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.

References

https://vuldb.com/?submit.755030

https://vuldb.com/?id.347210

https://vuldb.com/?ctiid.347210

https://github.com/skvadrik/re2c/issues/571#issuecomment-3837675101

https://github.com/skvadrik/re2c/issues/571

https://github.com/skvadrik/re2c/commit/febeb977936f9519a25d9fbd10ff8256358cdb97

https://github.com/skvadrik/re2c/

https://github.com/oneafter/0202/blob/main/re/repro

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3

CVSS v4