CVE-2024-44974
mptcp: pm: avoid possible UaF when selecting endp
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mptcp: pm: avoid possible UaF when selecting endp
In the Linux kernel, the following vulnerability has been resolved: mptcp: pm: avoid possible UaF when selecting endp select_local_address() and select_signal_address() both select an endpoint entry from the list inside an RCU protected section, but return a reference to it, to be read later on. If the entry is dereferenced after the RCU unlock, reading info could cause a Use-after-Free. A simple solution is to copy the required info while inside the RCU protected section to avoid any risk of UaF later. The address ID might need to be modified later to handle the ID0 case later, so a copy seems OK to deal with.
Reserved 2024-08-21 | Published 2024-09-04 | Updated 2024-12-19 | Assigner Linuxgit.kernel.org/...c/ddee5b4b6a1cc03c1e9921cf34382e094c2009f1
git.kernel.org/...c/f2c865e9e3ca44fc06b5f73b29a954775e4dbb38
git.kernel.org/...c/2b4f46f9503633dade75cb796dd1949d0e6581a1
git.kernel.org/...c/9a9afbbc3fbfca4975eea4aa5b18556db5a0c0b8
git.kernel.org/...c/0201d65d9806d287a00e0ba96f0321835631f63f
git.kernel.org/...c/48e50dcbcbaaf713d82bf2da5c16aeced94ad07d
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