CVE-2026-2903

EUVD-2026-7705
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
3.3 LOW
LOCAL
LOW
LOW
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Awaiting analysis
This vulnerability is currently awaiting analysis.
Base Score
CVSS 3.x
EPSS Score
Percentile: 1.65%
Debian logo
Debian Releases
Debian Product
Codename
re2c
bookworm
unimportant
bullseye
unimportant
forky
4.5.1-1
fixed
sid
4.5.1-1
fixed
trixie
unimportant
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
re2c
bionic
not-affected
focal
not-affected
jammy
needed
noble
needed
questing
ignored
resolute
needed
trusty
not-affected
xenial
not-affected
Common Weakness Enumeration
References
https://github.com/oneafter/0202/blob/main/re/repro
https://github.com/skvadrik/re2c/
https://github.com/skvadrik/re2c/commit/febeb977936f9519a25d9fbd10ff8256358cdb97
https://github.com/skvadrik/re2c/issues/571
https://github.com/skvadrik/re2c/issues/571#issuecomment-3837675101
https://vuldb.com/?ctiid.347210
https://vuldb.com/?id.347210
https://vuldb.com/?submit.755030