug in the fast userspace mutex code, while one thread fetched a pointer, another thread may have removed it, causing the first thread to fetch the wrong pointer, possibly causing a system crash.

* on certain Hitachi hardware, removing the 'uhci_hcd' module caused a kernel oops, and the following error :

BUG: warning at arch/ia64/kernel/iosapic.c:1001/iosapic_unregister_intr()

Even after the 'uhci_hcd' module was reloaded, there was no access to USB devices. As well, on systems that have legacy interrupts, 'acpi_unregister_gsi' incorrectly called 'iosapci_unregister_intr()', causing warning messages to be logged.

* when a page was mapped with mmap(), and 'PROT_WRITE' was the only 'prot' argument, the first read of that page caused a segmentation fault. If the page was read after it was written to, no fault occurred. This was incompatible with the Red Hat Enterprise Linux 4 behavior.

* due to a NULL pointer dereference in powernowk8_init(), a panic may have occurred.

* certain error conditions handled by the bonding sysfs interface could have left rtnl_lock() unbalanced, either by locking and returning without unlocking, or by unlocking when it did not lock, possibly causing a 'kernel: RTNL: assertion failed at net/core/fib_rules.c' error.

* the kernel currently expects a maximum of six Machine Check Exception (MCE) banks to be exposed by a CPU. Certain CPUs have 7 or more, which may have caused the MCE to be incorrectly reported.

* a race condition in UNIX domain sockets may have caused recv() to return zero. For clusters, this may have caused unexpected failovers.

* msgrcv() frequently returned an incorrect 'ERESTARTNOHAND (514)' error number.

* on certain Intel Itanium-based systems, when kdump was configured to halt the system after a dump operation, after the 'System halted.' output, the kernel continued to output endless 'soft lockup' messages.

Red Hat Enterprise Linux 5 users are advised to upgrade to these updated packages, which contain backported patches to resolve these issues.

a. Service Console update for DHCP and third-party library update    for DHCP client.

   DHCP is an Internet-standard protocol by which a computer can be    connected to a local network, ask to be given configuration    information, and receive from a server enough information to    configure itself as a member of that network.

   A stack-based buffer overflow in the script_write_params method in    ISC DHCP dhclient allows remote DHCP servers to execute arbitrary    code via a crafted subnet-mask option.

   The Common Vulnerabilities and Exposures Project (cve.mitre.org)    has assigned the name CVE-2009-0692 to this issue.

   An insecure temporary file use flaw was discovered in the DHCP    daemon's init script ('/etc/init.d/dhcpd'). A local attacker could    use this flaw to overwrite an arbitrary file with the output of the    'dhcpd -t' command via a symbolic link attack, if a system    administrator executed the DHCP init script with the 'configtest',    'restart', or 'reload' option.

   The Common Vulnerabilities and Exposures Project (cve.mitre.org)    has assigned the name CVE-2009-1893 to this issue.

b. Updated Service Console package kernel

   Service Console package kernel update to version    kernel-2.4.21-58.EL.

   The Common Vulnerabilities and Exposures project (cve.mitre.org)    has assigned the names CVE-2008-4210, CVE-2008-3275, CVE-2008-0598,    CVE-2008-2136, CVE-2008-2812, CVE-2007-6063, CVE-2008-3525 to the    security issues fixed in kernel-2.4.21-58.EL

c. JRE Security Update

   JRE update to version 1.5.0_18, which addresses multiple security    issues that existed in earlier releases of JRE.

   The Common Vulnerabilities and Exposures project (cve.mitre.org) has    assigned the following names to the security issues fixed in    JRE 1.5.0_17: CVE-2008-2086, CVE-2008-5347, CVE-2008-5348,    CVE-2008-5349, CVE-2008-5350, CVE-2008-5351, CVE-2008-5352,    CVE-2008-5353, CVE-2008-5354, CVE-2008-5356, CVE-2008-5357,    CVE-2008-5358, CVE-2008-5359, CVE-2008-5360, CVE-2008-5339,    CVE-2008-5342, CVE-2008-5344, CVE-2008-5345, CVE-2008-5346,    CVE-2008-5340, CVE-2008-5341, CVE-2008-5343, and CVE-2008-5355.

