vulnerability
Red Hat: CVE-2024-40931: kernel: mptcp: ensure snd_una is properly initialized on connect (Multiple Advisories)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 5 | (AV:L/AC:L/Au:S/C:N/I:N/A:C) | 2024-07-12 | 2024-09-25 | 2025-03-10 |
Severity
5
CVSS
(AV:L/AC:L/Au:S/C:N/I:N/A:C)
Published
2024-07-12
Added
2024-09-25
Modified
2025-03-10
Description
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.
Solution(s)
redhat-upgrade-kernelredhat-upgrade-kernel-rt
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