High 7.5Published Dec 2, 2024

CVE-2024-53122mptcp: cope racing subflow creation in mptcp_rcv_space_adjust

Updated under an hour ago (Oct 27, 2026, 1:10 PM ET)

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No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

In the Linux kernel, the following vulnerability has been resolved: mptcp: cope racing subflow creation in mptcp_rcv_space_adjust Additional active subflows - i.e. created by the in kernel path manager - are included into the subflow list before starting the 3whs. A racing recvmsg() spooling data received on an already established subflow would unconditionally call tcp_cleanup_rbuf() on all the current subflows, potentially hitting a divide by zero error on the newly created ones. Explicitly check that the subflow is in a suitable state before invoking tcp_cleanup_rbuf().

CVSS: 7.5 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Modified
Record last updated: Oct 15, 2026
First seen by InfoSec Signals: Oct 15, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from c76c6956566f974bac2470bd72fc22fb923e04a1 before 0a9a182ea5c7bb0374e527130fd85024ace7279b; from c76c6956566f974bac2470bd72fc22fb923e04a1 before 24995851d58c4a205ad0ffa7b2f21e479a9c8527; from c76c6956566f974bac2470bd72fc22fb923e04a1 before ff825ab2f455299c0c7287550915a8878e2a66e0; from c76c6956566f974bac2470bd72fc22fb923e04a1 before aad6412c63baa39dd813e81f16a14d976b3de2e8; from c76c6956566f974bac2470bd72fc22fb923e04a1 before ce7356ae35943cc6494cc692e62d51a734062b7d	CNA record
linux linux_kernel linux:linux_kernel	from 5.10 before 6.1.119; from 6.2 before 6.6.63; from 6.7 before 6.11.10; 6.12; 6.12; 6.12; 6.12; 6.12; and 2 more ranges	NVD

References

References

https://git.kernel.org/stable/c/0a9a182ea5c7bb0374e527130fd85024ace7279b
https://git.kernel.org/stable/c/24995851d58c4a205ad0ffa7b2f21e479a9c8527	patch
https://git.kernel.org/stable/c/ff825ab2f455299c0c7287550915a8878e2a66e0	patch
https://git.kernel.org/stable/c/aad6412c63baa39dd813e81f16a14d976b3de2e8	patch
https://git.kernel.org/stable/c/ce7356ae35943cc6494cc692e62d51a734062b7d	patch
https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.