| Name | CVE-2026-7568 |
| Description | In PHP versions 8.2.* before 8.2.31, 8.3.* before 8.3.31, 8.4.* before 8.4.21, and 8.5.* before 8.5.6, the metaphone() function in ext/standard/metaphone.c uses a signed int variable to track the current position within the input string. If a string longer than 2,147,483,647 bytes is passed, a signed integer overflow occurs, resulting in undefined behavior. This can lead to an out-of-bounds read, causing a segmentation fault or access to unrelated memory, and may affect the availability of the PHP process. |
| 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 | DLA-4586-1, DSA-6255-1, DSA-6256-1 |
| Debian Bugs | 1136054 |
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 | fixed | |
| php8.2 (PTS) | bookworm, bookworm (security) | 8.2.31-1~deb12u1 | fixed |
| php8.4 (PTS) | trixie | 8.4.16-1~deb13u1 | vulnerable |
| trixie (security) | 8.4.21-1~deb13u1 | fixed | |
| forky, sid | 8.4.21-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| php7.4 | source | bullseye | 7.4.33-1+deb11u11 | DLA-4586-1 | ||
| php7.4 | source | (unstable) | (unfixed) | |||
| php8.2 | source | bookworm | 8.2.31-1~deb12u1 | DSA-6255-1 | ||
| php8.2 | source | (unstable) | (unfixed) | |||
| php8.4 | source | trixie | 8.4.21-1~deb13u1 | DSA-6256-1 | ||
| php8.4 | source | (unstable) | 8.4.21-1 | 1136054 |
https://github.com/php/php-src/security/advisories/GHSA-96wq-48vp-hh57
https://github.com/php/php-src/commit/47def8ce1db1fdbffcfc1f5bb11877a0e22d4b32