CVE-2023-53444 drm/ttm: fix bulk_move corruption when adding a entry

What is CVE-2023-53444?

CVE-2023-53444 is a medium-severity vulnerability in Linux kernel, published on 18 Sep 2025. 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/ttm: fix bulk_move corruption when adding a entry

When the resource is the first in the bulk_move range, adding it again (thus moving it to the tail) will corrupt the list since the first pointer is not moved. This eventually lead to null pointer deref in ttm_lru_bulk_move_del()

Weakness: CWE-476

Which versions are affected by CVE-2023-53444?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2023-53444?

Apply the vendor's patch.

Is CVE-2023-53444 being exploited?

There is no known exploitation of CVE-2023-53444 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-2023-53444, DEBIAN-CVE-2023-53444, GHSA-6cj4-5m2x-2qj3, UBUNTU-CVE-2023-53444.