Description (CNA)
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 (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 01cacb00b35cb62b139f07d5f84bcf0eeda8eff6 before ddee5b4b6a1cc03c1e9921cf34382e094c2009f1; affected 01cacb00b35cb62b139f07d5f84bcf0eeda8eff6 before f2c865e9e3ca44fc06b5f73b29a954775e4dbb38; affected 01cacb00b35cb62b139f07d5f84bcf0eeda8eff6 before 2b4f46f9503633dade75cb796dd1949d0e6581a1; affected 01cacb00b35cb62b139f07d5f84bcf0eeda8eff6 before 9a9afbbc3fbfca4975eea4aa5b18556db5a0c0b8; affected 01cacb00b35cb62b139f07d5f84bcf0eeda8eff6 before 0201d65d9806d287a00e0ba96f0321835631f63f; affected 01cacb00b35cb62b139f07d5f84bcf0eeda8eff6 before 48e50dcbcbaaf713d82bf2da5c16aeced94ad07d |
| Linux / Linux | affected 5.7; unaffected 0 before 5.7; unaffected 5.10.226 through 5.10.*; unaffected 5.15.167 through 5.15.*; unaffected 6.1.109 through 6.1.*; unaffected 6.6.48 through 6.6.*; unaffected 6.10.7 through 6.10.*; unaffected 6.11 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/ddee5b4b6a1cc03c1e9921cf34382e094c2009f1
- https://git.kernel.org/stable/c/f2c865e9e3ca44fc06b5f73b29a954775e4dbb38
- https://git.kernel.org/stable/c/2b4f46f9503633dade75cb796dd1949d0e6581a1
- https://git.kernel.org/stable/c/9a9afbbc3fbfca4975eea4aa5b18556db5a0c0b8
- https://git.kernel.org/stable/c/0201d65d9806d287a00e0ba96f0321835631f63f
- https://git.kernel.org/stable/c/48e50dcbcbaaf713d82bf2da5c16aeced94ad07d
ADP enrichment
No English description supplied.
No references supplied.
No English description supplied.