The NFSv4 implementation in the Linux kernel before 3.2.2 does not properly handle bitmap sizes in GETACL replies, which allows remote NFS servers to cause a denial of service (OOPS) by sending an excessive number of bitmap words.

Updated kernel-rt packages that fix multiple security issues and various bugs are now available for Red Hat Enterprise MRG 2.1.

The Red Hat Security Response Team has rated this update as having important security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section.

These packages contain the Linux kernel.

Security fixes :

* SG_IO ioctl SCSI requests on partitions or LVM volumes could be passed to the underlying block device, allowing a privileged user to bypass restrictions and gain read and write access (and be able to issue other SCSI commands) to the entire block device. (CVE-2011-4127, Important)

* A local, unprivileged user could use an integer overflow flaw in drm_mode_dirtyfb_ioctl() to cause a denial of service or escalate their privileges. (CVE-2012-0044, Important)

* A local, unprivileged user could use a flaw in the Performance Events implementation to cause a denial of service. (CVE-2011-2918, Moderate)

* A local, unprivileged user could use flaws in the XFS file system implementation to cause a denial of service or escalate their privileges by mounting a specially crafted disk. (CVE-2011-4077, CVE-2012-0038, Moderate)

* A local, unprivileged user could use a flaw in the Out of Memory (OOM) killer to monopolize memory, have their process skipped by the OOM killer, or cause other tasks to be terminated. (CVE-2011-4097, Moderate)

* A local, unprivileged user could use a flaw in the key management facility to cause a denial of service. (CVE-2011-4110, Moderate)

* A malicious Network File System version 4 (NFSv4) server could return a crafted reply to a GETACL request, causing a denial of service on the client. (CVE-2011-4131, Moderate)

* A local attacker could use a flaw in the Journaling Block Device (JBD) to crash the system by mounting a specially crafted ext3 or ext4 disk. (CVE-2011-4132, Moderate)

* A flaw in igmp_heard_query() could allow an attacker, who is able to send certain IGMP (Internet Group Management Protocol) packets to a target system, to cause a denial of service. (CVE-2012-0207, Moderate)

* If lock contention during signal sending occurred when in a software interrupt handler that is using the per-CPU debug stack, the task could be scheduled out on the realtime kernel, possibly leading to debug stack corruption. A local, unprivileged user could use this flaw to cause a denial of service. (CVE-2012-0810, Moderate)

Red Hat would like to thank Chen Haogang for reporting CVE-2012-0044;
Wang Xi for reporting CVE-2012-0038; Shubham Goyal for reporting CVE-2011-4097; Andy Adamson for reporting CVE-2011-4131; and Simon McVittie for reporting CVE-2012-0207.

Bug fixes :

* When a sleeping task, waiting on a futex (fast userspace mutex), tried to get the spin_lock(hb->lock) RT-mutex, if the owner of the futex released the lock, the sleeping task was put on a futex proxy lock. Consequently, the sleeping task was blocked on two locks and eventually terminated in the BUG_ON() function. With this update, the WAKEUP_INPROGRESS pseudo-lock has been added to be used as a proxy lock. This pseudo-lock tells the sleeping task that it is being woken up so that the task no longer tries to get the second lock. Now, the futex code works as expected and sleeping tasks no longer crash in the described scenario. (BZ#784733)

* When the CONFIG_CRYPTO_FIPS configuration option was disabled, some services such as sshd and ipsec, while working properly, returned warning messages regarding this missing option during start up. With this update, CONFIG_CRYPTO_FIPS has been enabled and no warning messages are now returned in the described scenario. (BZ#786145)

* Previously, when a read operation on a loop device failed, the data successfully read from the device was not cleared and could eventually leak. This bug has been fixed and all data are now properly cleared in the described scenario. (BZ#761420)

* Due to an assembler-sourced object, the perf utility (from the perf-rt package) for AMD64 and Intel 64 architectures contained an executable stack. This update adds the '.note.GNU-stack' section definition to the bench/mem-memcpy-x86-64-asm.S component of perf, with all flags disabled, and perf no longer contains an executable stack, thus fixing this bug. (BZ#783570)

A flaw was found in the way the Linux kernel's Event Poll (epoll) subsystem handled large, nested epoll structures. A local, unprivileged user could use this flaw to cause a denial of service.

