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Fencer Intel
low 2.1

CVE-2015-7872 json

The key_gc_unused_keys function in security/keys/gc.c in the Linux kernel through 4.2.6 allows local users to cause a denial of service (OO…

published 2015-11-16 10 y ago modified 2026-06-17 4 mo ago also EUVD-2015-7770

cvss
2.1
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.5%
EPSS 0.5% chance of exploitation in 30 days, percentile 43%
public exploits
0
none known

Summary

The key_gc_unused_keys function in security/keys/gc.c in the Linux kernel through 4.2.6 allows local users to cause a denial of service (OOPS) via crafted keyctl commands.

Patch / fix

  • linux Debian 14, Debian 13, Debian 12 4.2.5-1

debian advisories DEBIAN-CVE-2015-7872

  • linux Ubuntu 14.04 LTS 3.13.0-70.113
  • linux-lts-wily Ubuntu 14.04 LTS 4.2.0-21.25~14.04.1
  • linux-lts-vivid Ubuntu 14.04 LTS 3.19.0-37.42~14.04.1
  • linux-lts-utopic Ubuntu 14.04 LTS 3.16.0-55.74~14.04.1

ubuntu advisories UBUNTU-CVE-2015-7872

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • kernel RHEL 6 2.6.32-573.12.1.el6
  • perf RHEL 6 2.6.32-573.12.1.el6
  • python-perf RHEL 6 2.6.32-573.12.1.el6
  • kernel-kdump RHEL 6 2.6.32-573.12.1.el6
  • kernel-firmware RHEL 6 2.6.32-573.12.1.el6
  • kernel-bootwrapper RHEL 6 2.6.32-573.12.1.el6
  • kernel-abi-whitelists RHEL 6 2.6.32-573.12.1.el6
  • kernel-debuginfo-common-i686 RHEL 6 2.6.32-573.12.1.el6

red hat advisories RHSA-2015:2636RHSA-2016:0224RHSA-2016:0212RHSA-2016:0185

  • kernel-rt SLE Real Time 11 SP3 3.0.101.rt130-0.33.44.2
  • kernel-syms-rt SLE Real Time 11 SP3 3.0.101.rt130-0.33.44.1
  • kernel-rt_trace SLE Real Time 11 SP3 3.0.101.rt130-0.33.44.2
  • kernel-source-rt SLE Real Time 11 SP3 3.0.101.rt130-0.33.44.2
  • kernel-rt SLE Real Time 11 SP4 3.0.101.rt130-48.1
  • kernel-syms-rt SLE Real Time 11 SP4 3.0.101.rt130-48.1
  • kernel-rt_trace SLE Real Time 11 SP4 3.0.101.rt130-48.1
  • kernel-source-rt SLE Real Time 11 SP4 3.0.101.rt130-48.1

suse advisories SUSE-SU-2016:2074-1SUSE-SU-2016:0434-1SUSE-SU-2016:0384-1SUSE-SU-2016:0387-1SUSE-SU-2016:0386-1SUSE-SU-2016:0380-1

