CVE-2026-98754

Name	CVE-2026-98754
Description	In the Linux kernel, the following vulnerability has been resolved: tty: vcc: hold port lock when clearing tty pointer in vcc_cleanup vcc_cleanup() sets port->tty to NULL without holding port->lock, racing with vcc_event() LDC callbacks that read port->tty under port->lock and then use tty->port. This can cause a use-after-free when the callback dereferences tty->port after cleanup has already destroyed and freed 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)
References	DLA-4850-1

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)	6.1.190-1	vulnerable
	trixie	6.12.107-1	vulnerable
	trixie (security)	6.12.115-2	fixed
	forky	7.2.15-1	fixed
	sid	7.3.3-1	fixed
linux-6.12 (PTS)	bookworm (security)	6.12.115-2~deb12u1	fixed

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

Package	Type	Release	Fixed Version	Origin
linux	source	trixie	6.12.113-1
linux	source	(unstable)	7.2.10-1
linux-6.12	source	bookworm	6.12.113-1~deb12u1	DLA-4850-1

https://git.kernel.org/linus/03b49c991abb8d021ca6fe51cd173447236b0552 (7.3-rc6)