A malicious Network File System version 4 (NFSv4) server could return a crafted reply to a GETACL request, causing a denial of service on the client.

The rds_ib_xmit function in net/rds/ib_send.c in the Reliable Datagram Sockets (RDS) protocol implementation in the Linux kernel 3.7.4 and earlier allows local users to cause a denial of service (BUG_ON and kernel panic) by establishing an RDS connection with the source IP address equal to the IPoIB interface's own IP address, as demonstrated by rds-ping.

Description of changes:

* Avoid bug caused by corrupted Ext4 filesystem.

When mounting an ext4 filesystem, the kernel was not checking for zero length extents. This would cause a BUG_ON assertion failure in the log.


* NULL pointer dereference in the SCSI subsystem.

A NULL dereference may occur if a SCSI device is physically removed without being logically removed from the system.

This would lead to a NULL dereference since the revalidation routine assumed the device is always present while it runs.


* Resource leak in USB networking driver.

The usbnet core incorrectly cleared a pointer to the underlying device resulting in a resource leak when unlinking requests.


* Inode corruption in XFS inode lookup.

The XFS inode cache did not correctly initialize the inode before insertion into the cache which could result in corruption when racing with an inode lookup.


* Kernel crash in SUNRPC cache management.

Many SUNRPC cache implementations would not handle a zero-length string resulting in a kernel panic.


* Unbalanced locking in VFS non-local alias search.

A code path responsible for finding aliases on a non-local filesystem did not correctly release a lock resulting in a system hang.


* Memory corruption on nfsd shutdown.

A race condition between closing down a SUNRPC transport and enqueueing data could result in a use-after-free condition resulting in a denial-of-service or privilege escalation.


* NULL pointer dereference with misconfigured USB FTDI devices.

A USB FTDI without a manufacturer string would result in a NULL pointer dereference and kernel crash when the device was plugged in.


* Kernel information leak in X86 ptrace TLS regset.

The TLS lookup could run off the end of the descriptor list reading from kernel memory.


* Divide-by-zero in NTP.

Integer overflow in NTP when setting the time could result in a divide-by-zero and kernel panic.


* CVE-2011-4127: KVM privilege escalation through insufficient validation in SG_IO ioctl.

Using the SG_IO IOCTL to issue SCSI requests to partitions or LVM volumes resulted in the requests being passed to the underlying block device. If a privileged user only had access to a single partition or LVM volume, they could use this flaw to bypass those restrictions and gain read and write access (and be able to issue other SCSI commands) to the entire block device.

In KVM (Kernel-based Virtual Machine) environments using raw format virtio disks backed by a partition or LVM volume, a privileged guest user could bypass intended restrictions and issue read and write requests (and other SCSI commands) on the host, and possibly access the data of other guests that reside on the same underlying block device.


* CVE-2012-2384: Integer overflow in Intel i915 command processing.

An integer overflow in the Intel i915 family display driver could cause memory corruption on 32-bit systems.


* Correctly merge virtual memory areas when binding.

When mbind() is called for adjacent areas, they are expected to be merged into a single virtual memory area.


* Small UDP packets dropped on transmission consistently in vmxnet3.

Small (<54 byte) packets will get dropped consistently on transmission due to an error in the optimization of the code.


* CVE-2011-4131: Kernel crash in NFSv4.

nfs4_getfacl decoding causes a kernel crash when a server returns more than 2 GETATTR bitmap words in response to the FATTR4_ACL attribute request.

The remote Oracle Linux 6 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2012-0862 advisory.

