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().
Metrics
CVSS 3.1 5.5/10
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= c76c6956566f974bac2470bd72fc22fb923e04a1, < 0a9a182ea5c7bb0374e527130fd85024ace7279b; >= c76c6956566f974bac2470bd72fc22fb923e04a1, < 24995851d58c4a205ad0ffa7b2f21e479a9c8527; >= c76c6956566f974bac2470bd72fc22fb923e04a1, < ff825ab2f455299c0c7287550915a8878e2a66e0; >= c76c6956566f974bac2470bd72fc22fb923e04a1, < aad6412c63baa39dd813e81f16a14d976b3de2e8; >= c76c6956566f974bac2470bd72fc22fb923e04a1, < ce7356ae35943cc6494cc692e62d51a734062b7d |
| Linux | Linux | 5.10 |
References
- https://git.kernel.org/stable/c/0a9a182ea5c7bb0374e527130fd85024ace7279b
- https://git.kernel.org/stable/c/24995851d58c4a205ad0ffa7b2f21e479a9c8527Patch
- https://git.kernel.org/stable/c/aad6412c63baa39dd813e81f16a14d976b3de2e8Patch
- https://git.kernel.org/stable/c/ce7356ae35943cc6494cc692e62d51a734062b7dPatch
- https://git.kernel.org/stable/c/ff825ab2f455299c0c7287550915a8878e2a66e0Patch
- https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html
Timeline
- Published
- Dec 2, 2024
- Last modified
- Oct 15, 2026
- NVD status
- Modified