CVE-2024-27040
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2024-27040
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-27040.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2024-27040
- Downstream
- Published
- 2024-05-01T12:54:00Z
- Modified
- 2025-10-21T20:44:38.474951Z
- Severity
-
- 4.7 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- drm/amd/display: Add 'replay' NULL check in 'edp_set_replay_allow_active()'
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
drm/amd/display: Add 'replay' NULL check in 'edpsetreplayallowactive()'
In the first if statement, we're checking if 'replay' is NULL. But in the second if statement, we're not checking if 'replay' is NULL again before calling replay->funcs->replaysetpower_opt().
if (replay == NULL && force_static) return false;
...
if (link->replaysettings.replayfeatureenabled && replay->funcs->replaysetpoweropt) { replay->funcs->replaysetpoweropt(replay, *poweropts, panelinst); link->replaysettings.replaypoweroptactive = *poweropts; }
If 'replay' is NULL, this will cause a null pointer dereference.
Fixes the below found by smatch: drivers/gpu/drm/amd/amdgpu/../display/dc/link/protocols/linkedppanelcontrol.c:895 edpsetreplayallow_active() error: we previously assumed 'replay' could be null (see line 887)
- References
-
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- https://git.kernel.org/stable/c/d0e94f4807ff0df66cf447d6b4bbb8ac830e99c3
- https://git.kernel.org/stable/c/e7cadd5d3a8ffe334d0229ba9eda4290138d56e7
- https://git.kernel.org/stable/c/f610c46771ef1047e46d61807aa7c69cd29e63d8
- https://git.kernel.org/stable/c/f6aed043ee5d75b3d1bfc452b1a9584b63c8f76b
Affected packages
Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Affected ranges
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introducedc7ddc0a800bc9f681a18c3bdd9f06b61adfabc11Fixedf610c46771ef1047e46d61807aa7c69cd29e63d8
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introducedc7ddc0a800bc9f681a18c3bdd9f06b61adfabc11Fixede7cadd5d3a8ffe334d0229ba9eda4290138d56e7
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introducedc7ddc0a800bc9f681a18c3bdd9f06b61adfabc11Fixedd0e94f4807ff0df66cf447d6b4bbb8ac830e99c3
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introducedc7ddc0a800bc9f681a18c3bdd9f06b61adfabc11Fixedf6aed043ee5d75b3d1bfc452b1a9584b63c8f76b