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THREATINT
PUBLISHED

CVE-2024-44974

mptcp: pm: avoid possible UaF when selecting endp



AssignerLinux
Reserved2024-08-21
Published2024-09-04
Updated2024-09-04

Description

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.

Product status

Default status
0x400003aec0

01cacb00b35c before 9a9afbbc3fbf
affected

01cacb00b35c before 0201d65d9806
affected

01cacb00b35c before 48e50dcbcbaa
affected

Default status
0x400003b4e0

5.7
affected

Any version before 5.7
unaffected

6.6.48
unaffected

6.10.7
unaffected

6.11-rc5
unaffected

References

https://git.kernel.org/stable/c/9a9afbbc3fbfca4975eea4aa5b18556db5a0c0b8

https://git.kernel.org/stable/c/0201d65d9806d287a00e0ba96f0321835631f63f

https://git.kernel.org/stable/c/48e50dcbcbaaf713d82bf2da5c16aeced94ad07d

cve.org CVE-2024-44974

nvd.nist.gov CVE-2024-44974

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