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high7.8

CVE-2024-44974

In the Linux kernel, the following vulnerability has been resolved: mptcp: pm: avoid possible UaF when selecting endp select_local_address() and select_signal_…

Impact

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.

Affected products

VendorProductAffected versions
DebianDebian Linux
Version 11.0
LinuxLinux Kernel
from 5.7 before 5.10.226
from 5.11 before 5.15.167
from 5.16 before 6.1.109
from 6.2 before 6.6.48
from 6.7 before 6.10.7
Version 6.11

Weakness classification

CWE-416

References