| From bippy-1.0.0 Mon Sep 17 00:00:00 2001 |
| From: Greg Kroah-Hartman <gregkh@kernel.org> |
| To: <linux-cve-announce@vger.kernel.org> |
| Reply-to: <cve@kernel.org>, <linux-kernel@vger.kernel.org> |
| Subject: CVE-2024-43888: mm: list_lru: fix UAF for memory cgroup |
| |
| Description |
| =========== |
| |
| 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] |
| |
| The Linux kernel CVE team has assigned CVE-2024-43888 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 6.8 with commit 0a97c01cd20bb96359d8c9dedad92a061ed34e0b and fixed in 6.10.5 with commit 4589f77c18dd98b65f45617b6d1e95313cf6fcab |
| Issue introduced in 6.8 with commit 0a97c01cd20bb96359d8c9dedad92a061ed34e0b and fixed in 6.11 with commit 5161b48712dcd08ec427c450399d4d1483e21dea |
| |
| Please see https://www.kernel.org for a full list of currently supported |
| kernel versions by the kernel community. |
| |
| Unaffected versions might change over time as fixes are backported to |
| older supported kernel versions. The official CVE entry at |
| https://cve.org/CVERecord/?id=CVE-2024-43888 |
| will be updated if fixes are backported, please check that for the most |
| up to date information about this issue. |
| |
| |
| Affected files |
| ============== |
| |
| The file(s) affected by this issue are: |
| mm/list_lru.c |
| |
| |
| Mitigation |
| ========== |
| |
| The Linux kernel CVE team recommends that you update to the latest |
| stable kernel version for this, and many other bugfixes. Individual |
| changes are never tested alone, but rather are part of a larger kernel |
| release. Cherry-picking individual commits is not recommended or |
| supported by the Linux kernel community at all. If however, updating to |
| the latest release is impossible, the individual changes to resolve this |
| issue can be found at these commits: |
| https://git.kernel.org/stable/c/4589f77c18dd98b65f45617b6d1e95313cf6fcab |
| https://git.kernel.org/stable/c/5161b48712dcd08ec427c450399d4d1483e21dea |
