CVE-2025-5917

Name	CVE-2025-5917
Description	A vulnerability has been identified in the libarchive library. This flaw involves an 'off-by-one' miscalculation when handling prefixes and suffixes for file names. This can lead to a 1-byte write overflow. While seemingly small, such an overflow can corrupt adjacent memory, leading to unpredictable program behavior, crashes, or in specific circumstances, could be leveraged as a building block for more sophisticated exploitation.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
Debian Bugs	1107626

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
libarchive (PTS)	bullseye	3.4.3-2+deb11u1	vulnerable
	bullseye (security)	3.4.3-2+deb11u2	vulnerable
	bookworm	3.6.2-1+deb12u3	fixed
	bookworm (security)	3.6.2-1+deb12u2	vulnerable
	forky, sid, trixie	3.7.4-4	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
libarchive	source	bookworm	3.6.2-1+deb12u3
libarchive	source	(unstable)	3.7.4-4			1107626

Notes

[bullseye] - libarchive <postponed> (Minor issue)
https://github.com/libarchive/libarchive/pull/2588
Fixed by: https://github.com/libarchive/libarchive/commit/7c02cde37a63580cd1859183fbbd2cf04a89be85 (v3.8.0)