CVE-2024-40931 — Use of Uninitialized Resource in Linux
CWE-908 — Use of Uninitialized ResourceCWE-400 — Uncontrolled Resource Consumption32 documents7 sources
Severity
5.5MEDIUMNVD
EPSS
0.0%
top 99.16%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedJul 12
Latest updateAug 14
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.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HExploitability: 1.8 | Impact: 3.6
Affected Packages6 packages
▶CVEListV5linux/linux8fd738049ac3d67a937d36577763b47180aae1ad — 208cd22ef5e57f82d38ec11c1a1703f9401d6dde+6