    - [security] fix compile error in commoncap.c (Eric Paris) [806726] {CVE-2012-2123}
    - [security] fcaps: clear the same personality flags as suid when fcaps are used (Eric Paris) [806726]     {CVE-2012-2123}
    - [net] rds: fix rds-ping inducing kernel panic (Jay Fenlason) [803936] {CVE-2012-2372}
    - [net] sock: validate data_len before allocating skb in sock_alloc_send_pskb() (Jason Wang) [814504]     {CVE-2012-2136}
    - [virt] kvm: Fix buffer overflow in kvm_set_irq() (Avi Kivity) [816155] {CVE-2012-2137}
    - [mm] read_pmd_atomic: fix pmd_populate SMP race condition (Andrea Arcangeli) [820762] {CVE-2012-1179}
    - [vhost] net: fix possible NULL pointer dereference of vq->bufs (Jason Wang) [814288] {CVE-2012-2119}
    - [net] macvtap: validate zerocopy vectors before building skb (Jason Wang) [814288] {CVE-2012-2119}
    - [net] macvtap: set SKBTX_DEV_ZEROCOPY only when skb is built successfully (Jason Wang) [814288]     {CVE-2012-2119}
    - [net] macvtap: put zerocopy page when fail to get all requested user pages (Jason Wang) [814288]     {CVE-2012-2119}
    - [net] macvtap: fix zerocopy offset calculation when building skb (Jason Wang) [814288] {CVE-2012-2119}
    - [virt] kvm: unmap pages from the iommu when slots are removed (Alex Williamson) [811653] {CVE-2012-2121}
    - [virt] VMX: vmx_set_cr0 expects kvm->srcu locked (Marcelo Tosatti) [807507] {CVE-2012-1601}
    - [virt] KVM: Ensure all vcpus are consistent with in-kernel irqchip settings (Marcelo Tosatti) [807507]     {CVE-2012-1601}
    - [fs] epoll: kabi fixups for epoll limit wakeup paths (Jason Baron) [681689] {CVE-2011-1083}
    - [fs] epoll: limit paths (Jason Baron) [681689] {CVE-2011-1083}
    - [fs] jbd2: clear BH_Delay & BH_Unwritten in journal_unmap_buffer (Eric Sandeen) [748713] {CVE-2011-4086}
    - [dm] fixing test for NULL pointer testing (Paolo Bonzini) [752380] {CVE-2011-4127}
    - [dm] do not forward ioctls from logical volumes to the underlying device (Paolo Bonzini) [752380]     {CVE-2011-4127}
    - [block] fail SCSI passthrough ioctls on partition devices (Paolo Bonzini) [752380] {CVE-2011-4127}
    - [block] add and use scsi_blk_cmd_ioctl (Paolo Bonzini) [752380] {CVE-2011-4127}
    - [kernel] regset: Return -EFAULT, not -EIO, on host-side memory fault (Jerome Marchand) [799213]     {CVE-2012-1097}
    - [kernel] regset: Prevent null pointer reference on readonly regsets (Jerome Marchand) [799213]     {CVE-2012-1097}

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The SUSE Linux Enterprise 11 SP2 kernel was updated to 3.0.34, fixing a lot of bugs and security issues.

The update from Linux kernel 3.0.31 to 3.0.34 also fixes various bugs not listed here.

The following security issues have been fixed :

  - Local attackers could trigger an overflow in     sock_alloc_send_pksb(), potentially crashing the machine     or escalate privileges. (CVE-2012-2136)

  - A memory leak in transparent hugepages on mmap failure     could be used by local attacker to run the machine out     of memory (local denial of service). (CVE-2012-2390)

  - A malicious guest driver could overflow the host stack     by passing a long descriptor, so potentially crashing     the host system or escalating privileges on the host.
    (CVE-2012-2119)

  - Malicious NFS server could crash the clients when more     than 2 GETATTR bitmap words are returned in response to     the FATTR4_ACL attribute requests, only incompletely     fixed by CVE-2011-4131. (CVE-2012-2375)

The following non-security bugs have been fixed :

Hyper-V :

  - storvsc: Properly handle errors from the host.
    (bnc#747404)

  - HID: hid-hyperv: Do not use hid_parse_report() directly.

