CVE-2023-52732
CriticalCVSS 9.8Exploitation Probability (EPSS)
Low risk41th percentile - higher than 41% of all known CVEs
Summary
In the Linux kernel, the ceph module has a vulnerability where the kclient is blocklisted after receiving a corrupted snap trace. The issue can lead to continuing I/O and metadata access, potentially corrupting data.
Risk Assessment
The vulnerability can lead to data corruption or malfunction of the ceph filesystem. An attacker could exploit it to compromise data integrity.
Recommendation
Update the Linux kernel to a version with the fix for CVE-2023-52732. Also monitor system logs for error messages.
Original NVD description (English source)
In the Linux kernel, the following vulnerability has been resolved: ceph: blocklist the kclient when receiving corrupted snap trace When received corrupted snap trace we don't know what exactly has happened in MDS side. And we shouldn't continue IOs and metadatas access to MDS, which may corrupt or get incorrect contents. This patch will just block all the further IO/MDS requests immediately and then evict the kclient itself. The reason why we still need to evict the kclient just after blocking all the further IOs is that the MDS could revoke the caps faster.