   The Common Vulnerabilities and Exposures project (cve.mitre.org) has    assigned the following names to the security issues fixed in    JRE 1.5.0_18: CVE-2009-1093, CVE-2009-1094, CVE-2009-1095,    CVE-2009-1096, CVE-2009-1097, CVE-2009-1098, CVE-2009-1099,    CVE-2009-1100, CVE-2009-1101, CVE-2009-1102, CVE-2009-1103,    CVE-2009-1104, CVE-2009-1105, CVE-2009-1106, and CVE-2009-1107.

The openSUSE 11.0 kernel was updated to 2.6.25.11.

It fixes following security problems: CVE-2008-2812: Various tty / serial devices did not check functionpointers for NULL before calling them, leading to potential crashes or code execution. The devices affected are usually only accessible by the root user though.

CVE-2008-2750: The pppol2tp_recvmsg function in drivers/net/pppol2tp.c in the Linux kernel allows remote attackers to cause a denial of service (kernel heap memory corruption and system crash) and possibly have unspecified other impact via a crafted PPPOL2TP packet that results in a large value for a certain length variable.

No CVE yet: On x86_64 systems, a incorrect buffersize in LDT handling might lead to local untrusted attackers causing a crash of the machine or potentially execute code with kernel privileges.

The update also has lots of other bugfixes that are listed in the RPM changelog.

Updated kernel packages that resolve several security issues and fix various bugs are now available for Red Hat Enterprise Linux 3.

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 addresses the following security issues :

* Tavis Ormandy discovered a deficiency in the Linux kernel 32-bit and 64-bit emulation. This could allow a local, unprivileged user to prepare and run a specially crafted binary which would use this deficiency to leak uninitialized and potentially sensitive data.
(CVE-2008-0598, Important)

* a possible kernel memory leak was found in the Linux kernel Simple Internet Transition (SIT) INET6 implementation. This could allow a local, unprivileged user to cause a denial of service. (CVE-2008-2136, Important)

* missing capability checks were found in the SBNI WAN driver which could allow a local user to bypass intended capability restrictions.
(CVE-2008-3525, Important)

* the do_truncate() and generic_file_splice_write() functions did not clear the setuid and setgid bits. This could allow a local, unprivileged user to obtain access to privileged information.
(CVE-2008-4210, Important)

* a buffer overflow flaw was found in Integrated Services Digital Network (ISDN) subsystem. A local, unprivileged user could use this flaw to cause a denial of service. (CVE-2007-6063, Moderate)

* multiple NULL pointer dereferences were found in various Linux kernel network drivers. These drivers were missing checks for terminal validity, which could allow privilege escalation. (CVE-2008-2812, Moderate)

* a deficiency was found in the Linux kernel virtual filesystem (VFS) implementation. This could allow a local, unprivileged user to attempt file creation within deleted directories, possibly causing a denial of service. (CVE-2008-3275, Moderate)

This update also fixes the following bugs :

* the incorrect kunmap function was used in nfs_xdr_readlinkres.
kunmap() was used where kunmap_atomic() should have been. As a consequence, if an NFSv2 or NFSv3 server exported a volume containing a symlink which included a path equal to or longer than the local system's PATH_MAX, accessing the link caused a kernel oops. This has been corrected in this update.

* mptctl_gettargetinfo did not check if pIoc3 was NULL before using it as a pointer. This caused a kernel panic in mptctl_gettargetinfo in some circumstances. A check has been added which prevents this.

