PT-2025-38563 · Linux+2 · Linux Kernel+2

Published 2025-04-16 · Updated 2025-12-11 · CVE-2025-39856

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 null pointer dereference issue exists in the TX completion packet stage of TI SoCs with CPSW2G instances, which have a single external ethernet port. Accessing ndev without initialization, if no TX packets have been processed, results in a null pointer dereference, causing the kernel to crash. The issue is fixed by adding a check on the number of TX packets processed.

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:2025-13680

CVE-2025-39856

Affected Products

Astra Linux

Linux Kernel

Ti Socs

References · 17

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/39xxx/CVE-2025-39856.json · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2025-39856 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2025-39856 · Vendor Advisory
• https://bdu.fstec.ru/vul/2025-13680 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2025-39856 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-39856 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2025-39856 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2025-39856 · Vendor Advisory
• https://git.kernel.org/stable/c/a6099f263e1f408bcc7913c9df24b0677164fc5d · Patch
• https://cve.org/CVERecord?id=CVE-2025-39856 · Security Note
• https://git.kernel.org/stable/c/485302905bada953aadfe063320d73c892a66cbb · Patch
• https://t.me/CVEtracker/32943 · Telegram Post
• https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=485302905bada953aadfe063320d73c892a66cbb · Note
• https://twitter.com/CVEnew/status/1969110864394666166 · Twitter Post
• https://twitter.com/dailycve/status/1999243408330883289 · Twitter Post