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OpenAdvisories
Unscored Public exploit CVE-2011-2183 EUVD-2011-2175GHSA-cx72-f838-ppm8

Race condition in the scan_get_next_rmap_item function in mm/ksm.c in the Linux kernel before 2.6.39.3, when Kernel SamePage Merging (KSM) …

Published Jun 13, 2012 · Updated Aug 6, 2024 · Assigned by redhat

Description

Race condition in the scan_get_next_rmap_item function in mm/ksm.c in the Linux kernel before 2.6.39.3, when Kernel SamePage Merging (KSM) is enabled, allows local users to cause a denial of service (NULL pointer dereference) or possibly have unspecified other impact via a crafted application.

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

Debian

Security tracker ↗
ReleasePackageFixed inAdvisory
Debian 6.0 linux-2.6 2.6.32-39squeeze1 DSA-2389-1

Red Hat

Security tracker ↗
ReleasePackageFixed inAdvisory
RHEL 6 perf +14 2.6.32-131.12.1.el6 RHSA-2011:1189
Show 1 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
Red Hat MRG 2 kernel-rt +10 2.6.33.9-rt31.75.el6rt RHSA-2011:1253

Public exploits

Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.

Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.

Exploit-DB 1

Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.

Advisories 3

References