PT-2025-34435 · Linux+1 · Linux Kernel+1

Published 2025-07-17 · Updated 2026-04-20 · CVE-2025-38674

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 in the Linux kernel related to a reversion of a previous commit (f83a9b8c7fd0557b0c50784bfdc1bbe9140c9bf8) concerning the handling of dma buf within drm gem object. The dma buf field becomes NULL when the final GEM handle is released, leading to a NULL-pointer dereference. Previous workarounds did not fully address the issue, particularly for buffer objects without an associated DRM framebuffer. The reversion restores the use of .import attach->dmabuf.

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:2026-01333

CVE-2025-38674

Affected Products

Astra Linux

Linux Kernel

References · 17

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/38xxx/CVE-2025-38674.json · Exploit
• https://osv.dev/vulnerability/CVE-2025-38674 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-38674 · Security Note
• https://git.kernel.org/stable/c/5f05d83ce689a8930a70dfa73f879604aef8cc03 · Patch
• https://bdu.fstec.ru/vul/2026-01333 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2025-38674 · Vendor Advisory
• https://osv.dev/vulnerability/ROOT-OS-UBUNTU-2204-CVE-2025-38674 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-38674 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2025-38674 · Security Note
• https://osv.dev/vulnerability/ROOT-OS-UBUNTU-2404-CVE-2025-38674 · Vendor Advisory
• https://git.kernel.org/stable/c/fb4ef4a52b79a22ad382bfe77332642d02aef773 · Patch
• https://twitter.com/CVEnew/status/1958933875637252182 · Twitter Post
• https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git · Note
• https://kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.15.9 · Note
• https://git.kernel.org/linus/fb4ef4a52b79a22ad382bfe77332642d02aef773 · Note