  - HID: hyperv: Set the hid drvdata correctly.

  - drivers/hv: Get rid of an unnecessary check in     vmbus_prep_negotiate_resp().

  - drivers/hv: util: Properly handle version negotiations.

  - hv: fix return type of hv_post_message().

  - net/hyperv: Add flow control based on hi/low watermark.

  - usb/net: rndis: break out <1/rndis.h> defines. only     net/hyperv part

  - usb/net: rndis: remove ambiguous status codes. only     net/hyperv part

  - usb/net: rndis: merge command codes. only net/hyperv     part

  - net/hyperv: Adding cancellation to ensure rndis filter     is closed.

  - update hv drivers to 3.4-rc1, requires new hv_kvp_daemon :

  - drivers: hv: kvp: Add/cleanup connector defines.

  - drivers: hv: kvp: Move the contents of hv_kvp.h to     hyperv.h.

  - net/hyperv: Convert camel cased variables in     rndis_filter.c to lower cases.

  - net/hyperv: Correct the assignment in     netvsc_recv_callback().

  - net/hyperv: Remove the unnecessary memset in     rndis_filter_send().

  - drivers: hv: Cleanup the kvp related state in hyperv.h.

  - tools: hv: Use hyperv.h to get the KVP definitions.

  - drivers: hv: kvp: Cleanup the kernel/user protocol.

  - drivers: hv: Increase the number of VCPUs supported in     the guest.

  - net/hyperv: Fix data corruption in     rndis_filter_receive().

  - net/hyperv: Add support for vlan trunking from guests.

  - Drivers: hv: Add new message types to enhance KVP.

  - Drivers: hv: Support the newly introduced KVP messages     in the driver.

  - Tools: hv: Fully support the new KVP verbs in the user     level daemon.

  - Tools: hv: Support enumeration from all the pools.

  - net/hyperv: Fix the code handling tx busy.

  - patches.suse/suse-hv-pata_piix-ignore-disks.patch     replace our version of this patch with upstream variant:
    ata_piix: defer disks to the Hyper-V drivers by default     libata: add a host flag to ignore detected ATA devices.

Btrfs :

  - btrfs: more module message prefixes.

  - vfs: re-implement writeback_inodes_sb(_nr)_if_idle() and     rename them

  - btrfs: flush all the dirty pages if     try_to_writeback_inodes_sb_nr() fails

  - vfs: re-implement writeback_inodes_sb(_nr)_if_idle() and     rename them

  - btrfs: fix locking in btrfs_destroy_delayed_refs

  - btrfs: wake up transaction waiters when aborting a     transaction

  - btrfs: abort the transaction if the commit fails

  - btrfs: fix btrfs_destroy_marked_extents

  - btrfs: unlock everything properly in the error case for     nocow

  - btrfs: fix return code in drop_objectid_items

  - btrfs: check to see if the inode is in the log before     fsyncing

  - btrfs: pass locked_page into     extent_clear_unlock_delalloc if theres an error

  - btrfs: check the return code of btrfs_save_ino_cache

  - btrfs: do not update atime for RO snapshots     (FATE#306586).

  - btrfs: convert the inode bit field to use the actual bit     operations

  - btrfs: fix deadlock when the process of delayed refs     fails

  - btrfs: stop defrag the files automatically when doin     readonly remount or umount

  - btrfs: avoid memory leak of extent state in error     handling routine

  - btrfs: make sure that we have made everything in pinned     tree clean

  - btrfs: destroy the items of the delayed inodes in error     handling routine

  - btrfs: ulist realloc bugfix

  - btrfs: bugfix in btrfs_find_parent_nodes

  - btrfs: bugfix: ignore the wrong key for indirect tree     block backrefs

  - btrfs: avoid buffer overrun in btrfs_printk

  - btrfs: fall back to non-inline if we do not have enough     space

  - btrfs: NUL-terminate path buffer in DEV_INFO ioctl     result

  - btrfs: avoid buffer overrun in mount option handling

  - btrfs: do not do balance in readonly mode

  - btrfs: fix the same inode id problem when doing auto     defragment

  - btrfs: fix wrong error returned by adding a device

  - btrfs: use fastpath in extent state ops as much as     possible Misc :

  - tcp: drop SYN+FIN messages. (bnc#765102)

  - mm: avoid swapping out with swappiness==0 (swappiness).

