CVE-2024-38544 Affecting kernel-syms package, versions <6.4.0-150600.23.14.2
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Test your applications- Snyk ID SNYK-SLES156-KERNELSYMS-7553363
- published 23 Jul 2024
- disclosed 22 Jul 2024
Introduced: 22 Jul 2024
CVE-2024-38544 Open this link in a new tabHow to fix?
Upgrade SLES:15.6 kernel-syms to version 6.4.0-150600.23.14.2 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-syms package and not the kernel-syms package as distributed by SLES.
See How to fix? for SLES:15.6 relevant fixed versions and status.
In the Linux kernel, the following vulnerability has been resolved:
RDMA/rxe: Fix seg fault in rxe_comp_queue_pkt
In rxe_comp_queue_pkt() an incoming response packet skb is enqueued to the resp_pkts queue and then a decision is made whether to run the completer task inline or schedule it. Finally the skb is dereferenced to bump a 'hw' performance counter. This is wrong because if the completer task is already running in a separate thread it may have already processed the skb and freed it which can cause a seg fault. This has been observed infrequently in testing at high scale.
This patch fixes this by changing the order of enqueuing the packet until after the counter is accessed.
References
- https://www.suse.com/security/cve/CVE-2024-38544.html
- https://bugzilla.suse.com/1226597
- https://git.kernel.org/stable/c/21b4c6d4d89030fd4657a8e7c8110fd941049794
- https://git.kernel.org/stable/c/2b23b6097303ed0ba5f4bc036a1c07b6027af5c6
- https://git.kernel.org/stable/c/30df4bef8b8e183333e9b6e9d4509d552c7da6eb
- https://git.kernel.org/stable/c/bbad88f111a1829f366c189aa48e7e58e57553fc
- https://git.kernel.org/stable/c/faa8d0ecf6c9c7c2ace3ca3e552180ada6f75e19