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Fencer Intel
critical 9.6

CVE-2022-26486 kev in the critical feed json

An unexpected message in the WebGPU IPC framework could lead to a use-after-free and exploitable sandbox escape.

published 3y ago modified 2mo ago also EUVD-2022-31044

cvss
9.6
version 3.1, CNA
cisa kev
Exploited
added 2022-03-07
epss
2.4%
EPSS 2.4% chance of exploitation in 30 days, percentile 83%
public exploits
0
none known

Summary

An unexpected message in the WebGPU IPC framework could lead to a use-after-free and exploitable sandbox escape. We have had reports of attacks in the wild abusing this flaw. This vulnerability affects Firefox < 97.0.2, Firefox ESR < 91.6.1, Firefox for Android < 97.3.0, Thunderbird < 91.6.2, and Focus < 97.3.0.

Patch / fix

cisa required action Apply updates per vendor instructions.

  • Mozilla Firefox 97.0.2
  • Mozilla Firefox ESR 91.6.1
  • Mozilla Firefox for Android 97.3.0
  • Mozilla Thunderbird 91.6.2
  • Mozilla Focus 97.3.0
  • firefox-esr Debian 14, Debian 13, Debian 12 91.6.1esr-1
  • thunderbird Debian 14, Debian 13, Debian 12 1:91.6.2-1

debian advisories DEBIAN-CVE-2022-26486

  • firefox Ubuntu 18.04 LTS 97.0.2+build1-0ubuntu0.18.04.1
  • firefox Ubuntu 20.04 LTS 97.0.2+build1-0ubuntu0.20.04.1
  • firefox Ubuntu 22.04 LTS 1:1snap1-0ubuntu1

ubuntu advisories UBUNTU-CVE-2022-26486

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

  • thunderbird RHEL 8 91.7.0-2.el8_5
  • thunderbird RHEL 7 91.7.0-2.el7_9
  • firefox RHEL 8 91.7.0-3.el8_5
  • firefox RHEL 7 91.7.0-3.el7_9
  • thunderbird RHEL 8.1 E4S 91.7.0-2.el8_1
  • thunderbird RHEL 8.2 EUS 91.7.0-2.el8_2
  • thunderbird RHEL 8.4 EUS 91.7.0-2.el8_4
  • firefox RHEL 8.4 EUS 91.7.0-3.el8_4

red hat advisories RHSA-2022:0847RHSA-2022:0845RHSA-2022:0850RHSA-2022:0843RHSA-2022:0853RHSA-2022:0817

  • MozillaThunderbird SLE Workstation Extension 15 SP3, SLE Module for Package Hub 15 SP3 91.6.2-8.59.1
  • MozillaFirefox SLES for SAP 15 SP2, SLES 15 SP2-LTSS, SLES 15 SP2-BCL +8 more 91.6.1-152.19.1
  • MozillaFirefox SLES for SAP 15 SP1, SLES for SAP 15, SLES 15-LTSS +7 more 91.6.1-150.21.1
  • MozillaFirefox SLES for SAP 12 SP5, SLES for SAP 12 SP4, SLES for SAP 12 SP3 +11 more 91.6.1-112.92.1
  • MozillaFirefox SLES 11 SP4-LTSS 91.7.0-78.167.1

suse advisories SUSE-SU-2022:14906-1SUSE-SU-2022:0804-1SUSE-SU-2022:0783-1SUSE-SU-2022:0778-1SUSE-SU-2022:0777-1

  • MozillaThunderbird openSUSE Tumbleweed 91.7.0-1.1
  • MozillaThunderbird openSUSE Leap 15.3 91.6.2-8.59.1
  • MozillaFirefox openSUSE Leap 15.3 91.6.1-152.19.1

opensuse advisories openSUSE-SU-2024:11909-1openSUSE-SU-2022:0804-1openSUSE-SU-2022:0783-1

