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Vulnerability Summary for CVE-2009-0859

Original release date: 03/09/2009
Last revised: 03/22/2012
Source: US-CERT/NIST

Overview

The shm_get_stat function in ipc/shm.c in the shm subsystem in the Linux kernel before 2.6.28.5, when CONFIG_SHMEM is disabled, misinterprets the data type of an inode, which allows local users to cause a denial of service (system hang) via an SHM_INFO shmctl call, as demonstrated by running the ipcs program.

Impact

CVSS Severity (version 2.0):
CVSS v2 Base Score: 4.7 (MEDIUM) (AV:L/AC:M/Au:N/C:N/I:N/A:C) (legend)
Impact Subscore: 6.9
Exploitability Subscore: 3.4
CVSS Version 2 Metrics:
Access Vector: Locally exploitable
Access Complexity: Medium
Authentication: Not required to exploit
Impact Type: Allows disruption of service

Vendor Statements (disclaimer)

Official Statement from Red Hat (03/10/2009)
Not vulnerable. This issue did not affect the versions of the Linux kernel as shipped with Red Hat Enterprise Linux 2.1, 3, 4, 5, or Red Hat Enterprise MRG.

References to Advisories, Solutions, and Tools

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External Source: MLIST
Name: [linux-kernel] 20080229 [BUG] soft lockup detected with ipcs
External Source: SUSE
Name: SUSE-SA:2009:028
External Source: SECUNIA
Name: 35394
External Source: CONFIRM
Name: http://patchwork.kernel.org/patch/6554/
External Source: SUSE
Name: SUSE-SA:2009:031
External Source: SECUNIA
Name: 35011
External Source: MLIST
Name: [oss-security] 20090306 CVE request: kernel: shm: fix shmctl(SHM_INFO) lockup with !CONFIG_SHMEM
External Source: XF
Name: linux-kernel-shmgetstat-dos(49229)
External Source: SUSE
Name: SUSE-SA:2009:030
External Source: CONFIRM
Name: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=a68e61e8ff2d46327a37b69056998b47745db6fa
External Source: UBUNTU
Name: USN-751-1
External Source: CONFIRM
Name: http://kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.28.5
External Source: SECUNIA
Name: 35121
External Source: DEBIAN
Name: DSA-1800
External Source: DEBIAN
Name: DSA-1794
External Source: SECUNIA
Name: 35390
External Source: BID
Name: 34020
External Source: MLIST
Name: [git-commits-head] 20090205 shm: fix shmctl(SHM_INFO) lockup with !CONFIG_SHMEM
External Source: SECUNIA
Name: 34981
External Source: MLIST
Name: [linux-kernel] 20090127 [PATCH 1/2] fix shmctl(SHM_INFO) lockup with !CONFIG_SHMEM
External Source: SECUNIA
Name: 35185
External Source: DEBIAN
Name: DSA-1787

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