* lost tick compensation code in the timer interrupt routine triggered without apparent cause. When running as a fully-virtualized client, this spurious triggering caused the 64-bit version of Red Hat Enterprise Linux 3 to present highly inaccurate times. With this update the lost tick compensation code is turned off when the operating system is running as a fully-virtualized client under Xen or VMware(r).

All Red Hat Enterprise Linux 3 users should install this updated kernel which addresses these vulnerabilities and fixes these bugs.

This kernel update fixes various bugs and also several security issues :

CVE-2008-4576: Fixed a crash in SCTP INIT-ACK, on mismatch between SCTP AUTH availability. This might be exploited remotely for a denial of service (crash) attack.

CVE-2008-3833: The generic_file_splice_write function in fs/splice.c in the Linux kernel does not properly strip setuid and setgid bits when there is a write to a file, which allows local users to gain the privileges of a different group, and obtain sensitive information or possibly have unspecified other impact, by splicing into an inode in order to create an executable file in a setgid directory.

CVE-2008-4210: fs/open.c in the Linux kernel before 2.6.22 does not properly strip setuid and setgid bits when there is a write to a file, which allows local users to gain the privileges of a different group, and obtain sensitive information or possibly have unspecified other impact, by creating an executable file in a setgid directory through the (1) truncate or (2) ftruncate function in conjunction with memory-mapped I/O.

CVE-2008-4302: fs/splice.c in the splice subsystem in the Linux kernel before 2.6.22.2 does not properly handle a failure of the add_to_page_cache_lru function, and subsequently attempts to unlock a page that was not locked, which allows local users to cause a denial of service (kernel BUG and system crash), as demonstrated by the fio I/O tool.

CVE-2008-3528: The ext[234] filesystem code fails to properly handle corrupted data structures. With a mounted filesystem image or partition that have corrupted dir->i_size and dir->i_blocks, a user performing either a read or write operation on the mounted image or partition can lead to a possible denial of service by spamming the logfile.

CVE-2007-6716: fs/direct-io.c in the dio subsystem in the Linux kernel did not properly zero out the dio struct, which allows local users to cause a denial of service (OOPS), as demonstrated by a certain fio test.

CVE-2008-3525: Added missing capability checks in sbni_ioctl().

CVE-2008-3272: Fixed range checking in the snd_seq OSS ioctl, which could be used to leak information from the kernel.

CVE-2008-2931: The do_change_type function in fs/namespace.c did not verify that the caller has the CAP_SYS_ADMIN capability, which allows local users to gain privileges or cause a denial of service by modifying the properties of a mountpoint.

CVE-2008-2812: Various NULL ptr checks have been added to tty op functions, which might have been used by local attackers to execute code. We think that this affects only devices openable by root, so the impact is limited.

CVE-2008-1673: Added range checking in ASN.1 handling for the CIFS and SNMP NAT netfilter modules.

CVE-2008-3527: arch/i386/kernel/sysenter.c in the Virtual Dynamic Shared Objects (vDSO) implementation in the Linux kernel before 2.6.21 did not properly check boundaries, which allows local users to gain privileges or cause a denial of service via unspecified vectors, related to the install_special_mapping, syscall, and syscall32_nopage functions.

The openSUSE 10.3 kernel was update to 2.6.22.19. This includes bugs and security fixes.

CVE-2008-4576: Fixed a crash in SCTP INIT-ACK, on mismatch between SCTP AUTH availability. This might be exploited remotely for a denial of service (crash) attack.

CVE-2008-3528: The ext[234] filesystem code fails to properly handle corrupted data structures. With a mounted filesystem image or partition that have corrupted dir->i_size and dir->i_blocks, a user performing either a read or write operation on the mounted image or partition can lead to a possible denial of service by spamming the logfile.

CVE-2007-6716: fs/direct-io.c in the dio subsystem in the Linux kernel did not properly zero out the dio struct, which allows local users to cause a denial of service (OOPS), as demonstrated by a certain fio test.

CVE-2008-3525: Added missing capability checks in sbni_ioctl().

