Description
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().
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
c76c6956566f974bac2470bd72fc22fb923e04a1 to < 0a9a182ea5c7bb0374e527130fd85024ace7279baffectedc76c6956566f974bac2470bd72fc22fb923e04a1 to < 24995851d58c4a205ad0ffa7b2f21e479a9c8527affectedc76c6956566f974bac2470bd72fc22fb923e04a1 to < ff825ab2f455299c0c7287550915a8878e2a66e0affectedc76c6956566f974bac2470bd72fc22fb923e04a1 to < aad6412c63baa39dd813e81f16a14d976b3de2e8affectedc76c6956566f974bac2470bd72fc22fb923e04a1 to < ce7356ae35943cc6494cc692e62d51a734062b7daffected
Linux Linux
Default version status: affected
5.10affected0 to < 5.10unaffected5.15.174 to ≤ 5.15.*unaffected6.1.119 to ≤ 6.1.*unaffected6.6.63 to ≤ 6.6.*unaffected6.11.10 to ≤ 6.11.*unaffected6.12 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/0a9a182ea5c7bb0374e527130fd85024ace7279b ↗
- https://git.kernel.org/stable/c/24995851d58c4a205ad0ffa7b2f21e479a9c8527 ↗
- https://git.kernel.org/stable/c/ff825ab2f455299c0c7287550915a8878e2a66e0 ↗
- https://git.kernel.org/stable/c/aad6412c63baa39dd813e81f16a14d976b3de2e8 ↗
- https://git.kernel.org/stable/c/ce7356ae35943cc6494cc692e62d51a734062b7d ↗
- https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html ↗