| Name | CVE-2026-17544 |
| Description | Attacker-provided inputs to bccomp() could lead to an out-of-bounds write with stack and heap corruption in PHP versions from 8.4.* before 8.4.24 and from 8.5.* before 8.5.9. |
| 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) |
| References | DSA-6406-1 |
| Debian Bugs | 1143153 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| php7.4 (PTS) | bullseye | 7.4.33-1+deb11u5 | vulnerable |
| bullseye (security) | 7.4.33-1+deb11u11 | vulnerable |
| php8.2 (PTS) | bookworm, bookworm (security) | 8.2.32-1~deb12u1 | vulnerable |
| php8.4 (PTS) | trixie | 8.4.23-1~deb13u1 | vulnerable |
| trixie (security) | 8.4.24-1~deb13u1 | fixed |
| forky | 8.4.23-1 | vulnerable |
| sid | 8.4.24-1 | fixed |
The information below is based on the following data on fixed versions.
Notes
https://github.com/php/php-src/security/advisories/GHSA-x692-q9x7-8c3f
Fixed by: https://github.com/php/php-src/commit/fa18dab73f9340448c0d5c0a1d75d3fec844b358 (php-8.4.24)