CVE-2008-3272: Fixed range checking in the snd_seq OSS ioctl, which could be used to leak information from the kernel.

CVE-2008-3276: An integer overflow flaw was found in the Linux kernel dccp_setsockopt_change() function. An attacker may leverage this vulnerability to trigger a kernel panic on a victim's machine remotely.

CVE-2008-1673: Added range checking in ASN.1 handling for the CIFS and SNMP NAT netfilter modules.

CVE-2008-2826: A integer overflow in SCTP was fixed, which might have been used by remote attackers to crash the machine or potentially execute code.

CVE-2008-2812: Various NULL ptr checks have been added to tty op functions, which might have been used by local attackers to execute code. We think that this affects only devices openable by root, so the impact is limited.

This update of the SUSE Linux Enterprise 10 Service Pack 1 kernel contains lots of bugfixes and several security fixes :

  - Added missing capability checks in sbni_ioctl().
    (CVE-2008-3525)

  - On AMD64 some string operations could leak kernel     information into userspace. (CVE-2008-0598)

  - Added range checking in ASN.1 handling for the CIFS and     SNMP NAT netfilter modules. (CVE-2008-1673)

  - Fixed range checking in the snd_seq OSS ioctl, which     could be used to leak information from the kernel.
    (CVE-2008-3272)

  - Fixed a memory leak when looking up deleted directories     which could be used to run the system out of memory.
    (CVE-2008-3275)

  - The do_change_type function in fs/namespace.c did not     verify that the caller has the CAP_SYS_ADMIN capability,     which allows local users to gain privileges or cause a     denial of service by modifying the properties of a     mountpoint. (CVE-2008-2931)

  - Various NULL ptr checks have been added to tty op     functions, which might have been used by local attackers     to execute code. We think that this affects only devices     openable by root, so the impact is limited.
    (CVE-2008-2812)

It was discovered that there were multiple NULL pointer function dereferences in the Linux kernel terminal handling code. A local attacker could exploit this to execute arbitrary code as root, or crash the system, leading to a denial of service. (CVE-2008-2812)

The do_change_type routine did not correctly validation administrative users. A local attacker could exploit this to block mount points or cause private mounts to be shared, leading to denial of service or a possible loss of privacy. (CVE-2008-2931)

Tobias Klein discovered that the OSS interface through ALSA did not correctly validate the device number. A local attacker could exploit this to access sensitive kernel memory, leading to a denial of service or a loss of privacy. (CVE-2008-3272)

Zoltan Sogor discovered that new directory entries could be added to already deleted directories. A local attacker could exploit this, filling up available memory and disk space, leading to a denial of service. (CVE-2008-3275)

In certain situations, the fix for CVE-2008-0598 from USN-623-1 was causing infinite loops in the writev syscall. This update corrects the mistake. We apologize for the inconvenience.

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.

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

  - CVE-2007-6282     Dirk Nehring discovered a vulnerability in the IPsec     code that allows remote users to cause a denial of     service by sending a specially crafted ESP packet.

  - CVE-2008-0598     Tavis Ormandy discovered a vulnerability that allows     local users to access uninitialized kernel memory,     possibly leaking sensitive data. This issue is specific     to the amd64-flavour kernel images.

  - CVE-2008-2729     Andi Kleen discovered an issue where uninitialized     kernel memory was being leaked to userspace during an     exception. This issue may allow local users to gain     access to sensitive data. Only the amd64-flavour Debian     kernel images are affected.

  - CVE-2008-2812     Alan Cox discovered an issue in multiple tty drivers     that allows local users to trigger a denial of service     (NULL pointer dereference) and possibly obtain elevated     privileges.

  - CVE-2008-2826     Gabriel Campana discovered an integer overflow in the     sctp code that can be exploited by local users to cause     a denial of service.

  - CVE-2008-2931     Miklos Szeredi reported a missing privilege check in the     do_change_type() function. This allows local,     unprivileged users to change the properties of mount     points.

