Skip to content
Fencer Intel
medium 4.9

CVE-2012-0957 json

The override_release function in kernel/sys.c in the Linux kernel before 3.4.16 allows local users to obtain sensitive information from ker…

published 2012-12-21 13 y ago modified 2026-06-16 4 mo ago also EUVD-2012-0980

cvss
4.9
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.0%
EPSS 1.0% chance of exploitation in 30 days, percentile 61%
public exploits
1
Exploit-DB

Summary

The override_release function in kernel/sys.c in the Linux kernel before 3.4.16 allows local users to obtain sensitive information from kernel stack memory via a uname system call in conjunction with a UNAME26 personality.

Patch / fix

  • linux Debian 14, Debian 13, Debian 12 3.2.32-1

debian advisories DEBIAN-CVE-2012-0957

  • kernel-rt enterprise mrg 2 3.2.33-rt50.66.el6rt
  • mrg-rt-release enterprise mrg 2 3.2.33-rt50.66.el6rt
  • kernel-rt-trace enterprise mrg 2 3.2.33-rt50.66.el6rt
  • kernel-rt-vanilla enterprise mrg 2 3.2.33-rt50.66.el6rt
  • kernel-rt-firmware enterprise mrg 2 3.2.33-rt50.66.el6rt
  • kernel-rt-debuginfo-common-x86_64 enterprise mrg 2 3.2.33-rt50.66.el6rt

red hat advisories RHSA-2012:1491

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-2012-0957 updated cvss 2.1

kernel: uts: stack memory leak in UNAME26

  • Red Hat MRG Realtime for RHEL 6 Server v.2 kernel-rt 3.2.33-rt50.66.el6rt, mrg-rt-release 3.2.33-rt50.66.el6rt, kernel-rt-trace 3.2.33-rt50.66.el6rt, kernel-rt-vanilla 3.2.33-rt50.66.el6rt, kernel-rt-firmware 3.2.33-rt50.66.el6rt, kernel-rt-debuginfo-common-x86_64 3.2.33-rt50.66.el6rt
    fixed: vendor fix RHSA-2012:1491
  • Red Hat Enterprise Linux 5 kernel Red Hat Enterprise Linux 6 perf, kernel, python-perf, kernel-kdump, kernel-firmware, kernel-bootwrapper, +1 more
    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

Timeline

  1. First public exploit (EDB-37937)
  2. Published

Exploit prediction

0.96% chance of exploitation in the next 30 days, higher than 61% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • EDB-37937 Linux Kernel 3.2.x - 'uname()' System Call Local Information Disclosure local, 2012-10-09
  • openwall.com http://www.openwall.com/lists/oss-security/2012/10/09/4 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 2.0 4.9 AV:L/AC:L/Au:N/C:C/I:N/A:N

Classification

Weakness
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.