PT-2025-18848 · Linux+5 · Linux Kernel+5

Published 2023-02-27 · Updated 2026-01-28 · CVE-2023-53084

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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

Description A use-after-free issue exists due to the premature freeing of the dma-buf shmem GEM object. This occurs because drm gem shmem mmap() does not own a reference in the error code path. The issue is related to the drm/shmem-helper and the drm gem shmem mmap() function.

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

Exploit

Buffer Overflow

Use After Free

Weakness Enumeration

CWE-119

CWE-416

Related Identifiers

ALSA-2025_16880

BDU:2026-03853

CESA-2023_7077

CVE-2023-53084

RHSA-2023:6583

RHSA-2023:7077

RHSA-2023_6583

RHSA-2023_7077

SUSE-SU-2025:01918-1

SUSE-SU-2025:01966-1

SUSE-SU-2025:02173-1

SUSE-SU-2025:02262-1

SUSE-SU-2025:2173-1

SUSE-SU-2025_02173-1

SUSE-SU-2025_02262-1

Affected Products

Astra Linux

Centos

Linux Kernel

Red Hat

Red Os

Suse

References · 457

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53084.json · Exploit
• https://git.kernel.org/stable/c/dede8c14a37a7ac458f9add56154a074ed78e7cf · Patch
• https://git.kernel.org/stable/c/684c7372bbd6447c2e86a2a84e97a1478604d21f · Patch
• https://security-tracker.debian.org/tracker/CVE-2023-53084 · Vendor Advisory
• https://ubuntu.com/security/CVE-2023-53084 · Vendor Advisory
• https://git.kernel.org/stable/c/5cfb617967b05f8f27e862c97db1fabd8485f4db · Patch
• https://osv.dev/vulnerability/CVE-2023-53084 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:01966-1 · Vendor Advisory
• https://osv.dev/vulnerability/BELL-CVE-2023-53084 · Vendor Advisory
• https://git.kernel.org/stable/c/ee9adb7a45516cfa536ca92253d7ae59d56db9e4 · Patch
• https://git.kernel.org/stable/c/77d26c824aa5a7e0681ef1d5b75fe538d746addc · Patch
• https://osv.dev/vulnerability/SUSE-SU-2025:02262-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:01918-1 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2023-53084 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2023-53084 · Vendor Advisory