  - CVE-2008-3272     Tobias Klein reported a locally exploitable data leak in     the snd_seq_oss_synth_make_info() function. This may     allow local users to gain access to sensitive     information.

  - CVE-2008-3275     Zoltan Sogor discovered a coding error in the VFS that     allows local users to exploit a kernel memory leak     resulting in a denial of service.

Updated kernel packages are now available as part of ongoing support and maintenance of Red Hat Enterprise Linux 4. This is the seventh regular update.

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

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

Kernel Feature Support: * iostat displays I/O performance for partitions * I/O task accounting added to getrusage(), allowing comprehensive core statistics * page cache pages count added to show_mem() output * tux O_ATOMICLOOKUP flag removed from the open() system call: replaced with O_CLOEXEC * the kernel now exports process limit information to /proc/[PID]/limits * implement udp_poll() to reduce likelihood of false positives returned from select() * the TCP_RTO_MIN parameter can now be configured to a maximum of 3000 milliseconds. This is configured using 'ip route' * update CIFS to version 1.50

Added Features: * nfs.enable_ino64 boot command line parameter: enable and disable 32-bit inode numbers when using NFS * tick 'divider' kernel boot parameter: reduce CPU overhead, and increase efficiency at the cost of lowering timing accuracy * /proc/sys/vm/nfs-writeback-lowmem-only tunable parameter: resolve NFS read performance * /proc/sys/vm/write-mapped tunable option, allowing the option of faster NFS reads * support for Large Receive Offload as a networking module * core dump masking, allowing a core dump process to skip the shared memory segments of a process

Virtualization: * para-virtualized network and block device drivers, to increase fully-virtualized guest performance * support for more than three VNIF numbers per guest domain

Platform Support: * AMD ATI SB800 SATA controller, AMD ATI SB600 and SB700 40-pin IDE cable * 64-bit DMA support on AMD ATI SB700 * PCI device IDs to support Intel ICH10 * /dev/msr[0-n] device files * powernow-k8 as a module * SLB shadow buffer support for IBM POWER6 systems * support for CPU frequencies greater than 32-bit on IBM POWER5, IBM POWER6 * floating point load and store handler for IBM POWER6

Added Drivers and Updates: * ixgbe 1.1.18, for the Intel 82598 10GB ethernet controller * bnx2x 1.40.22, for network adapters on the Broadcom 5710 chipset * dm-hp-sw 1.0.0, for HP Active/Standby * zfcp version and bug fixes * qdio to fix FCP/SCSI write I/O expiring on LPARs * cio bug fixes * eHEA latest upstream, and netdump and netconsole support * ipr driver support for dual SAS RAID controllers
* correct CPU cache info and SATA support for Intel Tolapai * i5000_edac support for Intel 5000 chipsets * i3000_edac support for Intel 3000 and 3010 chipsets * add i2c_piix4 module on 64-bit systems to support AMD ATI SB600, 700 and 800 * i2c-i801 support for Intel Tolapai * qla4xxx: 5.01.01-d2 to 5.01.02-d4-rhel4.7-00 * qla2xxx:
8.01.07-d4 to 8.01.07-d4-rhel4.7-02 * cciss: 2.6.16 to 2.6.20 * mptfusion: 3.02.99.00rh to 3.12.19.00rh * lpfc:0: 8.0.16.34 to 8.0.16.40 * megaraid_sas: 00.00.03.13 to 00.00.03.18-rh1 * stex:
3.0.0.1 to 3.6.0101.2 * arcmsr: 1.20.00.13 to 1.20.00.15.rh4u7 * aacraid: 1.1-5[2441] to 1.1.5[2455]

Miscellaneous Updates: * OFED 1.3 support * wacom driver to add support for Cintiq 20WSX, Wacom Intuos3 12x19, 12x12 and 4x6 tablets * sata_svw driver to support Broadcom HT-1100 chipsets * libata to un-blacklist Hitachi drives to enable NCQ * ide driver allows command line option to disable ide drivers * psmouse support for cortps protocol

