Skip to content
Fencer Vulns
medium 5.5

CVE-2022-50042 json

net: genl: fix error path memory leak in policy dumping

published 2025-06-18 16 mo ago modified 2026-11-05 3 d ago also EUVD-2022-55313

cvss
5.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 17%
public exploits
0
none known

Summary

In the Linux kernel, the following vulnerability has been resolved:

net: genl: fix error path memory leak in policy dumping

If construction of the array of policies fails when recording non-first policy we need to unwind.

netlink_policy_dump_add_policy() itself also needs fixing as it currently gives up on error without recording the allocated pointer in the pstate pointer.

Patch / fix

  • Linux Linux 5.10.138, 5.15.63, 5.19.4, 6.0
  • linux Debian 14, Debian 13, Debian 12 6.0.2-1

debian advisories DEBIAN-CVE-2022-50042

  • linux Ubuntu 22.04 LTS 5.15.0-53.59
  • linux-aws Ubuntu 22.04 LTS 5.15.0-1023.27
  • linux-gcp Ubuntu 22.04 LTS 5.15.0-1022.29
  • linux-gke Ubuntu 22.04 LTS 5.15.0-1020.25
  • linux-ibm Ubuntu 22.04 LTS 5.15.0-1018.21
  • linux-kvm Ubuntu 22.04 LTS 5.15.0-1021.26
  • linux-azure Ubuntu 22.04 LTS 5.15.0-1023.29
  • linux-gkeop Ubuntu 22.04 LTS 5.15.0-1008.12

ubuntu advisories UBUNTU-CVE-2022-50042

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 9 5.14.0-362.8.1.el9_3
  • rv RHEL 9 5.14.0-362.8.1.el9_3
  • perf RHEL 9 5.14.0-362.8.1.el9_3
  • rtla RHEL 9 5.14.0-362.8.1.el9_3
  • bpftool RHEL 9 7.2.0-362.8.1.el9_3
  • libperf RHEL 9 5.14.0-362.8.1.el9_3
  • kernel-rt RHEL 9 5.14.0-362.8.1.el9_3
  • kernel-64k RHEL 9 5.14.0-362.8.1.el9_3

red hat advisories RHSA-2023:7370RHSA-2023:6583RHSA-2021:4356

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-2022-50042 updated cvss 5.5

kernel: net: genl: fix error path memory leak in policy dumping

  • Red Hat Enterprise Linux 6 perf, kernel, python-perf, kernel-kdump, kernel-firmware, kernel-bootwrapper, +1 more Red Hat Enterprise Linux 7 perf, kernel, bpftool, kernel-rt, python-perf, kernel-kdump, +8 more Red Hat Enterprise Linux 8 kernel-rt, kernel-rt-kvm, kernel-rt-core, kernel-rt-modules, kernel-rt-debug-kvm, kernel-rt-debug-core, +6 more
    affected: workaround, no fix planned “Out of support scope”
  • Red Hat Enterprise Linux 9 rv, perf, rtla, kernel, bpftool, libperf, +83 more
    affected: workaround, no fix available “Fix deferred”
  • Red Hat CodeReady Linux Builder (v. 8) kernel-debuginfo-common-x86_64 4.18.0-348.el8, kernel-debuginfo-common-aarch64 4.18.0-348.el8, kernel-debuginfo-common-ppc64le 4.18.0-348.el8
    fixed: vendor fix RHSA-2021:4356
  • Red Hat CodeReady Linux Builder EUS (v.9.2) kernel-debuginfo-common-s390x 5.14.0-284.40.1.el9_2, kernel-debuginfo-common-x86_64 5.14.0-284.40.1.el9_2, kernel-debuginfo-common-aarch64 5.14.0-284.40.1.el9_2, kernel-debuginfo-common-ppc64le 5.14.0-284.40.1.el9_2 Red Hat Enterprise Linux AppStream EUS (v.9.2) perf 5.14.0-284.40.1.el9_2, rtla 5.14.0-284.40.1.el9_2, kernel-devel-matched 5.14.0-284.40.1.el9_2, kernel-64k-devel-matched 5.14.0-284.40.1.el9_2, kernel-debug-devel-matched 5.14.0-284.40.1.el9_2, kernel-debuginfo-common-s390x 5.14.0-284.40.1.el9_2, +5 more
    fixed: vendor fix RHSA-2023:7370
  • Red Hat Enterprise Linux BaseOS (v. 8) perf 4.18.0-348.el8, kernel 4.18.0-348.el8, bpftool 4.18.0-348.el8, kernel-core 4.18.0-348.el8, kernel-tools 4.18.0-348.el8, python3-perf 4.18.0-348.el8, +15 more
    fixed: vendor fix RHSA-2021:4356
  • Red Hat Enterprise Linux BaseOS EUS (v.9.2) bpftool 7.0.0-284.40.1.el9_2, kernel 5.14.0-284.40.1.el9_2, kernel-64k 5.14.0-284.40.1.el9_2, kernel-core 5.14.0-284.40.1.el9_2, kernel-tools 5.14.0-284.40.1.el9_2, python3-perf 5.14.0-284.40.1.el9_2, +28 more
    fixed: vendor fix RHSA-2023:7370
  • Red Hat Enterprise Linux 10 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

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
3 d ago

Exploit prediction

0.25% chance of exploitation in the next 30 days, higher than 17% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected products

  • Linux Linux

Classification

Weakness
  • CWE-401 Missing Release of Memory after Effective Lifetime
Technology feeds

References

Sources

Fencer Vulns 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.