CVE-2025-5915

Name	CVE-2025-5915
Description	A vulnerability has been identified in the libarchive library. This flaw can lead to a heap buffer over-read due to the size of a filter block potentially exceeding the Lempel-Ziv-Storer-Schieber (LZSS) window. This means the library may attempt to read beyond the allocated memory buffer, which can result in unpredictable program behavior, crashes (denial of service), or the disclosure of sensitive information from adjacent memory regions.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
Debian Bugs	1107622

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, bookworm (security)	3.6.2-1+deb12u2	vulnerable
	trixie, sid	3.7.4-3	vulnerable

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
libarchive	source	(unstable)	(unfixed)			1107622

Notes

[bookworm] - libarchive <no-dsa> (Minor issue)
[bullseye] - libarchive <postponed> (Minor issue)
https://github.com/libarchive/libarchive/pull/2599
Fixed by: https://github.com/libarchive/libarchive/commit/a612bf62f86a6faa47bd57c52b94849f0a404d8c (v3.8.0)