  - thp: avoid atomic64_read in pmd_read_atomic for 32bit     PAE. (bnc#762991)

  - paravirt: Split paravirt MMU ops (bnc#556135,     bnc#754690, FATE#306453).

  - paravirt: Only export pv_mmu_ops symbol if PARAVIRT_MMU

  - parvirt: Stub support KABI for KVM_MMU (bnc#556135,     bnc#754690, FATE#306453).

  - tmpfs: implement NUMA node interleaving. (bnc#764209)

  - synaptics-hp-clickpad: Fix the detection of LED on the     recent HP laptops. (bnc#765524)

  - supported.conf: mark xt_AUDIT as supported. (bnc#765253)

  - mm: pmd_read_atomic: fix 32bit PAE pmd walk vs     pmd_populate SMP race condition. (bnc#762991 /     CVE-2012-2373)

  - xhci: Do not free endpoints in xhci_mem_cleanup().
    (bnc#763307)

  - xhci: Fix invalid loop check in xhci_free_tt_info().
    (bnc#763307)

  - drm: Skip too big EDID extensions. (bnc#764900)

  - drm/i915: Add HP EliteBook to LVDS-temporary-disable     list. (bnc#763717)

  - hwmon: (fam15h_power) Increase output resolution.
    (bnc#759336)

  - hwmon: (k10temp) Add support for AMD Trinity CPUs.
    (bnc#759336)

  - rpm/kernel-binary.spec.in: Own the right -kdump initrd.
    (bnc#764500)

  - memcg: prevent from OOM with too many dirty pages.

  - dasd: re-prioritize partition detection message     (bnc#764091,LTC#81617).

  - kernel: pfault task state race (bnc#764091,LTC#81724).

  - kernel: clear page table for sw large page emulation     (bnc#764091,LTC#81933).

  - USB: fix bug of device descriptor got from superspeed     device. (bnc#761087)

  - xfrm: take net hdr len into account for esp payload size     calculation. (bnc#759545)

  - st: clean up dev cleanup in st_probe. (bnc#760806)

  - st: clean up device file creation and removal.
    (bnc#760806)

  - st: get rid of scsi_tapes array. (bnc#760806)

  - st: raise device limit. (bnc#760806)

  - st: Use static class attributes. (bnc#760806)

  - mm: Optimize put_mems_allowed() usage (VM performance).

  - cifs: fix oops while traversing open file list (try #4).
    (bnc#756050)

  - scsi: Fix dm-multipath starvation when scsi host is     busy. (bnc#763485)

  - dasd: process all requests in the device tasklet.
    (bnc#763267)

  - rt2x00:Add RT539b chipset support. (bnc#760237)

  - kabi/severities: Ignore changes in     drivers/net/wireless/rt2x00, these are just exports used     among the rt2x00 modules.

  - rt2800: radio 3xxx: reprogram only lower bits of RF_R3.
    (bnc#759805)

  - rt2800: radio 3xxx: program RF_R1 during channel switch.
    (bnc#759805)

  - rt2800: radio 3xxxx: channel switch RX/TX calibration     fixes. (bnc#759805)

  - rt2x00: Avoid unnecessary uncached. (bnc#759805)

  - rt2x00: Introduce sta_add/remove callbacks. (bnc#759805)

  - rt2x00: Add WCID to crypto struct. (bnc#759805)

  - rt2x00: Add WCID to HT TX descriptor. (bnc#759805)

  - rt2x00: Move bssidx calculation into its own function.
    (bnc#759805)

  - rt2x00: Make use of sta_add/remove callbacks in rt2800.
    (bnc#759805)

  - rt2x00: Forbid aggregation for STAs not programmed into     the hw. (bnc#759805)

  - rt2x00: handle spurious pci interrupts. (bnc#759805)

  - rt2800: disable DMA after firmware load.

