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low 2.1

CVE-2013-7421 json

The Crypto API in the Linux kernel before 3.18.5 allows local users to load arbitrary kernel modules via a bind system call for an AF_ALG s…

published 11y ago modified 4mo ago also EUVD-2013-7185

cvss
2.1
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.7%
EPSS 0.7% chance of exploitation in 30 days, percentile 53%
public exploits
0
none known

Summary

The Crypto API in the Linux kernel before 3.18.5 allows local users to load arbitrary kernel modules via a bind system call for an AF_ALG socket with a module name in the salg_name field, a different vulnerability than CVE-2014-9644.

Patch / fix

  • linux linux_kernel 3.18.5
  • linux Debian 14, Debian 13, Debian 12 3.16.7-ckt4-2

debian advisories DEBIAN-CVE-2013-7421

  • linux Ubuntu 14.04 LTS 3.13.0-48.80
  • linux-lts-utopic Ubuntu 14.04 LTS 3.16.0-33.44~14.04.1

ubuntu advisories UBUNTU-CVE-2013-7421

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 7 3.10.0-327.el7
  • perf RHEL 7 3.10.0-327.el7
  • python-perf RHEL 7 3.10.0-327.el7
  • kernel-kdump RHEL 7 3.10.0-327.el7
  • kernel-tools RHEL 7 3.10.0-327.el7
  • kernel-tools-libs RHEL 7 3.10.0-327.el7
  • kernel-bootwrapper RHEL 7 3.10.0-327.el7
  • kernel-abi-whitelists RHEL 7 3.10.0-327.el7

red hat advisories RHSA-2015:2152RHSA-2016:0068RHSA-2015:2411

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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-2013-7421 updated cvss 2.1

kernel: crypto api unprivileged arbitrary module load via request_module()

  • Red Hat Enterprise Linux Client (v. 7) perf 3.10.0-327.el7, kernel 3.10.0-327.el7, python-perf 3.10.0-327.el7, kernel-tools 3.10.0-327.el7, kernel-tools-libs 3.10.0-327.el7, kernel-abi-whitelists 3.10.0-327.el7, +1 more Red Hat Enterprise Linux Client Optional (v. 7) kernel-debuginfo-common-x86_64 3.10.0-327.el7 Red Hat Enterprise Linux ComputeNode (v. 7) perf 3.10.0-327.el7, kernel 3.10.0-327.el7, python-perf 3.10.0-327.el7, kernel-tools 3.10.0-327.el7, kernel-tools-libs 3.10.0-327.el7, kernel-abi-whitelists 3.10.0-327.el7, +1 more Red Hat Enterprise Linux ComputeNode Optional (v. 7) kernel-debuginfo-common-x86_64 3.10.0-327.el7
    fixed: vendor fix RHSA-2015:2152
  • Red Hat Enterprise Linux for Real Time (v. 7) kernel-rt 3.10.0-327.rt56.204.el7, kernel-rt-trace 3.10.0-327.rt56.204.el7, kernel-rt-debuginfo-common-x86_64 3.10.0-327.rt56.204.el7
    fixed: vendor fix RHSA-2015:2411
  • Red Hat Enterprise Linux Server (v. 7) perf 3.10.0-327.el7, kernel 3.10.0-327.el7, python-perf 3.10.0-327.el7, kernel-kdump 3.10.0-327.el7, kernel-tools 3.10.0-327.el7, kernel-tools-libs 3.10.0-327.el7, +6 more Red Hat Enterprise Linux Server Optional (v. 7) kernel-debuginfo-common-ppc64 3.10.0-327.el7, kernel-debuginfo-common-x86_64 3.10.0-327.el7, kernel-debuginfo-common-ppc64le 3.10.0-327.el7 Red Hat Enterprise Linux Workstation (v. 7) perf 3.10.0-327.el7, kernel 3.10.0-327.el7, python-perf 3.10.0-327.el7, kernel-tools 3.10.0-327.el7, kernel-tools-libs 3.10.0-327.el7, kernel-abi-whitelists 3.10.0-327.el7, +1 more Red Hat Enterprise Linux Workstation Optional (v. 7) kernel-debuginfo-common-x86_64 3.10.0-327.el7
    fixed: vendor fix RHSA-2015:2152
  • Red Hat MRG Realtime for RHEL 6 Server v.2 kernel-rt 3.10.0-327.rt56.170.el6rt, kernel-rt-trace 3.10.0-327.rt56.170.el6rt, kernel-rt-vanilla 3.10.0-327.rt56.170.el6rt, kernel-rt-firmware 3.10.0-327.rt56.170.el6rt, kernel-rt-debuginfo-common-x86_64 3.10.0-327.rt56.170.el6rt
    fixed: vendor fix RHSA-2016:0068
  • 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

Exploit prediction

0.71% chance of exploitation in the next 30 days, higher than 53% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • lkml.org https://lkml.org/lkml/2013/3/4/70 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

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

Classification

Weakness
  • CWE-269 Improper Privilege Management
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.