CVE-2011-3637

Severity: medium (CVSS 5.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2012-05-17 · updated 2026-06-16
Weakness: CWE-476

Description

The m_stop function in fs/proc/task_mmu.c in the Linux kernel before 2.6.39 allows local users to cause a denial of service (OOPS) via vectors that trigger an m_start error.

Affected products

Linux kernel: before 2.6.39 — fixed in 2.6.39
Red Hat Enterprise Linux: 6.0

How to fix

Upgrade to a fixed version: Linux kernel 2.6.39. Check the vendor advisory for mitigations.

References

http://ftp.osuosl.org/pub/linux/kernel/v2.6/ChangeLog-2.6.39
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=76597cd31470fa130784c78fadb4dab2e624a723
http://www.openwall.com/lists/oss-security/2012/02/06/1
https://bugzilla.redhat.com/show_bug.cgi?id=747848
https://github.com/torvalds/linux/commit/76597cd31470fa130784c78fadb4dab2e624a723
http://ftp.osuosl.org/pub/linux/kernel/v2.6/ChangeLog-2.6.39
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=76597cd31470fa130784c78fadb4dab2e624a723
http://www.openwall.com/lists/oss-security/2012/02/06/1
https://bugzilla.redhat.com/show_bug.cgi?id=747848
https://github.com/torvalds/linux/commit/76597cd31470fa130784c78fadb4dab2e624a723

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