Permissions, Privileges, and Access Controls in Linux kernel - CVE-2011-2211
Published: June 13, 2012 / Updated: August 11, 2020
Vulnerability identifier: #VU43998
CSH Severity: High
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2011-2211
CWE-ID: CWE-264
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.
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.
How to mitigate CVE-2011-2211
Install update from vendor's website.
Sources
- 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;a=commit;h=21c5977a836e399fc710ff2c5367845ed5c2527f
- http://www.openwall.com/lists/oss-security/2011/06/15/7
- https://github.com/torvalds/linux/commit/21c5977a836e399fc710ff2c5367845ed5c2527f