CVE-2024-43888: mm: list_lru: fix UAF for memory cgroup
First published: Mon Aug 26 2024(Updated: )
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: only grab rcu lock when necessary, per Vlastimil] Link: <a href="https://lkml.kernel.org/r/20240801024603.1865-1-songmuchun@bytedance.com">https://lkml.kernel.org/r/20240801024603.1865-1-songmuchun@bytedance.com</a>
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Linux kernel | >=6.8<6.10.5 | |
| Linux Linux kernel | =6.11-rc1 | |
| Linux Linux kernel | =6.11-rc2 | |
| debian/linux | 5.10.223-1 5.10.226-1 6.1.115-1 6.1.119-1 6.11.10-1 6.12.5-1 |
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Reference Links
- https://git.kernel.org/stable/c/4589f77c18dd98b65f45617b6d1e95313cf6fcab
- https://git.kernel.org/stable/c/5161b48712dcd08ec427c450399d4d1483e21dea
- https://lkml.kernel.org/r/20240801024603.1865-1-songmuchun@bytedance.com
- https://lore.kernel.org/linux-cve-announce/2024082659-CVE-2024-43888-5beb@gregkh/T
- https://access.redhat.com/errata/RHSA-2024:9315
- https://bugzilla.redhat.com/show_bug.cgi?id=2307861
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-43888
- https://nvd.nist.gov/vuln/detail/CVE-2024-43888
- https://launchpad.net/bugs/cve/CVE-2024-43888
- https://security-tracker.debian.org/tracker/CVE-2024-43888
- https://ubuntu.com/security/CVE-2024-43888
- https://git.kernel.org/linus/5161b48712dcd08ec427c450399d4d1483e21dea
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