PT-2025-34433 · Linux+1 · Linux Kernel+1

Published 2025-07-17 · Updated 2026-05-26 · CVE-2025-38672

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

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

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

Description: A flaw exists due to an unstable dma buf field within the drm gem object structure in the Linux kernel. The field can become NULL when user space releases the final GEM handle on the buffer object, leading to a NULL-pointer dereference. Previous workarounds did not fully address the issue, particularly for buffer objects without an associated DRM framebuffer. The issue was resolved by reverting a prior commit.

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

Exploit

Improper Resource Release

NULL Pointer Dereference

Weakness Enumeration

CWE-404

CWE-476

Related Identifiers

BDU:2026-01336

CVE-2025-38672

Affected Products

Astra Linux

Linux Kernel

References · 18

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/38xxx/CVE-2025-38672.json · Exploit
• https://cve.org/CVERecord?id=CVE-2025-38672 · Security Note
• https://osv.dev/vulnerability/CVE-2025-38672 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-38672 · Security Note
• https://bdu.fstec.ru/vul/2026-01336 · Security Note
• https://git.kernel.org/stable/c/e7bdb3104a2f71ec1439d37f8e6e2f201dbcd7cf · Patch
• https://osv.dev/vulnerability/UBUNTU-CVE-2025-38672 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-38672 · Vendor Advisory
• https://osv.dev/vulnerability/ROOT-OS-UBUNTU-2204-CVE-2025-38672 · Vendor Advisory
• https://git.kernel.org/stable/c/1918e79be908b8a2c8757640289bc196c14d928a · Patch
• https://osv.dev/vulnerability/ROOT-OS-UBUNTU-2404-CVE-2025-38672 · Vendor Advisory
• https://lore.kernel.org/linux-cve-announce/2025082201-CVE-2025-38672-f53c@gregkh · Note
• https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git · Note
• https://access.redhat.com/security/cve/cve-2025-38672 · Note
• https://git.kernel.org/linus/1918e79be908b8a2c8757640289bc196c14d928a · Note