| Name | CVE-2026-2903 |
| Description | A flaw has been found in skvadrik re2c up to 4.4. Impacted is the function check_and_merge_special_rules of the file src/parse/ast.cc. This manipulation causes null pointer dereference. The attack can only be executed locally. The exploit has been published and may be used. Patch name: febeb977936f9519a25d9fbd10ff8256358cdb97. It is suggested to install a patch to address this issue. |
| 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 | 1128782 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| re2c (PTS) | bullseye | 2.0.3-1 | vulnerable |
| bookworm | 3.0-2 | vulnerable |
| trixie | 4.1-1 | vulnerable |
| forky, sid | 4.4-1 | vulnerable |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| re2c | source | (unstable) | (unfixed) | unimportant | | 1128782 |
Notes
https://github.com/skvadrik/re2c/issues/571
Fixed by: https://github.com/skvadrik/re2c/commit/febeb977936f9519a25d9fbd10ff8256358cdb97
Crash im CLI tool, no security impact