U.S. flag   An official website of the United States government
Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.


Secure .gov websites use HTTPS
A lock (Dot gov) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

Vulnerability Change Records for CVE-2023-52473

Change History

New CVE Received by NIST 2/26/2024 11:27:48 AM

Action Type Old Value New Value
Added Description

In the Linux kernel, the following vulnerability has been resolved:

thermal: core: Fix NULL pointer dereference in zone registration error path

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).

Commit adc8749b150c ("thermal/drivers/core: Use put_device() if
device_register() fails") added the tz = NULL assignment in question to
avoid a possible double-free after dropping the reference to the zone
device.  However, after commit 4649620d9404 ("thermal: core: Make
thermal_zone_device_unregister() return after freeing the zone"), that
assignment has become redundant, because dropping the reference to the
zone device does not cause the zone object to be freed any more.

Drop it to address the NULL pointer dereference.
Added Reference

Linux https://git.kernel.org/stable/c/02871710b93058eb1249d5847c0b2d1c2c3c98ae [No types assigned]
Added Reference

Linux https://git.kernel.org/stable/c/04e6ccfc93c5a1aa1d75a537cf27e418895e20ea [No types assigned]
Added Reference

Linux https://git.kernel.org/stable/c/335176dd8ebaca6493807dceea33c478305667fa [No types assigned]