CVE-2022-49669 The advisory has been revoked - it doesn't affect any version of package kernel-rt-modules (opens in a new tab)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-RHEL8-KERNELRTMODULES-9231881
- published5 Mar 2025
- disclosed26 Feb 2025
Introduced: 26 Feb 2025
CVE-2022-49669 (opens in a new tab)Amendment
The Red Hat security team deemed this advisory irrelevant for RHEL:8.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-rt-modules package and not the kernel-rt-modules package as distributed by RHEL.
In the Linux kernel, the following vulnerability has been resolved:
mptcp: fix race on unaccepted mptcp sockets
When the listener socket owning the relevant request is closed, it frees the unaccepted subflows and that causes later deletion of the paired MPTCP sockets.
The mptcp socket's worker can run in the time interval between such delete operations. When that happens, any access to msk->first will cause an UaF access, as the subflow cleanup did not cleared such field in the mptcp socket.
Address the issue explicitly traversing the listener socket accept queue at close time and performing the needed cleanup on the pending msk.
Note that the locking is a bit tricky, as we need to acquire the msk socket lock, while still owning the subflow socket one.