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Fencer Intel
low 2.1

CVE-2011-1163 json

The osf_partition function in fs/partitions/osf.c in the Linux kernel before 2.6.38 does not properly handle an invalid number of partition…

published 2011-04-10 15 y ago modified 2026-06-16 4 mo ago also EUVD-2011-1173

cvss
2.1
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 35%
public exploits
0
none known

Summary

The osf_partition function in fs/partitions/osf.c in the Linux kernel before 2.6.38 does not properly handle an invalid number of partitions, which might allow local users to obtain potentially sensitive information from kernel heap memory via vectors related to partition-table parsing.

Patch / fix

  • linux linux_kernel 2.6.38
  • kernel RHEL 5 2.6.18-238.12.1.el5
  • kernel-PAE RHEL 5 2.6.18-238.12.1.el5
  • kernel-xen RHEL 5 2.6.18-238.12.1.el5
  • kernel-kdump RHEL 5 2.6.18-238.12.1.el5
  • kernel-debuginfo-common RHEL 5 2.6.18-238.12.1.el5
  • kernel RHEL 6 2.6.32-131.0.15.el6
  • perf RHEL 6 2.6.32-131.0.15.el6
  • kernel-kdump RHEL 6 2.6.32-131.0.15.el6

red hat advisories RHSA-2011:0833RHSA-2011:0542RHSA-2011:0883RHSA-2011:0500

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-2011-1163 updated cvss 2.1

kernel: fs/partitions: Corrupted OSF partition table infoleak

  • Red Hat MRG Realtime for RHEL 5 Server perf 2.6.33.9-rt31.64.el5rt, kernel-rt 2.6.33.9-rt31.64.el5rt, kernel-rt-trace 2.6.33.9-rt31.64.el5rt, kernel-rt-vanilla 2.6.33.9-rt31.64.el5rt, kernel-rt-debuginfo-common 2.6.33.9-rt31.64.el5rt
    fixed: vendor fix RHSA-2011:0500
  • Red Hat Enterprise Linux (v. 5.6.z server) kernel 2.6.18-238.12.1.el5, kernel-PAE 2.6.18-238.12.1.el5, kernel-xen 2.6.18-238.12.1.el5, kernel-kdump 2.6.18-238.12.1.el5, kernel-debuginfo-common 2.6.18-238.12.1.el5
    fixed: vendor fix RHSA-2011:0833
  • Red Hat Enterprise Linux Desktop (v. 6) perf 2.6.32-131.0.15.el6, kernel 2.6.32-131.0.15.el6, kernel-kdump 2.6.32-131.0.15.el6, kernel-firmware 2.6.32-131.0.15.el6, kernel-bootwrapper 2.6.32-131.0.15.el6, kernel-debuginfo-common-i686 2.6.32-131.0.15.el6, +3 more Red Hat Enterprise Linux HPC Node (v. 6) perf 2.6.32-131.0.15.el6, kernel 2.6.32-131.0.15.el6, kernel-kdump 2.6.32-131.0.15.el6, kernel-firmware 2.6.32-131.0.15.el6, kernel-bootwrapper 2.6.32-131.0.15.el6, kernel-debuginfo-common-i686 2.6.32-131.0.15.el6, +3 more Red Hat Enterprise Linux Server (v. 6) perf 2.6.32-131.0.15.el6, kernel 2.6.32-131.0.15.el6, kernel-kdump 2.6.32-131.0.15.el6, kernel-firmware 2.6.32-131.0.15.el6, kernel-bootwrapper 2.6.32-131.0.15.el6, kernel-debuginfo-common-i686 2.6.32-131.0.15.el6, +3 more
    fixed: vendor fix RHSA-2011:0542
  • Red Hat Enterprise Linux Server EUS (v. 6.0) perf 2.6.32-71.31.1.el6, kernel 2.6.32-71.31.1.el6, kernel-kdump 2.6.32-71.31.1.el6, kernel-firmware 2.6.32-71.31.1.el6, kernel-bootwrapper 2.6.32-71.31.1.el6, kernel-debuginfo-common-i686 2.6.32-71.31.1.el6, +3 more
    fixed: vendor fix RHSA-2011:0883
  • Red Hat Enterprise Linux Workstation (v. 6) perf 2.6.32-131.0.15.el6, kernel 2.6.32-131.0.15.el6, kernel-kdump 2.6.32-131.0.15.el6, kernel-firmware 2.6.32-131.0.15.el6, kernel-bootwrapper 2.6.32-131.0.15.el6, kernel-debuginfo-common-i686 2.6.32-131.0.15.el6, +3 more
    fixed: vendor fix RHSA-2011:0542

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

0.41% chance of exploitation in the next 30 days, higher than 35% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 2.0 2.1 AV:L/AC:L/Au:N/C:P/I:N/A:N

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.