CVE-2026-32288

Name	CVE-2026-32288
Description	tar.Reader can allocate an unbounded amount of memory when reading a maliciously-crafted archive containing a large number of sparse regions encoded in the "old GNU sparse map" format.
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)

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
golang-1.15 (PTS)	bullseye	1.15.15-1~deb11u4	vulnerable
golang-1.19 (PTS)	bookworm	1.19.8-2	vulnerable
golang-1.24 (PTS)	trixie	1.24.4-1	vulnerable
	forky, sid	1.24.13-2	vulnerable
golang-1.25 (PTS)	forky	1.25.8-1	vulnerable
	sid	1.25.9-1	fixed
golang-1.26 (PTS)	forky	1.26.1-1	vulnerable
	sid	1.26.2-1	fixed

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

Package	Type	Release	Fixed Version
golang-1.15	source	(unstable)	(unfixed)
golang-1.19	source	(unstable)	(unfixed)
golang-1.24	source	(unstable)	(unfixed)
golang-1.25	source	(unstable)	1.25.9-1
golang-1.26	source	(unstable)	1.26.2-1

Notes

https://groups.google.com/g/golang-announce/c/0uYbvbPZRWU
https://github.com/golang/go/issues/78301
Fixed by: https://github.com/golang/go/commit/a34b5e4d55e39efc9af0d803969e9399a553acf3 (go1.26.2)
Fixed by: https://github.com/golang/go/commit/82b0cdb7411ea2cf02d3a45e6983cc7c8c009d9e (go1.25.9)