PT-2025-52948 · Linux · Linux Kernel

Published 2023-01-18 · Updated 2026-02-24 · CVE-2023-53991

Positive Technologies (AI Summary)

CVSS v2.0

4.3

Medium

Base vector

AV:A/AC:H/Au:S/C:N/I:N/A:C

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description A flaw exists in the Linux kernel’s drm/msm/dpu subsystem where unallocated resources can be returned. Specifically, if a topology requests resources not created by the system, the dpu rm get assigned resources function may return an array containing null pointers instead of valid pointers, potentially leading to a system lockup due to null-pointer dereferences. The issue arises because the number of blocks returned can exceed the number of allocated blocks.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

BDU:2026-01139

CVE-2023-53991

SUSE-SU-2026:0263-1

SUSE-SU-2026:0317-1

SUSE-SU-2026:0411-1

SUSE-SU-2026:0617-1

Affected Products

Linux Kernel

References · 980

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53991.json · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2023-53991 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2023-53991 · Vendor Advisory
• https://bdu.fstec.ru/vul/2026-01139 · Security Note
• https://osv.dev/vulnerability/CVE-2023-53991 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2026:0317-1 · Vendor Advisory
• https://osv.dev/vulnerability/BELL-CVE-2023-53991 · Vendor Advisory
• https://ubuntu.com/security/CVE-2023-53991 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2023-53991 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2023-53991 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2023-53991 · Security Note
• https://osv.dev/vulnerability/SUSE-SU-2026:0617-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2026:0411-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2026:0263-1 · Vendor Advisory
• https://bugzilla.suse.com/1255996 · Note