  • thunderbird AlmaLinux 8 91.7.0-2.el8_5.alma
  • thunderbird AlmaLinux 8 91.7.0-2.el8_5.alma.plus
  • firefox AlmaLinux 8 91.7.0-3.el8_5.alma

almalinux advisories ALSA-2022:0845ALSA-2022:0818

  • thunderbird Rocky Linux 8 91.7.0-2.el8_5
  • firefox Rocky Linux 8 91.7.0-3.el8_5

rocky linux advisories RLSA-2022:0845RLSA-2022:0818

  • firefox Alpine 3.23, Alpine 3.22, Alpine 3.21 +5 more 97.0.2-r0
  • librewolf Alpine 3.24, Alpine 3.23, Alpine 3.22 +1 more 97.0.2-r0
  • firefox-esr Alpine 3.23, Alpine 3.22, Alpine 3.21 +6 more 91.6.1-r0
  • thunderbird Alpine 3.23, Alpine 3.22, Alpine 3.21 +5 more 91.6.2-r0

alpine advisories ALPINE-CVE-2022-26486

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

Is CVE-2022-26486 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

Check with Fencer

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-2022-26486 updated cvss 8.8

Mozilla: Use-after-free in WebGPU IPC Framework

  • Red Hat Enterprise Linux 6 firefox, thunderbird
    affected: no fix planned “Out of support scope”
  • Red Hat Enterprise Linux 8 firefox, thunderbird
    affected: no fix available
  • Red Hat Enterprise Linux AppStream (v. 8) firefox 91.7.0-3.el8_5, thunderbird 91.7.0-2.el8_5
    fixed: vendor fix RHSA-2022:0818
  • Red Hat Enterprise Linux AppStream E4S (v. 8.1) firefox 91.7.0-3.el8_1, thunderbird 91.7.0-2.el8_1
    fixed: vendor fix RHSA-2022:0815
  • Red Hat Enterprise Linux AppStream EUS (v. 8.2) firefox 91.7.0-3.el8_2, thunderbird 91.7.0-2.el8_2
    fixed: vendor fix RHSA-2022:0816
  • Red Hat Enterprise Linux AppStream EUS (v.8.4) firefox 91.7.0-3.el8_4, thunderbird 91.7.0-2.el8_4
    fixed: vendor fix RHSA-2022:0817
  • Red Hat Enterprise Linux Client (v. 7) firefox 91.7.0-3.el7_9, thunderbird 91.7.0-2.el7_9 Red Hat Enterprise Linux Client Optional (v. 7) firefox 91.7.0-3.el7_9 Red Hat Enterprise Linux Server (v. 7) firefox 91.7.0-3.el7_9 Red Hat Enterprise Linux Server Optional (v. 7) firefox 91.7.0-3.el7_9, thunderbird 91.7.0-2.el7_9 Red Hat Enterprise Linux Workstation (v. 7) firefox 91.7.0-3.el7_9, thunderbird 91.7.0-2.el7_9 Red Hat Enterprise Linux Workstation Optional (v. 7) firefox 91.7.0-3.el7_9
    fixed: vendor fix RHSA-2022:0824
  • Red Hat Enterprise Linux 9 firefox, firefox-x11, thunderbird
    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

Timeline

  1. 0-day patched (Project Zero)
  2. Added to CISA KEV
  3. CISA patch deadline
  4. Published
  5. CISA SSVC: exploitation active

Known exploited

Added
4y ago
Patch by
2022-03-21 (4y ago)
Ransomware
Not known
Required action
Apply updates per vendor instructions.
Vendor, product
Mozilla, Firefox
CISA name
Mozilla Firefox Use-After-Free Vulnerability

Zero-day

Detected in real attacks while still unknown to the vendor and the public, per Google Project Zero's 0day In-the-Wild tracker.

Patched
2022-03-05
Details
project zero tracker

CISA SSVC

Exploitation
Active, exploited in the wild
Automatable
no
Technical impact
total
Assessed
last yr.

Exploit prediction

2.36% chance of exploitation in the next 30 days, higher than 83% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • mozilla.org https://www.mozilla.org/security/advisories/mfsa2022-09/ referenced PoC, tagged "exploit" by a source, unverified
  • bugzilla.mozilla.org https://bugzilla.mozilla.org/show_bug.cgi?id=1758070 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CISA ADP 3.1 9.6 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
NVD 3.1 9.6 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
CNA 3.1 9.6 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

Affected products

  • Mozilla Firefox
  • Mozilla Firefox ESR
  • Mozilla Firefox for Android
  • Mozilla Thunderbird
  • Mozilla Focus

Classification

Weakness

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.