  - rt2800: radio 3xxx: add channel switch calibration     routines. (bnc#759805)

  - rpm/kernel-binary.spec.in: Obsolete ath3k, as it is now     in the tree.

  - floppy: remove floppy-specific O_EXCL handling.
    (bnc#757315)

  - floppy: convert to delayed work and single-thread wq.
    (bnc#761245)

This update fixes the following security issues :

  - It was found that a previous update did not correctly     fix the CVE-2011-4131 issue. A malicious Network File     System version 4 (NFSv4) server could return a crafted     reply to a GETACL request, causing a denial of service     on the client. (CVE-2012-2375, Moderate)

  - A divide-by-zero flaw was found in the TCP Illinois     congestion control algorithm implementation in the Linux     kernel. If the TCP Illinois congestion control algorithm     were in use (the sysctl net.ipv4.tcp_congestion_control     variable set to 'illinois'), a local, unprivileged user     could trigger this flaw and cause a denial of service.
    (CVE-2012-4565, Moderate)

  - A NULL pointer dereference flaw was found in the way a     new node's hot added memory was propagated to other     nodes' zonelists. By utilizing this newly added memory     from one of the remaining nodes, a local, unprivileged     user could use this flaw to cause a denial of service.
    (CVE-2012-5517, Moderate)

  - It was found that the initial release of Scientific     Linux 6 did not correctly fix the CVE-2009-4307 issue, a     divide-by-zero flaw in the ext4 file system code. A     local, unprivileged user with the ability to mount an     ext4 file system could use this flaw to cause a denial     of service. (CVE-2012-2100, Low)

  - A flaw was found in the way the Linux kernel's IPv6     implementation handled overlapping, fragmented IPv6     packets. A remote attacker could potentially use this     flaw to bypass protection mechanisms (such as a firewall     or intrusion detection system (IDS)) when sending     network packets to a target system. (CVE-2012-4444, Low)

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

Andy Adamson discovered a flaw in the Linux kernel's NFSv4 implementation. A remote NFS server (attacker) could exploit this flaw to cause a denial of service. (CVE-2011-4131)

Steve Grubb reported a flaw with Linux fscaps (file system base capabilities) when used to increase the permissions of a process. For application on which fscaps are in use a local attacker can disable address space randomization to make attacking the process with raised privileges easier. (CVE-2012-2123)

An error was discovered in the Linux kernel's network TUN/TAP device implementation. A local user with access to the TUN/TAP interface (which is not available to unprivileged users until granted by a root user) could exploit this flaw to crash the system or potential gain administrative privileges. (CVE-2012-2136)

Stephan Mueller reported a flaw in the Linux kernel's dl2k network driver's handling of ioctls. An unprivileged local user could leverage this flaw to cause a denial of service. (CVE-2012-2313)

Timo Warns reported multiple flaws in the Linux kernel's hfsplus filesystem. An unprivileged local user could exploit these flaws to gain root system priviliges. (CVE-2012-2319)

A flaw was found in the Linux kernel's Reliable Datagram Sockets (RDS) protocol implementation. A local, unprivileged user could use this flaw to cause a denial of service. (CVE-2012-2372)

A flaw was discovered in the Linux kernel's NFSv4 (Network file system) handling of ACLs (access control lists). A remote NFS server (attacker) could cause a denial of service (OOPS). (CVE-2012-2375)

Update to Linux 2.6.43.8 (3.3.8).

Disabled 32bit NX emulation. Suspected of being broken and it deviates from upstream.

