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CVE-2024-43888

mm: list_lru: fix UAF for memory cgroup

Published: 8/26/2024 Last updated: 5/11/2026 Reserved: 8/17/2024

In the Linux kernel, the following vulnerability has been resolved: mm: list_lru: fix UAF for memory cgroup The mem_cgroup_from_slab_obj() is supposed to be called under rcu lock or cgroup_mutex or others which could prevent returned memcg from being freed. Fix it by adding missing rcu read lock. Found by code inspection. [songmuchun@bytedance.com: only grab rcu lock when necessary, per Vlastimil]

CNA assigner: Linux (416baaa9-dc9f-4396-8d5f-8c081fb06d67) Requested by: n/a

Opam packages affected (29)

albatross cdrom conf-bpftool conf-libbpf conf-linux-libc-dev core core_unix hvsock mirage-block-unix mm ocaml-probes ortools_solvers orun rawlink rawlink-eio rawlink-lwt restricted shell solo5 solo5-bindings-hvt solo5-bindings-spt solo5-cross-aarch64 solo5-kernel-ukvm tracy-client tuntap uring vhd-format vhd-format-lwt xapi-stdext-unix

Products affected (4)

Product Vendor Version
Linux Linux 2010 Service Pack 2 (64-bit editions)
Linux Linux 2013 Service Pack 1 (32-bit editions)
Linux Linux SIMATIC WinCC Sm@rtClient for Android, SIMATIC WinCC Sm@rtClient Lite for Android
Linux Linux n/a

References (4)