NetSight
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medium5.5

CVE-2024-40931

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…

Impact

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.

Affected products

VendorProductAffected versions
LinuxLinux Kernel
from 5.9 before 5.10.221
from 5.11 before 5.15.162
from 5.16 before 6.1.95
from 6.2 before 6.6.35
from 6.7 before 6.9.6
Version 6.10

Weakness classification

CWE-908

References