Unless there are further security issues, this will likely be the last F15 kernel update before End-of-Life. The 3.3.7 stable kernel contains a number of important bug fixes

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.

The remote Redhat Enterprise Linux 6 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2012:0862 advisory.

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

    This update fixes the following security issues:

    * A flaw was found in the way the Linux kernel's Event Poll (epoll)     subsystem handled large, nested epoll structures. A local, unprivileged     user could use this flaw to cause a denial of service. (CVE-2011-1083,     Moderate)

    * A malicious Network File System version 4 (NFSv4) server could return a     crafted reply to a GETACL request, causing a denial of service on the     client. (CVE-2011-4131, Moderate)

    Red Hat would like to thank Nelson Elhage for reporting CVE-2011-1083, and     Andy Adamson for reporting CVE-2011-4131.

    This update also fixes several hundred bugs and adds enhancements. Refer to     the Red Hat Enterprise Linux 6.3 Release Notes for information on the most     significant of these changes, and the Technical Notes for further     information, both linked to in the References.

    All Red Hat Enterprise Linux 6 users are advised to install these updated     packages, which correct these issues, and fix the bugs and add the     enhancements noted in the Red Hat Enterprise Linux 6.3 Release Notes and     Technical Notes. The system must be rebooted for this update to take     effect.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Andy Adamson discovered a flaw in the Linux kernel's NFSv4 implementation. A remote NFS server (attacker) could exploit this flaw to cause a denial of service. (CVE-2011-4131)

A flaw was discovered in the Linux kernel's KVM (kernel virtual machine). An administrative user in the guest OS could leverage this flaw to cause a denial of service in the host OS. (CVE-2012-2121)

Schacher Raindel discovered a flaw in the Linux kernel's memory handling when hugetlb is enabled. An unprivileged local attacker could exploit this flaw to cause a denial of service and potentially gain higher privileges. (CVE-2012-2133)

Stephan Mueller reported a flaw in the Linux kernel's dl2k network driver's handling of ioctls. An unprivileged local user could leverage this flaw to cause a denial of service. (CVE-2012-2313)

Timo Warns reported multiple flaws in the Linux kernel's hfsplus filesystem. An unprivileged local user could exploit these flaws to gain root system priviliges. (CVE-2012-2319)

Xi Wang discovered a flaw in the Linux kernel's i915 graphics driver handling of cliprect on 32 bit systems. An unprivileged local attacker could leverage this flaw to cause a denial of service or potentially gain root privileges. (CVE-2012-2383)

Xi Wang discovered a flaw in the Linux kernel's i915 graphics driver handling of buffer_count on 32 bit systems. An unprivileged local attacker could leverage this flaw to cause a denial of service or potentially gain root privileges. (CVE-2012-2384)

Andy Adamson discovered a flaw in the Linux kernel's NFSv4 implementation. A remote NFS server (attacker) could exploit this flaw to cause a denial of service. (CVE-2011-4131)

A flaw was discovered in the Linux kernel's KVM (kernel virtual machine). An administrative user in the guest OS could leverage this flaw to cause a denial of service in the host OS. (CVE-2012-2121)

Schacher Raindel discovered a flaw in the Linux kernel's memory handling when hugetlb is enabled. An unprivileged local attacker could exploit this flaw to cause a denial of service and potentially gain higher privileges. (CVE-2012-2133)

Stephan Mueller reported a flaw in the Linux kernel's dl2k network driver's handling of ioctls. An unprivileged local user could leverage this flaw to cause a denial of service. (CVE-2012-2313)

Timo Warns reported multiple flaws in the Linux kernel's hfsplus filesystem. An unprivileged local user could exploit these flaws to gain root system priviliges. (CVE-2012-2319)

Xi Wang discovered a flaw in the Linux kernel's i915 graphics driver handling of cliprect on 32 bit systems. An unprivileged local attacker could leverage this flaw to cause a denial of service or potentially gain root privileges. (CVE-2012-2383)

Xi Wang discovered a flaw in the Linux kernel's i915 graphics driver handling of buffer_count on 32 bit systems. An unprivileged local attacker could leverage this flaw to cause a denial of service or potentially gain root privileges. (CVE-2012-2384).

