CVE-2024-45010

Description

In the Linux kernel, the following vulnerability has been resolved: mptcp: pm: only mark 'subflow' endp as available Adding the following warning ... WARN_ON_ONCE(msk->pm.local_addr_used == 0) ... before decrementing the local_addr_used counter helped to find a bug when running the "remove single address" subtest from the mptcp_join.sh selftests. Removing a 'signal' endpoint will trigger the removal of all subflows linked to this endpoint via mptcp_pm_nl_rm_addr_or_subflow() with rm_type == MPTCP_MIB_RMSUBFLOW. This will decrement the local_addr_used counter, which is wrong in this case because this counter is linked to 'subflow' endpoints, and here it is a 'signal' endpoint that is being removed. Now, the counter is decremented, only if the ID is being used outside of mptcp_pm_nl_rm_addr_or_subflow(), only for 'subflow' endpoints, and if the ID is not 0 -- local_addr_used is not taking into account these ones. This marking of the ID as being available, and the decrement is done no matter if a subflow using this ID is currently available, because the subflow could have been closed before.

Reserved 2024-08-21 | Published 2024-09-11 | Updated 2024-11-05 | Assigner Linux

Product status

Default status
unaffected

06faa2271034 before 7fdc870d0896
affected

06faa2271034 before 43cf912b0b0f
affected

06faa2271034 before 9849cfc67383
affected

06faa2271034 before 322ea3778965
affected

Default status
affected

5.13
affected

Any version before 5.13
unaffected

6.1.108
unaffected

6.6.48
unaffected

6.10.7
unaffected

6.11
unaffected

References

git.kernel.org/...c/7fdc870d08960961408a44c569f20f50940e7d4f

git.kernel.org/...c/43cf912b0b0fc7b4fd12cbc735d1f5afb8e1322d

git.kernel.org/...c/9849cfc67383ceb167155186f8f8fe8a896b60b3

git.kernel.org/...c/322ea3778965da72862cca2a0c50253aacf65fe6

cve.org (CVE-2024-45010)

nvd.nist.gov (CVE-2024-45010)

Download JSON