CVE-2026-7837

Name	CVE-2026-7837
Description	A time-of-check time-of-use (TOCTOU) condition in the ad_flush function in Netatalk 3.0.0 through 4.4.2 involves root-privileged file operations, which may allow a remote attacker to cause limited data modification under specific race conditions.
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)

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
netatalk (PTS)	bullseye	3.1.12~ds-8+deb11u1	vulnerable
	bullseye (security)	3.1.12~ds-8+deb11u2	vulnerable
	trixie	4.2.3~ds-1+deb13u1	vulnerable
	trixie (security)	4.2.3~ds-1+deb13u2	vulnerable
	forky, sid	4.5.0~ds-3	fixed

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
netatalk	source	(unstable)	4.5.0~ds-1	unimportant

https://netatalk.io/security/CVE-2026-7837
No security impact per upstream assessment