PT-2025-35990 · Linux+2 · Linux Kernel+2

Syzbot · Published 2025-08-12 · Updated 2026-04-20 · CVE-2025-38717

Positive Technologies (AI Summary)

CVSS v3.1

4.7

Medium

Base vector

AV:L/AC:H/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 race condition was identified in the kcm unattach() function within the kernel's networking subsystem. Specifically, the function lacked a check of the kcm->tx stopped flag before calling queue work(). This could lead to a situation where kcm unattach() is executed concurrently with kcm release(), potentially requeuing kcm->tx work immediately before the kcm structure is freed in kcm done(). The issue was discovered by syzbot.

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

AZL-66887

AZL-70783

BDU:2026-02854

CVE-2025-38717

ECHO-3C02-4648-A9FA

OESA-2025-2765

OESA-2025-2766

OESA-2025-2767

OPENSUSE-SU-2025:20081-1

SUSE-SU-2025:21074-1

SUSE-SU-2025:21139-1

SUSE-SU-2025:21179-1

Affected Products

Debian

Linux Kernel

Suse

References · 1351

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/38xxx/CVE-2025-38717.json · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2025-39992 · Security Note
• https://bdu.fstec.ru/vul/2026-02854 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2025-40123 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2025-40167 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2025-40134 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2025-38717 · Vendor Advisory
• https://osv.dev/vulnerability/ROOT-OS-DEBIAN-12-CVE-2025-38717 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-38581 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2025-40120 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2025-39940 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2025-40211 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2025-38011 · Security Note
• https://ubuntu.com/security/CVE-2025-38717 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-38214 · Security Note