Linux · Linux Kernel · CVE-2023-52646
**Name of the Vulnerable Software and Affected Versions**
Linux kernel (affected versions not specified)
**Description**
The issue is related to a null-deref in the Linux kernel when `mremap` is called on an old aio mapping after fork, as `mm->ioctx table` will be set to NULL. This occurs due to a commit that made it possible to remap the aio ring. There is no information provided about the estimated number of potentially affected devices or real-world incidents where this issue was exploited.
**Recommendations**
At the moment, there is no information about a newer version that contains a fix for this vulnerability.