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TI-2022-18098 Aliases CVE-2022-38476GHSA-mj64-2668-m2rv

Use after free in Mozilla Firefox ESR

Priority LOW 36CWE-416Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
High
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Partial Red Hat: 11 fixed, 1 without a fix

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and Red Hat. Impact type from CWE-416 and the CVSS impact.

Summary

A data race could occur in the <code>PK11_ChangePW</code> function, potentially leading to a use-after-free vulnerability. In Firefox, this lock protected the data when a user changed their master password. This vulnerability affects Firefox ESR < 102.2 and Thunderbird < 102.2.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00859 58th percentileScored 2026-11-07
Fix Partial Firefox ESR (Mozilla): 102.2Thunderbird (Mozilla): 102.2Red Hat: 12 advisoriesRed Hat: 11 fixed, 1 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
MozillaFirefox ESRbefore 102.2102.2Patch availableCNA
MozillaThunderbirdbefore 102.2102.2Patch availableCNA
  • Firefox ESR VendorMozilla Affected before 102.2 Fixed in 102.2 Patch available CNA
  • Thunderbird VendorMozilla Affected before 102.2 Fixed in 102.2 Patch available CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*before 102.2VulnerableMozilla
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*before 102.2VulnerableMozilla
  • cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:* Versions before 102.2 Vulnerable ·Mozilla
  • cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* Versions before 102.2 Vulnerable ·Mozilla

Remediation

  • Fix · CNA Firefox ESR (Mozilla) Fixed in 102.2
  • Fix · CNA Thunderbird (Mozilla) Fixed in 102.2

Red Hat 12 advisories

  • RHSA-2022:6179 Released 2022-08-24 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux Client (v. 7) firefox-91.13.0-1.el7_9
    • Red Hat Enterprise Linux Client Optional (v. 7) firefox-91.13.0-1.el7_9
    • Red Hat Enterprise Linux Server (v. 7) firefox-91.13.0-1.el7_9
    • Red Hat Enterprise Linux Server Optional (v. 7) firefox-91.13.0-1.el7_9
    • Red Hat Enterprise Linux Workstation (v. 7) firefox-91.13.0-1.el7_9
    • Red Hat Enterprise Linux Workstation Optional (v. 7) firefox-91.13.0-1.el7_9
  • RHSA-2022:6169 Released 2022-08-24 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux Client (v. 7) thunderbird-91.13.0-1.el7_9
    • Red Hat Enterprise Linux Server Optional (v. 7) thunderbird-91.13.0-1.el7_9
    • Red Hat Enterprise Linux Workstation (v. 7) thunderbird-91.13.0-1.el7_9
  • RHSA-2022:6177 Released 2022-08-24 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux AppStream EUS (v. 8.2) firefox-91.13.0-1.el8_2
Show 9 more Red Hat advisories
  • RHSA-2022:6164 Released 2022-08-24 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux AppStream (v. 8) thunderbird-91.13.0-1.el8_6
  • RHSA-2022:6175 Released 2022-08-24 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux AppStream (v. 8) firefox-91.13.0-1.el8_6
  • RHSA-2022:6174 Released 2022-08-24 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux AppStream (v. 9) firefox-91.13.0-1.el9_0
  • RHSA-2022:6178 Released 2022-08-24 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux AppStream E4S (v. 8.1) firefox-91.13.0-1.el8_1
  • RHSA-2022:6176 Released 2022-08-24 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux AppStream EUS (v.8.4) firefox-91.13.0-1.el8_4
  • RHSA-2022:6168 Released 2022-08-24 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux AppStream EUS (v. 8.2) thunderbird-91.13.0-1.el8_2
  • RHSA-2022:6167 Released 2022-08-24 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux AppStream E4S (v. 8.1) thunderbird-91.13.0-1.el8_1
  • RHSA-2022:6166 Released 2022-08-24 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux AppStream EUS (v.8.4) thunderbird-91.13.0-1.el8_4
  • RHSA-2022:6165 Released 2022-08-24 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux AppStream (v. 9) thunderbird-91.13.0-1.el9_0

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    Mozilla Firefox ESR, Thunderbird 102.2

    2 records Highest priority Priority MEDIUM 1 MEDIUM, 1 LOW

    Other records, highest priority first

    • TI-2022-18099 Out-of-bounds write in Mozilla Firefox ESRPriority MEDIUM 42
    Show all 2 records →

Vendor assessments

Red Hat

Red Hat rating: Low. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux 6AffectedNo fix planned: Out of support scope
Red Hat Enterprise Linux AppStream (v. 8)Fixed RHSA-2022:6164, RHSA-2022:6175
Red Hat Enterprise Linux AppStream (v. 9)Fixed RHSA-2022:6165, RHSA-2022:6174
Red Hat Enterprise Linux AppStream E4S (v. 8.1)Fixed RHSA-2022:6167, RHSA-2022:6178
Red Hat Enterprise Linux AppStream EUS (v. 8.2)Fixed RHSA-2022:6168, RHSA-2022:6177
Red Hat Enterprise Linux AppStream EUS (v.8.4)Fixed RHSA-2022:6166, RHSA-2022:6176
Red Hat Enterprise Linux Client (v. 7)Fixed RHSA-2022:6169, RHSA-2022:6179
Red Hat Enterprise Linux Client Optional (v. 7)Fixed RHSA-2022:6179
Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2022:6179
Red Hat Enterprise Linux Server Optional (v. 7)Fixed RHSA-2022:6169, RHSA-2022:6179
Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2022:6169, RHSA-2022:6179
Red Hat Enterprise Linux Workstation Optional (v. 7)Fixed RHSA-2022:6179

Timeline

  1. 2026-10-02 Threatist record created from CVE-2022-38476
  2. 2026-10-03 Alias added: GHSA-mj64-2668-m2rv

References

Advisory 3

  • TI-2022-15364 Use after free in Mozilla Firefox CVSS 3.1CRITICAL 9.8
  • TI-2022-13633 Out-of-bounds write in Mozilla Thunderbird CVSS 3.1CRITICAL 9.8
  • TI-2021-03015 XML injection in Mozilla Firefox ESR CVSS 3.1CRITICAL 10.0
  • TI-2022-09755 Protection mechanism failure in Mozilla Firefox CVSS 3.1CRITICAL 9.6
  • TI-2022-07009 Protection mechanism failure in Mozilla Firefox CVSS 3.1CRITICAL 9.6
  • TI-2023-18834 Use after free in Mozilla Firefox CVSS 3.1HIGH 8.8
See all 486 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences