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Fencer Vulns
high 8.8

CVE-2022-34480 json

Within the <code>lg_init()</code> function, if several allocations succeed but then one fails, an uninitialized pointer would have been fre…

published 2022-12-22 3 y ago modified 2026-06-17 4 mo ago also EUVD-2022-37435

cvss
8.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.6%
EPSS 0.6% chance of exploitation in 30 days, percentile 47%
public exploits
0
none known

Summary

Within the <code>lg_init()</code> function, if several allocations succeed but then one fails, an uninitialized pointer would have been freed despite never being allocated. This vulnerability affects Firefox < 102.

Patch / fix

  • Mozilla Firefox 102
  • nss Ubuntu 18.04 LTS 2:3.35-2ubuntu2.15
  • nss Ubuntu 20.04 LTS 2:3.49.1-1ubuntu1.8
  • nss Ubuntu 22.04 LTS 2:3.68.2-0ubuntu1.1
  • firefox Ubuntu 18.04 LTS 102.0+build2-0ubuntu0.18.04.1
  • firefox Ubuntu 20.04 LTS 102.0+build2-0ubuntu0.20.04.1
  • thunderbird Ubuntu 20.04 LTS 1:102.2.2+build1-0ubuntu0.20.04.1
  • thunderbird Ubuntu 22.04 LTS 1:102.2.2+build1-0ubuntu0.22.04.1
  • nss Ubuntu Pro 14.04 LTS 2:3.28.4-0ubuntu0.14.04.5+esm11

ubuntu advisories UBUNTU-CVE-2022-34480

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

  • MozillaFirefox SLES for SAP 15 SP2, SLES 15 SP2-LTSS, SLES 15 SP2-BCL +10 more 102.3.0-150200.152.61.1
  • MozillaFirefox-branding-SLE SLES for SAP 15 SP2, SLES 15 SP2-LTSS, SLES 15 SP2-BCL +10 more 102-150200.9.10.1
  • MozillaFirefox SLES for SAP 12 SP5, SLES for SAP 12 SP4, SLES 12 SP5 +6 more 102.2.0-112.130.1
  • MozillaFirefox-branding-SLE SLES for SAP 12 SP5, SLES for SAP 12 SP4, SLES 12 SP5 +5 more 102-35.9.1
  • MozillaFirefox SLES for SAP 15 SP1, SLES for SAP 15, SLES 15-LTSS +7 more 102.2.0-150000.150.56.1
  • MozillaFirefox-branding-SLE SLES for SAP 15 SP1, SLES for SAP 15, SLES 15-LTSS +7 more 102-150000.4.22.1

suse advisories SUSE-SU-2022:3396-1SUSE-SU-2022:3273-1SUSE-SU-2022:3272-1

  • firefox-esr openSUSE Tumbleweed 128.5.1-1.1
  • MozillaFirefox openSUSE Tumbleweed 102.0.1-1.1

opensuse advisories openSUSE-SU-2024:14572-1openSUSE-SU-2024:12184-1

  • firefox Alpine 3.23, Alpine 3.22, Alpine 3.21 +4 more 102.0-r0
  • librewolf Alpine 3.24, Alpine 3.23, Alpine 3.22 +1 more 102.0-r0

alpine advisories ALPINE-CVE-2022-34480

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-2022-34480 updated cvss 7.0

firefox: Free of uninitialized pointer in lg_init

  • Red Hat Enterprise Linux 6 firefox Red Hat Enterprise Linux 7 firefox Red Hat Enterprise Linux 8 firefox Red Hat Enterprise Linux 9 firefox, firefox-x11, firefox-flatpak-container Red Hat Enterprise Linux 10 firefox, firefox-flatpak-container
    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
total
Assessed
18 mo ago

Exploit prediction

0.58% chance of exploitation in the next 30 days, higher than 47% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CISA ADP 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CNA 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected products

  • Mozilla Firefox

Classification

Weakness
  • CWE-824 Access of Uninitialized Pointer

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.