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

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

• mozilla firefoxbefore 91.6.1
• mozilla firefoxbefore 97.0.2
• mozilla firefox focusbefore 97.3.0
• mozilla firefox mobilebefore 97.3.0
• mozilla thunderbirdbefore 91.6.2

Versions reported by the vendor

Affected version ranges reported by the assigning authority (mozilla). Independent of NVD's CPE analysis and usually ahead of it.

• Mozilla Firefox

  • unspecified and later · before 97.0.2affected

• Mozilla Firefox ESR

  • unspecified and later · before 91.6.1affected

• Mozilla Firefox for Android

  • unspecified and later · before 97.3.0affected

• Mozilla Focus

  • unspecified and later · before 97.3.0affected

• Mozilla Thunderbird

  • unspecified and later · before 91.6.2affected

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

Other highest-scoring records for the same primary product.

• CVE-2010-3765Mozilla Firefox 3.5.x through 3.5.14 and 3.6.x through 3.6.11, Thunderbird 3.1.6 before 3.1.6 and 3.0.x before 3.0.10, and SeaMonkey 2.x befKEV
  94Now
• CVE-2019-11708Insufficient vetting of parameters passed with the Prompt:Open IPC message between child and parent processes can result in the non-sandboxeKEV
  87Now
• CVE-2015-4495The PDF reader in Mozilla Firefox before 39.0.3, Firefox ESR 38.x before 38.1.1, and Firefox OS before 2.2 allows remote attackers to bypassKEV
  86Now

Published before and after this one in the same product

• ← EarlierCVE-2022-26387Dec 22, 2022 · When installing an add-on, Firefox verified the signature before prompting the user; but while the user was confirming the prompt, the under
  30Monitor
• ← EarlierCVE-2022-26485Dec 22, 2022 · Removing an XSLT parameter during processing could have lead to an exploitable use-after-free.KEV
  69This week
• Later →CVE-2022-28281Dec 22, 2022 · If a compromised content process sent an unexpected number of WebAuthN Extensions in a Register command to the parent process, an out of bou
  36Monitor

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Root cause

After a memory region is freed, another reference pointing to it is still used. By then, the same region may have been allocated for different data.

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

1free(dev->buf);2/* ... another thread is still running ... */3process(dev->buf);

1lock(&dev->lock);2free(dev->buf);3dev->buf = NULL;4unlock(&dev->lock);

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.