CVE-2025-55159

Name	CVE-2025-55159
Description	slab is a pre-allocated storage for a uniform data type. In version 0.4.10, the get_disjoint_mut method incorrectly checked if indices were within the slab's capacity instead of its length, allowing access to uninitialized memory. This could lead to undefined behavior or potential crashes. This has been fixed in slab 0.4.11. A workaround for this issue involves to avoid using get_disjoint_mut with indices that might be beyond the slab's actual length.
Source	CVE (at NVD; CERT, 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
rust-slab (PTS)	bullseye	0.4.1-1	fixed
	bookworm	0.4.4-1	fixed
	forky, sid, trixie	0.4.9-1	fixed

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
rust-slab	source	(unstable)	(not affected)

Notes

- rust-slab <not-affected> (Vulnerable code not present)
https://github.com/tokio-rs/slab/security/advisories/GHSA-qx2v-8332-m4fv
https://github.com/tokio-rs/slab/pull/152
Introduced by: https://github.com/tokio-rs/slab/commit/f801afe5cb2379b0178173758273a95f64510527 (v0.4.10)
Fixed by: https://github.com/tokio-rs/slab/commit/2d65c514bc964b192bab212ddf3c1fcea4ae96b8 (v0.4.11)