CVE-2024-53122

Summary

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 Software

VendorProductVersion RangeStatus
LinuxLinuxc76c6956566f974bac2470bd72fc22fb923e04a1 < 0a9a182ea5c7bb0374e527130fd85024ace7279baffected
LinuxLinuxc76c6956566f974bac2470bd72fc22fb923e04a1 < 24995851d58c4a205ad0ffa7b2f21e479a9c8527affected
LinuxLinuxc76c6956566f974bac2470bd72fc22fb923e04a1 < ff825ab2f455299c0c7287550915a8878e2a66e0affected
LinuxLinuxc76c6956566f974bac2470bd72fc22fb923e04a1 < aad6412c63baa39dd813e81f16a14d976b3de2e8affected
LinuxLinuxc76c6956566f974bac2470bd72fc22fb923e04a1 < ce7356ae35943cc6494cc692e62d51a734062b7daffected
LinuxLinux5.10affected
LinuxLinux0 < 5.10unaffected
LinuxLinux5.15.174 <= 5.15.*unaffected
LinuxLinux6.1.119 <= 6.1.*unaffected
LinuxLinux6.6.63 <= 6.6.*unaffected
LinuxLinux6.11.10 <= 6.11.*unaffected
LinuxLinux6.12 <= *unaffected

Weaknesses

ADP Enrichment

CVE Program Container

Additional References

References