CVE-2022-49232

drm/amd/display: Fix a NULL pointer dereference in amdgpu_dm_connector_add_common_modes()

Description

In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Fix a NULL pointer dereference in amdgpu_dm_connector_add_common_modes() In amdgpu_dm_connector_add_common_modes(), amdgpu_dm_create_common_mode() is assigned to mode and is passed to drm_mode_probed_add() directly after that. drm_mode_probed_add() passes &mode->head to list_add_tail(), and there is a dereference of it in list_add_tail() without recoveries, which could lead to NULL pointer dereference on failure of amdgpu_dm_create_common_mode(). Fix this by adding a NULL check of mode. This bug was found by a static analyzer. Builds with 'make allyesconfig' show no new warnings, and our static analyzer no longer warns about this code.

Category

5.5
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.02%
Affected: Linux Linux
Affected: Linux Linux
Published at:
Updated at:

References

Link Tags
https://git.kernel.org/stable/c/2c729dec8c1e3e2892fde5ce8181553860914e74 patch
https://git.kernel.org/stable/c/57f4ad5e286fe4599c8fc63cf89f85f9eec7f9c9 patch
https://git.kernel.org/stable/c/19a7eba284790cfbba2945deb2363cf03ce41648 patch
https://git.kernel.org/stable/c/bdc7429708a0772d90c208975694f7c2133b1202 patch
https://git.kernel.org/stable/c/f4eaa999fec78dec2a9c2d797438e05cbffb125b patch
https://git.kernel.org/stable/c/639b3b9def0a6a3f316a195d705d14113236e89c patch
https://git.kernel.org/stable/c/588a70177df3b1777484267584ef38ab2ca899a2 patch

Frequently Asked Questions

What is the severity of CVE-2022-49232?
CVE-2022-49232 has been scored as a medium severity vulnerability.
How to fix CVE-2022-49232?
To fix CVE-2022-49232, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2022-49232 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2022-49232 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2022-49232?
CVE-2022-49232 affects Linux Linux, Linux Linux.
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