CVE-2024-26647 drm/amd/display: Fix late derefrence 'dsc' check in 'link_set_dsc_pps_packet()'

What is CVE-2024-26647?

CVE-2024-26647 is a medium-severity vulnerability in Linux kernel, published on 26 Mar 2024. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

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)

Weakness: CWE-476

Which versions are affected by CVE-2024-26647?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2024-26647?

Apply the vendor's patch.

Is CVE-2024-26647 being exploited?

There is no known exploitation of CVE-2024-26647 in the wild and no public exploit code.

Other vulnerabilities in Linux kernel

• CVE-2026-53266 Linux Kernel Out-of-Bounds Write Exploited High 8.8
• CVE-2013-6282 Linux Kernel Improper Input Validation Exploited High 8.8
• CVE-2022-0185 Linux Kernel Heap-Based Buffer Overflow Exploited High 8.4
• CVE-2013-2094 Linux Kernel Privilege Escalation Exploited High 8.4
• CVE-2026-53362 Linux Kernel Unspecified Exploited High 7.8

All Linux kernel vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as AZL-54966, BELL-CVE-2024-26647, DEBIAN-CVE-2024-26647, GHSA-gxqp-64jf-hj53, ROOT-OS-DEBIAN-12-CVE-2024-26647, ROOT-OS-UBUNTU-2204-CVE-2024-26647 and 1 more.