CVE-2024-26647: drm/amd/display: Fix late derefrence 'dsc' check in 'link_set_dsc_pps_packet()'
First published: Tue Mar 26 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Fix late derefrence 'dsc' check in 'link_set_dsc_pps_packet()' In link_set_dsc_pps_packet(), 'struct display_stream_compressor *dsc' was dereferenced in a DC_LOGGER_INIT(dsc->ctx->logger); before the 'dsc' NULL pointer check. Fixes the below: drivers/gpu/drm/amd/amdgpu/../display/dc/link/link_dpms.c:905 link_set_dsc_pps_packet() warn: variable dereferenced before check 'dsc' (see line 903)
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | <6.6.15 | |
| Linux Kernel | >=6.7<6.7.3 | |
| debian/linux | <=5.10.223-1<=5.10.226-1<=6.1.123-1<=6.1.119-1 | 6.12.11-1 6.12.12-1 |
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Reference Links
- https://git.kernel.org/stable/c/3bb9b1f958c3d986ed90a3ff009f1e77e9553207
- https://git.kernel.org/stable/c/6aa5ede6665122f4c8abce3c6eba06b49e54d25c
- https://git.kernel.org/stable/c/cf656fc7276e5b3709a81bc9d9639459be2b2647
- https://launchpad.net/bugs/cve/CVE-2024-26647
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-26647
- https://nvd.nist.gov/vuln/detail/CVE-2024-26647
- https://security-tracker.debian.org/tracker/CVE-2024-26647
- https://ubuntu.com/security/CVE-2024-26647
- https://git.kernel.org/linus/3bb9b1f958c3d986ed90a3ff009f1e77e9553207
Frequently Asked Questions
What is the severity of CVE-2024-26647?
CVE-2024-26647 is classified as a medium severity vulnerability.
How do I fix CVE-2024-26647?
To fix CVE-2024-26647, update your Linux kernel to version 6.12.10-1 or 6.12.11-1, or ensure your kernel is not older than the specified version ranges provided.
What versions of the Linux kernel are affected by CVE-2024-26647?
CVE-2024-26647 affects Linux kernel versions up to 6.6.15 and from 6.7 to 6.7.3.
What is the nature of the vulnerability CVE-2024-26647?
The nature of CVE-2024-26647 involves a late dereference check in the AMD display drivers, which could lead to potential instability.
Is there a known exploit for CVE-2024-26647?
As of now, there is no publicly disclosed exploit specifically targeting CVE-2024-26647.
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