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Fencer Vulns
medium 5.5

CVE-2021-46022 json

An Use-After-Free vulnerability in rec_mset_elem_destroy() at rec-mset.c of GNU Recutils v1.8.90 can lead to a segmentation fault or applic…

published 2022-01-14 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-32728

cvss
5.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.0%
EPSS 1.0% chance of exploitation in 30 days, percentile 64%
public exploits
0
none known

Summary

An Use-After-Free vulnerability in rec_mset_elem_destroy() at rec-mset.c of GNU Recutils v1.8.90 can lead to a segmentation fault or application crash.

Patch / fix

  • recutils Ubuntu Pro 16.04 LTS 1.7-1ubuntu0.1~esm1
  • recutils Ubuntu Pro 18.04 LTS 1.7-2ubuntu0.1~esm1
  • recutils Ubuntu Pro 20.04 LTS 1.8-1ubuntu0.20.04.1~esm1
  • recutils Ubuntu Pro 22.04 LTS 1.8-1ubuntu0.22.04.1~esm1

ubuntu advisories UBUNTU-CVE-2021-46022

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

  • recutils Alpine 3.24, Alpine 3.23, Alpine 3.22 +6 more 1.9-r0

alpine advisories ALPINE-CVE-2021-46022

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

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-2021-46022 updated cvss 5.5

recutils: use-after-free in rec_mset_elem_destroy() at rec-mset.c may lead to DoS

  • Red Hat All currently supported Red Hat products
    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

1.04% chance of exploitation in the next 30 days, higher than 64% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • lists.gnu.org https://lists.gnu.org/archive/html/bug-recutils/2021-12/msg00007.html referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:N/I:N/A:P

Classification

Weakness

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.