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CVE-2023-53444

drm/ttm: fix bulk_move corruption when adding a entry

MEDIUM
5.5
CVSS Score
Published: September 18, 2025 at 04:04 PM UTC
Updated: June 17, 2026 at 06:45 AM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
MEDIUM5.5
Exploit prediction
EPSS 0.1%
SSVC
No known exploit

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()

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel· Linux
95%
5.19 ≤ v < 6.1.425.19 ≤ v < 6.4.75.19 ≤ v < 6.56.2 ≤ v < 6.4.75.196.5 rc1fee2ede155423b0f7a559050a39750b98fe9db69
Vendor states this is fixed in 4481913607e58196c48a4fef5e6f45350684ec3c (fixed)
Vendor states this is fixed in 70a3015683b007a0db4a1e858791b69afd45fc83 (fixed)
Vendor states this is fixed in e7cf50e41bdc2d574056ebbfeaafc5f0e2562d5b (fixed)
Vendor states this is fixed in 5.19 (unaffected)
Vendor states this is fixed in 6.1.42 (unaffected)
Vendor states this is fixed in 6.4.7 (unaffected)
Vendor states this is fixed in 6.5 (unaffected)

References (3)

Patch
Source: cverecord
https://git.kernel.org/stable/c/70a3015683b007a0db4a1e858791b69afd45fc83
Patch
Source: cverecord
https://git.kernel.org/stable/c/e7cf50e41bdc2d574056ebbfeaafc5f0e2562d5b
Patch
Source: cverecord
https://git.kernel.org/stable/c/4481913607e58196c48a4fef5e6f45350684ec3c

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.5MEDIUMCISA-ADP
Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-476

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