CVE-2026-98218

Name	CVE-2026-98218
Description	In the Linux kernel, the following vulnerability has been resolved: i2c: atr: fix dangling adapter pointer on add failure i2c_atr_add_adapter() stores atr->adapter[chan_id] before i2c_add_adapter() so that the I2C bus notifier can match child clients during registration. On failure the channel is freed but the slot was left pointing at freed memory, which can lead to use-after-free in i2c_atr_del_adapter() / cleanup and also block reuse with -EEXIST. Clear the slot on the i2c_add_adapter() error path before freeing chan.
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, DSA-6568-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
linux (PTS)	bookworm	6.1.176-1	fixed
	bookworm (security)	6.1.190-1	fixed
	trixie	6.12.107-1	vulnerable
	trixie (security)	6.12.113-1	fixed
	forky, sid	7.2.12-1	fixed
linux-6.12 (PTS)	bookworm (security)	6.12.113-1~deb12u1	fixed

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

Package	Type	Release	Fixed Version	Origin
linux	source	bookworm	(not affected)
linux	source	trixie	6.12.113-1	DSA-6568-1
linux	source	(unstable)	7.2.8-1
linux-6.12	source	bookworm	6.12.113-1~deb12u1	DLA-4850-1

[bookworm] - linux <not-affected> (Vulnerable code not present)
https://git.kernel.org/linus/ad34235808b63a70ca4989b7a2852923193d06ef (7.3-rc4)