CVE-2011-2211

Severity: high (CVSS 7.2 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2012-06-13 · updated 2026-06-16
Weakness: CWE-264

Description

The osf_wait4 function in arch/alpha/kernel/osf_sys.c in the Linux kernel before 2.6.39.4 on the Alpha platform uses an incorrect pointer, which allows local users to gain privileges by writing a certain integer value to kernel memory.

Affected products

Linux kernel: through 2.6.39.3; 2.6.39, 2.6.39-rc1, 2.6.39-rc2, 2.6.39-rc3, 2.6.39-rc4, 2.6.39-rc5 (+4)

References

http://ftp.osuosl.org/pub/linux/kernel/v2.6/ChangeLog-2.6.39.4
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=21c5977a836e399fc710ff2c5367845ed5c2527f
http://www.openwall.com/lists/oss-security/2011/06/15/7
https://github.com/torvalds/linux/commit/21c5977a836e399fc710ff2c5367845ed5c2527f
http://ftp.osuosl.org/pub/linux/kernel/v2.6/ChangeLog-2.6.39.4
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=21c5977a836e399fc710ff2c5367845ed5c2527f
http://www.openwall.com/lists/oss-security/2011/06/15/7
https://github.com/torvalds/linux/commit/21c5977a836e399fc710ff2c5367845ed5c2527f

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