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Fencer Intel
medium 6.9

CVE-2011-2022 json

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…

published 2011-05-09 15 y ago modified 2026-06-16 4 mo ago also EUVD-2011-2016

cvss
6.9
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 32%
public exploits
0
none known

Summary

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.

Patch / fix

  • linux linux_kernel 2.6.38.5
  • kernel RHEL 6 2.6.32-131.17.1.el6
  • perf RHEL 6 2.6.32-131.17.1.el6
  • kernel-kdump RHEL 6 2.6.32-131.17.1.el6
  • kernel-firmware RHEL 6 2.6.32-131.17.1.el6
  • kernel-bootwrapper RHEL 6 2.6.32-131.17.1.el6
  • kernel-debuginfo-common-i686 RHEL 6 2.6.32-131.17.1.el6
  • kernel-debuginfo-common-ppc64 RHEL 6 2.6.32-131.17.1.el6
  • kernel-debuginfo-common-s390x RHEL 6 2.6.32-131.17.1.el6

red hat advisories RHSA-2011:1350RHSA-2011:0927RHSA-2011:1253

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2011-2022 updated cvss 6.6

kernel: agp: insufficient pg_start parameter checking in AGPIOC_BIND and AGPIOC_UNBIND ioctls

  • Red Hat Enterprise Linux 4 kernel Red Hat Enterprise MRG 1 kernel-rt
    affected: no fix available
  • Red Hat Enterprise Linux (v. 5.6.z server) kernel 2.6.18-238.19.1.el5, kernel-PAE 2.6.18-238.19.1.el5, kernel-xen 2.6.18-238.19.1.el5, kernel-kdump 2.6.18-238.19.1.el5, kernel-debuginfo-common 2.6.18-238.19.1.el5
    fixed: vendor fix RHSA-2011:0927
  • Red Hat Enterprise Linux Server (v. 6) perf 2.6.32-131.17.1.el6, kernel 2.6.32-131.17.1.el6, kernel-kdump 2.6.32-131.17.1.el6, kernel-firmware 2.6.32-131.17.1.el6, kernel-bootwrapper 2.6.32-131.17.1.el6, kernel-debuginfo-common-i686 2.6.32-131.17.1.el6, +3 more
    fixed: vendor fix RHSA-2011:1350
  • Red Hat MRG Realtime for RHEL 6 Server v.2 kernel-rt 2.6.33.9-rt31.75.el6rt, kernel-rt-trace 2.6.33.9-rt31.75.el6rt, kernel-rt-vanilla 2.6.33.9-rt31.75.el6rt, kernel-rt-firmware 2.6.33.9-rt31.75.el6rt, kernel-rt-debuginfo-common-x86_64 2.6.33.9-rt31.75.el6rt
    fixed: vendor fix RHSA-2011:1253
  • Red Hat Enterprise Linux (v. 5.6.z server) kernel-headers 2.6.18-238.19.1.el5
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

0.38% chance of exploitation in the next 30 days, higher than 32% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 2.0 6.9 AV:L/AC:M/Au:N/C:C/I:C/A:C

Classification

Weakness
  • CWE-20 Improper Input Validation
Technology feeds

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.