CVE-2026-79607

NameCVE-2026-79607
DescriptionDuring Xenstore live update the state record for a Xenstore watch with specified watch depth is written with two bytes missing. This results in an inconsistent state when reading the state back in the new Xenstore, causing a crash of Xenstore or wrong Xenstore data.
SourceCVE (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 PackageReleaseVersionStatus
xen (PTS)bookworm4.17.5+72-g01140da4e8-1vulnerable
bookworm (security)4.17.7-0+deb12u1vulnerable
trixie (security), trixie4.20.3+127-gc42374a105-0+deb13u1vulnerable
forky, sid4.20.3+127-gc42374a105-1vulnerable

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
xensource(unstable)(unfixed)

Notes

https://xenbits.xen.org/xsa/advisory-514.html
Search for package or bug name: Reporting problems