CVE-2024-40931

Source
https://nvd.nist.gov/vuln/detail/CVE-2024-40931
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2024-40931.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2024-40931
Downstream
Related
Published
2024-07-12T12:25:09.778Z
Modified
2025-11-27T02:33:29.714321Z
Summary
mptcp: ensure snd_una is properly initialized on connect
Details

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 sndnxt 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 snduna is still left uninitialized.

Address the issue explicitly initializing snduna together with sndnxt and write_seq.

Database specific
{
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/blob/cc431b3424123d84bcd7afd4de150b33f117a8ef/cves/2024/40xxx/CVE-2024-40931.json"
}
References

Affected packages

Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Affected ranges

Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
8fd738049ac3d67a937d36577763b47180aae1ad
Fixed
208cd22ef5e57f82d38ec11c1a1703f9401d6dde
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
8fd738049ac3d67a937d36577763b47180aae1ad
Fixed
7b9c7fc8600b64a86e4b47b2d190bba380267726
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
8fd738049ac3d67a937d36577763b47180aae1ad
Fixed
f03c46eabb3a67bd2993e237ab5517f00a5f1813
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
8fd738049ac3d67a937d36577763b47180aae1ad
Fixed
f1f0a46f8bb8890b90ab7194f0a0c8fe2a3fb57f
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
8fd738049ac3d67a937d36577763b47180aae1ad
Fixed
ef473bf1dd7e8dd08bcc04b9e2d1bfed69a0a7ce
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
8fd738049ac3d67a937d36577763b47180aae1ad
Fixed
8031b58c3a9b1db3ef68b3bd749fbee2e1e1aaa3

Linux / Kernel

Package

Name
Kernel

Affected ranges

Type
ECOSYSTEM
Events
Introduced
5.9.0
Fixed
5.10.221
Type
ECOSYSTEM
Events
Introduced
5.11.0
Fixed
5.15.162
Type
ECOSYSTEM
Events
Introduced
5.16.0
Fixed
6.1.95
Type
ECOSYSTEM
Events
Introduced
6.2.0
Fixed
6.6.35
Type
ECOSYSTEM
Events
Introduced
6.7.0
Fixed
6.9.6