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.

Andy Adamson discovered a flaw in the Linux kernel's NFSv4 implementation. A remote NFS server (attacker) could exploit this flaw to cause a denial of service. (CVE-2011-4131)

A flaw was found in the Linux kernel's KVM (Kernel Virtual Machine) virtual cpu setup. An unprivileged local user could exploit this flaw to crash the system leading to a denial of service. (CVE-2012-1601)

A flaw was discovered in the Linux kernel's KVM (kernel virtual machine). An administrative user in the guest OS could leverage this flaw to cause a denial of service in the host OS. (CVE-2012-2121)

Steve Grubb reported a flaw with Linux fscaps (file system base capabilities) when used to increase the permissions of a process. For application on which fscaps are in use a local attacker can disable address space randomization to make attacking the process with raised privileges easier. (CVE-2012-2123)

Schacher Raindel discovered a flaw in the Linux kernel's memory handling when hugetlb is enabled. An unprivileged local attacker could exploit this flaw to cause a denial of service and potentially gain higher privileges. (CVE-2012-2133).

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 3.3.7 stable kernel contains a number of important bug fixes.

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.

Security update to fix CVE-2011-4131 and CVE-2011-4132

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.

ID	Name	Product	Family	Severity
76639	RHEL 6 : MRG (RHSA-2012:0333)	Nessus	Red Hat Local Security Checks	medium
69590	Amazon Linux AMI : kernel (ALAS-2012-100)	Nessus	Amazon Linux Local Security Checks	medium
68677	Oracle Linux 5 / 6 : Unbreakable Enterprise kernel (ELSA-2012-2022)	Nessus	Oracle Linux Local Security Checks	medium
68554	Oracle Linux 6 : kernel (ELSA-2012-0862)	Nessus	Oracle Linux Local Security Checks	medium
64176	SuSE 11.2 Security Update : Linux kernel (SAT Patch Numbers 6453 / 6457)	Nessus	SuSE Local Security Checks	high
64175	SuSE 11.2 Security Update : Linux kernel (SAT Patch Number 6463)	Nessus	SuSE Local Security Checks	high
63313	Scientific Linux Security Update : kernel on SL6.x i386/x86_64 (20121218)	Nessus	Scientific Linux Local Security Checks	high
61508	USN-1530-1 : linux-ti-omap4 vulnerabilities	Nessus	Ubuntu Local Security Checks	high
59661	Fedora 15 : kernel-2.6.43.8-1.fc15 (2012-8931)	Nessus	Fedora Local Security Checks	medium
59590	RHEL 6 : Red Hat Enterprise Linux 6 kernel (RHSA-2012:0862)	Nessus	Red Hat Local Security Checks	medium
59553	USN-1476-1 : linux-ti-omap4 vulnerabilities	Nessus	Ubuntu Local Security Checks	high
59476	Ubuntu 11.10 : linux vulnerabilities (USN-1472-1)	Nessus	Ubuntu Local Security Checks	high
59475	Ubuntu 10.04 LTS : linux-lts-backport-oneiric vulnerabilities (USN-1471-1)	Nessus	Ubuntu Local Security Checks	high
59474	Ubuntu 10.04 LTS : linux-lts-backport-natty vulnerabilities (USN-1470-1)	Nessus	Ubuntu Local Security Checks	high
59280	Fedora 16 : kernel-3.3.7-1.fc16 (2012-8359)	Nessus	Fedora Local Security Checks	medium
59279	Fedora 17 : kernel-3.3.7-1.fc17 (2012-8314)	Nessus	Fedora Local Security Checks	medium
56897	Fedora 16 : kernel-3.1.1-2.fc16 (2011-15959)	Nessus	Fedora Local Security Checks	medium

Detections

Analytics

CVE-2011-4131

medium

Tenable Plugins

medium

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medium