CVE-2024-45009

In the Linux kernel, the following vulnerability has been resolved: mptcp: pm: only decrement add_addr_accepted for MPJ req Adding the following warning ... WARN_ON_ONCE(msk->pm.add_addr_accepted == 0) ... before decrementing the add_addr_accepted counter helped to find a bug when running the "remove single subflow" subtest from the mptcp_join.sh selftest. Removing a 'subflow' endpoint will first trigger a RM_ADDR, then the subflow closure. Before this patch, and upon the reception of the RM_ADDR, the other peer will then try to decrement this add_addr_accepted. That's not correct because the attached subflows have not been created upon the reception of an ADD_ADDR. A way to solve that is to decrement the counter only if the attached subflow was an MP_JOIN to a remote id that was not 0, and initiated by the host receiving the RM_ADDR.

The following products are affected by CVE-2024-45009 vulnerability.

Here, you will find a curated list of external links that provide in-depth information to CVE-2024-45009.

URL	Resource
https://git.kernel.org/stable/c/1c1f721375989579e46741f59523e39ec9b2a9bd
https://git.kernel.org/stable/c/2060f1efab370b496c4903b840844ecaff324c3c
https://git.kernel.org/stable/c/35b31f5549ede4070566b949781e83495906b43d
https://git.kernel.org/stable/c/85b866e4c4e63a1d7afb58f1e24273caad03d0b7
https://git.kernel.org/stable/c/d20bf2c96d7ffd171299b32f562f70e5bf5dc608
https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html
https://lore.kernel.org/linux-cve-announce/2024091104-CVE-2024-45009-24ea@gregkh/T
https://nvd.nist.gov/vuln/detail/CVE-2024-45009
https://www.cve.org/CVERecord?id=CVE-2024-45009