CVE-2025-71129

Name	CVE-2025-71129
Description	In the Linux kernel, the following vulnerability has been resolved: LoongArch: BPF: Sign extend kfunc call arguments The kfunc calls are native calls so they should follow LoongArch calling conventions. Sign extend its arguments properly to avoid kernel panic. This is done by adding a new emit_abi_ext() helper. The emit_abi_ext() helper performs extension in place meaning a value already store in the target register (Note: this is different from the existing sign_extend() helper and thus we can't reuse it).
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
linux (PTS)	bullseye	5.10.223-1	fixed
	bullseye (security)	5.10.247-1	fixed
	bookworm	6.1.159-1	vulnerable
	bookworm (security)	6.1.158-1	vulnerable
	trixie	6.12.63-1	vulnerable
	trixie (security)	6.12.48-1	vulnerable
	forky, sid	6.18.5-1	fixed

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
linux	source	bullseye	(not affected)
linux	source	(unstable)	6.18.5-1

[bullseye] - linux <not-affected> (Vulnerable code not present)
https://git.kernel.org/linus/3f5a238f24d7b75f9efe324d3539ad388f58536e (6.19-rc4)