CVE-2026-64039 drm/msm/snapshot: fix dumping of the unaligned regions

What is CVE-2026-64039?

CVE-2026-64039 is a high-severity vulnerability in Linux kernel, published on 19 Jul 2026. 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/msm/snapshot: fix dumping of the unaligned regions

The snapshotting code internally aligns data segment to 16 bytes. This works fine for DPU code (where most of the regions are aligned), but fails for snapshotting of the DSI data (because DSI data region is shifted by 4 bytes). Fix the code by removing length alignment and by accurately printing last registers in the region. While reworking the code also fix the 16x memory overallocation in msm_disp_state_dump_regs().

Patchwork: https://patchwork.freedesktop.org/patch/725449/

Weakness: CWE-131

Which versions are affected by CVE-2026-64039?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2026-64039?

Apply the vendor's patch.

Is CVE-2026-64039 being exploited?

There is no known exploitation of CVE-2026-64039 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 BELL-CVE-2026-64039, DEBIAN-CVE-2026-64039, GHSA-3hrp-9734-8xmp, UBUNTU-CVE-2026-64039.