CVE-2024-49909: drm/amd/display: Add NULL check for function pointer in dcn32_set_output_transfer_func
First published: Mon Oct 21 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Add NULL check for function pointer in dcn32_set_output_transfer_func This commit adds a null check for the set_output_gamma function pointer in the dcn32_set_output_transfer_func function. Previously, set_output_gamma was being checked for null, but then it was being dereferenced without any null check. This could lead to a null pointer dereference if set_output_gamma is null. To fix this, we now ensure that set_output_gamma is not null before dereferencing it. We do this by adding a null check for set_output_gamma before the call to set_output_gamma.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | <6.10.14 | |
| Linux Kernel | >=6.11<6.11.3 | |
| debian/linux | <=5.10.223-1<=5.10.226-1 | 6.1.123-1 6.1.128-1 6.12.12-1 6.12.15-1 |
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Reference Links
- https://git.kernel.org/stable/c/28574b08c70e56d34d6f6379326a860b96749051
- https://git.kernel.org/stable/c/496486950c3d2aebf46a3be300296ac091da7a2d
- https://git.kernel.org/stable/c/5298270bdabe97be5b8236e544c9e936415fe1f2
- https://git.kernel.org/stable/c/e087c9738ee1cdeebde346f4dfc819e5f7057e90
- https://git.kernel.org/stable/c/f38b09ba6a335c511eb27920bb9bb4a1b2c20084
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-49909
- https://nvd.nist.gov/vuln/detail/CVE-2024-49909
- https://launchpad.net/bugs/cve/CVE-2024-49909
- https://security-tracker.debian.org/tracker/CVE-2024-49909
- https://ubuntu.com/security/CVE-2024-49909
- https://git.kernel.org/linus/28574b08c70e56d34d6f6379326a860b96749051
Frequently Asked Questions
What is the severity of CVE-2024-49909?
CVE-2024-49909 has been classified as a moderate severity vulnerability in the Linux kernel.
How do I fix CVE-2024-49909?
To fix CVE-2024-49909, update to versions 6.1.123-1, 6.12.10-1, or 6.12.11-1 of the Linux kernel.
What versions of the Linux kernel are affected by CVE-2024-49909?
CVE-2024-49909 affects Linux kernel versions prior to 6.10.14 and between 6.11 and 6.11.3.
What components are impacted by CVE-2024-49909?
CVE-2024-49909 specifically impacts the AMD display driver within the Linux kernel.
Is CVE-2024-49909 related to a specific function in the Linux kernel?
Yes, CVE-2024-49909 is related to the function pointer null check in the dcn32_set_output_transfer_func function.
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