PT-2025-37330 · Linux+1 · Linux Kernel+1

Davem · CVE-2025-39796 · Published 2025-08-06 · Updated 2025-11-24

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: The Linux kernel contains a flaw related to lock dependency in xsk notify triggered via register netdevice. Specifically, the issue arises from using register netdevice within notifiers, which is problematic. The fix involves skipping the addition of lapbeth for operations-locked devices. The vulnerability was identified through Syzkaller testing. The call chain involves functions such as xsk notifier, notifier call chain, register netdevice, and lapbeth device event.

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

Exploit

Race Condition

Weakness Enumeration

CWE-362

Related Identifiers

BDU:2026-09152

CVE-2025-39796

Affected Products

Astra Linux

Linux Kernel

References · 22

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/39xxx/CVE-2025-39796.json · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2025-39796 · Security Note
• https://git.kernel.org/stable/c/57a7ef338a2cd62a22a15a199ab9afd3d953df55 · Patch
• https://cve.org/CVERecord?id=CVE-2025-39796 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2025-39796 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2025-39796 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2025-39796 · Vendor Advisory
• https://osv.dev/vulnerability/BELL-CVE-2025-39796 · Vendor Advisory
• https://git.kernel.org/stable/c/628e233c1fefcc227fae9bdcff6be8ac92e1b4d2 · Patch
• https://ubuntu.com/security/CVE-2025-39796 · Vendor Advisory
• https://bdu.fstec.ru/vul/2026-09152 · Security Note
• https://git.kernel.org/stable/c/53898ebabe843bfa7baea9dae152797d5d0563c9 · Patch
• https://security-tracker.debian.org/tracker/CVE-2025-39796 · Vendor Advisory
• https://git.kernel.org/linus/53898ebabe843bfa7baea9dae152797d5d0563c9 · Note
• https://twitter.com/CVEnew/status/1966536911947694358 · Twitter Post