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-2015-7872 updated cvss 7.2

kernel: Keyrings crash triggerable by unprivileged user

  • Red Hat Enterprise Linux Client (v. 7) perf 3.10.0-327.10.1.el7, kernel 3.10.0-327.10.1.el7, python-perf 3.10.0-327.10.1.el7, kernel-tools 3.10.0-327.10.1.el7, kernel-tools-libs 3.10.0-327.10.1.el7, kernel-abi-whitelists 3.10.0-327.10.1.el7, +1 more Red Hat Enterprise Linux Client Optional (v. 7) kernel-debuginfo-common-x86_64 3.10.0-327.10.1.el7 Red Hat Enterprise Linux ComputeNode (v. 7) perf 3.10.0-327.10.1.el7, kernel 3.10.0-327.10.1.el7, python-perf 3.10.0-327.10.1.el7, kernel-tools 3.10.0-327.10.1.el7, kernel-tools-libs 3.10.0-327.10.1.el7, kernel-abi-whitelists 3.10.0-327.10.1.el7, +1 more Red Hat Enterprise Linux ComputeNode Optional (v. 7) kernel-debuginfo-common-x86_64 3.10.0-327.10.1.el7
    fixed: vendor fix RHSA-2016:0185
  • Red Hat Enterprise Linux Desktop (v. 6) perf 2.6.32-573.12.1.el6, kernel 2.6.32-573.12.1.el6, kernel-firmware 2.6.32-573.12.1.el6, kernel-abi-whitelists 2.6.32-573.12.1.el6, kernel-debuginfo-common-i686 2.6.32-573.12.1.el6, kernel-debuginfo-common-x86_64 2.6.32-573.12.1.el6 Red Hat Enterprise Linux Desktop Optional (v. 6) python-perf 2.6.32-573.12.1.el6, kernel-debuginfo-common-i686 2.6.32-573.12.1.el6, kernel-debuginfo-common-x86_64 2.6.32-573.12.1.el6
    fixed: vendor fix RHSA-2015:2636
  • Red Hat Enterprise Linux for Real Time for NFV (v. 7) kernel-rt 3.10.0-327.10.1.rt56.211.el7_2, kernel-rt-kvm 3.10.0-327.10.1.rt56.211.el7_2, kernel-rt-trace 3.10.0-327.10.1.rt56.211.el7_2, kernel-rt-debug-kvm 3.10.0-327.10.1.rt56.211.el7_2, kernel-rt-trace-kvm 3.10.0-327.10.1.rt56.211.el7_2, kernel-rt-debuginfo-common-x86_64 3.10.0-327.10.1.rt56.211.el7_2
    fixed: vendor fix RHSA-2016:0212
  • Red Hat Enterprise Linux HPC Node (v. 6) perf 2.6.32-573.12.1.el6, kernel 2.6.32-573.12.1.el6, kernel-firmware 2.6.32-573.12.1.el6, kernel-abi-whitelists 2.6.32-573.12.1.el6, kernel-debuginfo-common-i686 2.6.32-573.12.1.el6, kernel-debuginfo-common-x86_64 2.6.32-573.12.1.el6 Red Hat Enterprise Linux HPC Node Optional (v. 6) python-perf 2.6.32-573.12.1.el6, kernel-debuginfo-common-x86_64 2.6.32-573.12.1.el6
    fixed: vendor fix RHSA-2015:2636
  • Red Hat Enterprise Linux Realtime (v. 7) kernel-rt 3.10.0-327.10.1.rt56.211.el7_2, kernel-rt-trace 3.10.0-327.10.1.rt56.211.el7_2, kernel-rt-debuginfo-common-x86_64 3.10.0-327.10.1.rt56.211.el7_2
    fixed: vendor fix RHSA-2016:0212
  • Red Hat Enterprise Linux Server (v. 6) perf 2.6.32-573.12.1.el6, kernel 2.6.32-573.12.1.el6, kernel-kdump 2.6.32-573.12.1.el6, kernel-firmware 2.6.32-573.12.1.el6, kernel-bootwrapper 2.6.32-573.12.1.el6, kernel-abi-whitelists 2.6.32-573.12.1.el6, +4 more
    fixed: vendor fix RHSA-2015:2636
  • Red Hat Enterprise Linux Server (v. 7) perf 3.10.0-327.10.1.el7, kernel 3.10.0-327.10.1.el7, python-perf 3.10.0-327.10.1.el7, kernel-kdump 3.10.0-327.10.1.el7, kernel-tools 3.10.0-327.10.1.el7, kernel-tools-libs 3.10.0-327.10.1.el7, +6 more
    fixed: vendor fix RHSA-2016:0185
  • Red Hat Enterprise Linux Server Optional (v. 6) python-perf 2.6.32-573.12.1.el6, kernel-debuginfo-common-i686 2.6.32-573.12.1.el6, kernel-debuginfo-common-ppc64 2.6.32-573.12.1.el6, kernel-debuginfo-common-s390x 2.6.32-573.12.1.el6, kernel-debuginfo-common-x86_64 2.6.32-573.12.1.el6
    fixed: vendor fix RHSA-2015:2636
show 7 more
  • Red Hat Enterprise Linux Server Optional (v. 7) kernel-debuginfo-common-ppc64 3.10.0-327.10.1.el7, kernel-debuginfo-common-x86_64 3.10.0-327.10.1.el7, kernel-debuginfo-common-ppc64le 3.10.0-327.10.1.el7
    fixed: vendor fix RHSA-2016:0185
  • Red Hat Enterprise Linux Workstation (v. 6) perf 2.6.32-573.12.1.el6, kernel 2.6.32-573.12.1.el6, kernel-firmware 2.6.32-573.12.1.el6, kernel-abi-whitelists 2.6.32-573.12.1.el6, kernel-debuginfo-common-i686 2.6.32-573.12.1.el6, kernel-debuginfo-common-x86_64 2.6.32-573.12.1.el6
    fixed: vendor fix RHSA-2015:2636
  • Red Hat Enterprise Linux Workstation (v. 7) perf 3.10.0-327.10.1.el7, kernel 3.10.0-327.10.1.el7, python-perf 3.10.0-327.10.1.el7, kernel-tools 3.10.0-327.10.1.el7, kernel-tools-libs 3.10.0-327.10.1.el7, kernel-abi-whitelists 3.10.0-327.10.1.el7, +1 more
    fixed: vendor fix RHSA-2016:0185
  • Red Hat Enterprise Linux Workstation Optional (v. 6) python-perf 2.6.32-573.12.1.el6, kernel-debuginfo-common-i686 2.6.32-573.12.1.el6, kernel-debuginfo-common-x86_64 2.6.32-573.12.1.el6
    fixed: vendor fix RHSA-2015:2636
  • Red Hat Enterprise Linux Workstation Optional (v. 7) kernel-debuginfo-common-x86_64 3.10.0-327.10.1.el7
    fixed: vendor fix RHSA-2016:0185
  • Red Hat MRG Realtime for RHEL 6 Server v.2 kernel-rt 3.10.0-327.rt56.171.el6rt, kernel-rt-trace 3.10.0-327.rt56.171.el6rt, kernel-rt-vanilla 3.10.0-327.rt56.171.el6rt, kernel-rt-firmware 3.10.0-327.rt56.171.el6rt, kernel-rt-debuginfo-common-x86_64 3.10.0-327.rt56.171.el6rt
    fixed: vendor fix RHSA-2016:0224
  • Red Hat Enterprise Linux 5 kernel
    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

0.51% chance of exploitation in the next 30 days, higher than 43% 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:N/I:N/A:P

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.