CVE-2022-49232

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

MEDIUM

5.5

CVSS Score

Published: February 26, 2025 at 01:55 AM UTC

Updated: June 17, 2026 at 05:17 AM UTC

1 product affected across 1 vendorLinux Kernel

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Severity

MEDIUM5.5

Exploit prediction

EPSS 0.3%

SSVC

No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel · Linux

95%

4.15 ≤ v < 4.19.2384.15 ≤ v < 5.10.1104.15 ≤ v < 5.15.334.15 ≤ v < 5.16.194.15 ≤ v < 5.17.24.15 ≤ v < 5.184.15 ≤ v < 5.4.1894.20 ≤ v < 5.4.1895.11 ≤ v < 5.15.335.16 ≤ v < 5.16.195.17 ≤ v < 5.17.25.5 ≤ v < 5.10.1104.15e7b07ceef2a650e5ed8ca37997689e086c680daf

Vendor states this is fixed in 19a7eba284790cfbba2945deb2363cf03ce41648 (fixed)

Vendor states this is fixed in 2c729dec8c1e3e2892fde5ce8181553860914e74 (fixed)

Vendor states this is fixed in 57f4ad5e286fe4599c8fc63cf89f85f9eec7f9c9 (fixed)

Vendor states this is fixed in 588a70177df3b1777484267584ef38ab2ca899a2 (fixed)

Vendor states this is fixed in 639b3b9def0a6a3f316a195d705d14113236e89c (fixed)

Vendor states this is fixed in bdc7429708a0772d90c208975694f7c2133b1202 (fixed)

Vendor states this is fixed in f4eaa999fec78dec2a9c2d797438e05cbffb125b (fixed)

Vendor states this is fixed in 4.15 (unaffected)

Vendor states this is fixed in 4.19.238 (unaffected)

Vendor states this is fixed in 5.10.110 (unaffected)

Vendor states this is fixed in 5.15.33 (unaffected)

Vendor states this is fixed in 5.16.19 (unaffected)

Vendor states this is fixed in 5.17.2 (unaffected)

Vendor states this is fixed in 5.18 (unaffected)

Vendor states this is fixed in 5.4.189 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references