CVE-2024-53122

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 3.1

5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS

0.5% chance of exploitation in the next 30 days; higher than 44% of CVEs (scores of 2026-10-25)

CWE

CWE-362

Published

2024-12-02

Modified

2026-10-15

Record from

the NVD, synced 2026-10-19

Affected

• linux:linux_kernel

References

• https://git.kernel.org/stable/c/0a9a182ea5c7bb0374e527130fd85024ace7279b
• https://git.kernel.org/stable/c/24995851d58c4a205ad0ffa7b2f21e479a9c8527
• https://git.kernel.org/stable/c/aad6412c63baa39dd813e81f16a14d976b3de2e8
• https://git.kernel.org/stable/c/ce7356ae35943cc6494cc692e62d51a734062b7d
• https://git.kernel.org/stable/c/ff825ab2f455299c0c7287550915a8878e2a66e0

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