CVE-2024-53685

Name	CVE-2024-53685
Description	In the Linux kernel, the following vulnerability has been resolved: ceph: give up on paths longer than PATH_MAX If the full path to be built by ceph_mdsc_build_path() happens to be longer than PATH_MAX, then this function will enter an endless (retry) loop, effectively blocking the whole task. Most of the machine becomes unusable, making this a very simple and effective DoS vulnerability. I cannot imagine why this retry was ever implemented, but it seems rather useless and harmful to me. Let's remove it and fail with ENAMETOOLONG instead.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
References	DLA-4075-1, DLA-4076-1, DSA-5860-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
linux (PTS)	bullseye	5.10.223-1	vulnerable
	bullseye (security)	5.10.234-1	fixed
	bookworm	6.1.129-1	fixed
	bookworm (security)	6.1.133-1	fixed
	trixie	6.12.21-1	fixed
	sid	6.12.22-1	fixed
linux-6.1 (PTS)	bullseye (security)	6.1.129-1~deb11u1	fixed

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

Package	Type	Release	Fixed Version	Origin
linux	source	bullseye	5.10.234-1	DLA-4075-1
linux	source	bookworm	6.1.128-1	DSA-5860-1
linux	source	(unstable)	6.12.8-1
linux-6.1	source	bullseye	6.1.128-1~deb11u1	DLA-4076-1

https://git.kernel.org/linus/550f7ca98ee028a606aa75705a7e77b1bd11720f (6.13-rc4)