What’s Vulnerable › Vulnerabilities

CVE-2011-2022

• Severity: medium (CVSS 6.9 v2.0)
• 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: 2011-05-09 · updated 2026-06-16
• Weakness: CWE-20

Description

The agp_generic_remove_memory function in drivers/char/agp/generic.c in the Linux kernel before 2.6.38.5 does not validate a certain start parameter, which allows local users to gain privileges or cause a denial of service (system crash) via a crafted AGPIOC_UNBIND agp_ioctl ioctl call, a different vulnerability than CVE-2011-1745.

Affected products

• Linux kernel: before 2.6.38.5 — fixed in 2.6.38.5
• Red Hat Enterprise Linux: 5.0
• RedHat Enterprise Linux Aus: 5.6
• RedHat Enterprise Linux Desktop: 5.0
• RedHat Enterprise Linux Eus: 5.6
• RedHat Enterprise Linux Server: 5.0
• RedHat Enterprise Linux Workstation: 5.0

How to fix

Upgrade to a fixed version: Linux kernel 2.6.38.5. Check the vendor advisory for mitigations.

References

• http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=194b3da873fd334ef183806db751473512af29ce
• http://openwall.com/lists/oss-security/2011/04/21/4
• http://openwall.com/lists/oss-security/2011/04/22/7
• http://rhn.redhat.com/errata/RHSA-2011-0927.html
• http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.38.5
• http://www.securityfocus.com/bid/47843
• https://bugzilla.redhat.com/show_bug.cgi?id=698996
• https://lkml.org/lkml/2011/4/14/293
• http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=194b3da873fd334ef183806db751473512af29ce
• http://openwall.com/lists/oss-security/2011/04/21/4
• http://openwall.com/lists/oss-security/2011/04/22/7
• http://rhn.redhat.com/errata/RHSA-2011-0927.html

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