CVE-2026-95702

Name	CVE-2026-95702
Description	Use-after-free vulnerability in VFS in Google gVisor prior to release 20260831.0 on all platforms allows a local attacker with standard container privileges to achieve code execution in the host sentry process by double-freeing the backing MemoryFile from an in-sandbox overlay filesystem. The sentry process remains confined by host-level Linux seccomp and namespace boundaries.
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)
Debian Bugs	1150510

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
golang-gvisor-gvisor (PTS)	bookworm	0.0~20221219.0-2	vulnerable
	trixie	0.0~20240729.0-4	vulnerable
	forky, sid	0.0~20240729.0-7	vulnerable

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
golang-gvisor-gvisor	source	(unstable)	(unfixed)			1150510

Notes

[trixie] - golang-gvisor-gvisor <no-dsa> (Minor issue)
Fixed by: https://github.com/google/gvisor/commit/90bc4fc36fe442257a06ba15df00371561c183ed (release-20260831.0)
Fixed by: https://github.com/google/gvisor/commit/25c75149bc0eeaa6a3a49b9bbe3473588b2af6df (release-20260824.0)
Fixed by: https://github.com/google/gvisor/commit/e4efb89c787ef15b09e68d561f1303380e1d5a77 (release-20260831.0)