Linux · Linux Kernel · CVE-2023-52473
**Name of the Vulnerable Software and Affected Versions**
Linux kernel (affected versions not specified)
**Description**
The issue is related to a NULL pointer dereference in the zone registration error path of the thermal core in the Linux kernel. If `device register()` in `thermal zone device register with trips()` returns an error, the `tz` variable is set to NULL and subsequently dereferenced in `kfree(tz->tzp)`. This problem arose from a commit intended to avoid a double-free after dropping the reference to the zone device, but it became redundant after another commit changed the behavior of `thermal zone device unregister()`. The vulnerability can be exploited by a remote attacker to cause a denial of service.
**Recommendations**
At the moment, there is no information about a newer version that contains a fix for this vulnerability.