CVE-2024-40931 Affecting kernel-64kb-devel package, versions <6.4.0-150600.23.17.1
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Test your applications- Snyk ID SNYK-SLES156-KERNEL64KBDEVEL-7649377
- published 8 Aug 2024
- disclosed 7 Aug 2024
Introduced: 7 Aug 2024
CVE-2024-40931 Open this link in a new tabHow to fix?
Upgrade SLES:15.6 kernel-64kb-devel to version 6.4.0-150600.23.17.1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-64kb-devel package and not the kernel-64kb-devel 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:
mptcp: ensure snd_una is properly initialized on connect
This is strictly related to commit fb7a0d334894 ("mptcp: ensure snd_nxt is properly initialized on connect"). It turns out that syzkaller can trigger the retransmit after fallback and before processing any other incoming packet - so that snd_una is still left uninitialized.
Address the issue explicitly initializing snd_una together with snd_nxt and write_seq.
References
- https://www.suse.com/security/cve/CVE-2024-40931.html
- https://bugzilla.suse.com/1227780
- https://git.kernel.org/stable/c/208cd22ef5e57f82d38ec11c1a1703f9401d6dde
- https://git.kernel.org/stable/c/7b9c7fc8600b64a86e4b47b2d190bba380267726
- https://git.kernel.org/stable/c/8031b58c3a9b1db3ef68b3bd749fbee2e1e1aaa3
- https://git.kernel.org/stable/c/ef473bf1dd7e8dd08bcc04b9e2d1bfed69a0a7ce
- https://git.kernel.org/stable/c/f03c46eabb3a67bd2993e237ab5517f00a5f1813
- https://git.kernel.org/stable/c/f1f0a46f8bb8890b90ab7194f0a0c8fe2a3fb57f