These updated packages fix the following security issues :

* NULL pointer access due to missing checks for terminal validity.
(CVE-2008-2812, Moderate)

* a security flaw was found in the Linux kernel Universal Disk Format file system. (CVE-2006-4145, Low)

For further details, refer to the latest Red Hat Enterprise Linux 4.7 release notes: redhat.com/docs/manuals/enterprise

The remote CentOS system is missing a security update which has been documented in Red Hat advisory RHSA-2008-0973.

The remote CentOS system is missing a security update which has been documented in Red Hat advisory RHSA-2008-0612.

ID	Name	Product	Family	Severity
89116	VMware ESX / ESXi Multiple Vulnerabilities (VMSA-2009-0014) (remote check)	Nessus	Misc.	critical
79447	OracleVM 2.1 : kernel (OVMSA-2008-2005)	Nessus	OracleVM Local Security Checks	high
67763	Oracle Linux 3 : kernel (ELSA-2008-0973)	Nessus	Oracle Linux Local Security Checks	high
67730	Oracle Linux 5 : kernel (ELSA-2008-0612)	Nessus	Oracle Linux Local Security Checks	high
60507	Scientific Linux Security Update : kernel on SL3.x i386/x86_64	Nessus	Scientific Linux Local Security Checks	high
60459	Scientific Linux Security Update : kernel on SL5.x i386/x86_64	Nessus	Scientific Linux Local Security Checks	high
59131	SuSE 10 Security Update : Linux kernel (ZYPP Patch Number 5608)	Nessus	SuSE Local Security Checks	critical
59129	SuSE 10 Security Update : Linux kernel (ZYPP Patch Number 5477)	Nessus	SuSE Local Security Checks	critical
43701	CentOS 5 : kernel (CESA-2008:0612)	Nessus	CentOS Local Security Checks	high
42179	VMSA-2009-0014 : VMware ESX patches for DHCP, Service Console kernel, and JRE resolve multiple security issues	Nessus	VMware ESX Local Security Checks	high
41533	SuSE 10 Security Update : Linux kernel (ZYPP Patch Number 5473)	Nessus	SuSE Local Security Checks	critical
40008	openSUSE Security Update : kernel (kernel-111)	Nessus	SuSE Local Security Checks	high
35190	RHEL 3 : kernel (RHSA-2008:0973)	Nessus	Red Hat Local Security Checks	high
35186	CentOS 3 : kernel (CESA-2008:0973)	Nessus	CentOS Local Security Checks	high
34755	openSUSE 10 Security Update : kernel (kernel-5751)	Nessus	SuSE Local Security Checks	critical
34457	openSUSE 10 Security Update : kernel (kernel-5700)	Nessus	SuSE Local Security Checks	critical
34331	SuSE 10 Security Update : the Linux Kernel (x86) (ZYPP Patch Number 5566)	Nessus	SuSE Local Security Checks	critical
34048	Ubuntu 6.06 LTS / 7.04 / 7.10 / 8.04 LTS : linux, linux-source-2.6.15/20/22 vulnerabilities (USN-637-1)	Nessus	Ubuntu Local Security Checks	high
34032	Debian DSA-1630-1 : linux-2.6 - denial of service/information leak	Nessus	Debian Local Security Checks	high
33830	RHEL 5 : kernel (RHSA-2008:0612)	Nessus	Red Hat Local Security Checks	high
33581	RHEL 4 : kernel (RHSA-2008:0665)	Nessus	Red Hat Local Security Checks	high
801460	CentOS RHSA-2008-0973 Security Check	Log Correlation Engine	Generic	high
801456	CentOS RHSA-2008-0612 Security Check	Log Correlation Engine	Generic	high

Detections

Analytics

CVE-2008-2812

high

Tenable Plugins

critical

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