| Name | CVE-2026-59197 |
| Description | Pillow is a Python imaging library. Prior to 12.3.0, Pillow's public rank-filter API can trigger a native heap out-of-bounds write when given a very large odd filter size because ImageFilter.RankFilter.filter() calls image.expand(size // 2, size // 2) before rank-filter size validation and ImagingExpand() computes output dimensions with unchecked signed int arithmetic. This issue is fixed in version 12.3.0. |
| Source | CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| Debian Bugs | 1142274 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| pillow (PTS) | bullseye | 8.1.2+dfsg-0.3+deb11u2 | vulnerable |
| bullseye (security) | 8.1.2+dfsg-0.3+deb11u3 | vulnerable | |
| bookworm, bookworm (security) | 9.4.0-1.1+deb12u1 | vulnerable | |
| trixie | 11.1.0-5+deb13u4 | vulnerable | |
| trixie (security) | 11.1.0-5+deb13u3 | vulnerable | |
| forky, sid | 12.3.0-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| pillow | source | (unstable) | 12.3.0-1 | 1142274 |
[bookworm] - pillow <postponed> (Minor issue)
[bullseye] - pillow <postponed> (Minor issue)
https://github.com/python-pillow/Pillow/security/advisories/GHSA-xj96-63gp-2gmr
https://github.com/python-pillow/Pillow/pull/9695
Fixed by: https://github.com/python-pillow/Pillow/commit/cce3bdb867c77a3420261ed1bfdb6b0787ec8fc1 (12.3.0)