CVE-2026-42311
Description
Pillow has an OOB Write with Invalid PSD Tile Extents (Integer Overflow)
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2026-42311
Vendor advisory: security-advisories@github.com — https://github.com/python-pillow/Pillow/security/advisories/GHSA-pwv6-vv43-88gr
Vendor advisory: security-advisories@github.com — https://github.com/python-pillow/Pillow/releases/tag/12.2.0
Vendor advisory: security-advisories@github.com — https://github.com/python-pillow/Pillow/pull/9520
Vendor advisory: security-advisories@github.com — https://github.com/python-pillow/Pillow/commit/58f9a1d166dcb0c274807d4423522d205b0c35ea
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| debian | bookworm | fixed | 0 |
| debian | bullseye | fixed | 0 |
| debian | forky | fixed | 12.2.0-1 |
| debian | sid | fixed | 12.2.0-1 |
| debian | trixie | affected | |
Application impact
| Vendor | Product | Versions | Fixed |
|---|---|---|---|
| python | pillow | {"startIncluding":"10.3.0","endExcluding":"12.2.0"} | 12.2.0 |
References
- https://github.com/python-pillow/Pillow/commit/58f9a1d166dcb0c274807d4423522d205b0c35ea
- https://github.com/python-pillow/Pillow/pull/9520
- https://github.com/python-pillow/Pillow/releases/tag/12.2.0
- https://github.com/python-pillow/Pillow/security/advisories/GHSA-pwv6-vv43-88gr
- https://github.com/python-pillow/Pillow/security/advisories/GHSA-cfh3-3jmp-rvhc
- https://nvd.nist.gov/vuln/detail/CVE-2026-42311
- https://github.com/python-pillow/Pillow
- https://security-tracker.debian.org/tracker/CVE-2026-42311
- https://github.com/advisories/GHSA-pwv6-vv43-88gr
CWEs
CWE-190 CWE-787
Verify integrity in audit chain (admin only). AS-IS.