CVE-2026-100082

Name	CVE-2026-100082
Description	In the Linux kernel, the following vulnerability has been resolved: xen-blkback: Avoid UAF when reading I/O statistics Reading I/O statistics via sysfs concurrently with tearing down a frontend device might result in UAF or a NULL dereference, as the reading of the statistics data is not synchronized with freeing the data. Use a rwlock for synchronizing. This is XSA-528 / CVE-2026-100082
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)
References	DLA-4906-1, DSA-6616-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
linux (PTS)	bookworm	6.1.176-1	vulnerable
	bookworm (security)	6.1.192-1	fixed
	trixie	6.12.107-1	vulnerable
	trixie (security)	6.12.117-1	fixed
	forky	7.2.15-1	vulnerable
	sid	7.3.4-1	fixed

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

Package	Type	Release	Fixed Version	Origin
linux	source	bookworm	6.1.192-1	DLA-4906-1
linux	source	trixie	6.12.116-1	DSA-6616-1
linux	source	(unstable)	7.3.3-1

https://xenbits.xen.org/xsa/advisory-528.html