PT-2024-3854 · Linux+6 · Linux Kernel+6

Rémi Denis-Courmont · Published 2024-02-22 · Updated 2026-05-26 · CVE-2024-27402

Positive Technologies (AI Summary)

CVSS v3.1

5.8

Medium

Base vector

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

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

Description The issue is related to a race condition in the skb queue empty() function, where the receive queues are protected by their respective spin-lock, not the socket lock. This could lead to skb peek() unexpectedly returning NULL or a pointer to an already dequeued socket buffer. The vulnerability is also associated with the reuse of previously freed memory due to concurrent access to a resource, which could allow an attacker to cause a denial of service.

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

Exploit

Race Condition

Use After Free

Weakness Enumeration

CWE-362

CWE-416

Related Identifiers

BDU:2024-04234

CVE-2024-27402

OESA-2024-1706

OESA-2024-1707

OESA-2024-1736

OPENSUSE-SU-2024_2947-1

SUSE-SU-2024:2802-1

SUSE-SU-2024:2894-1

SUSE-SU-2024:2896-1

SUSE-SU-2024:2939-1

SUSE-SU-2024:2947-1

SUSE-SU-2024:2973-1

SUSE-SU-2025:20008-1

SUSE-SU-2025:20028-1

USN-7654-1

USN-7654-2

USN-7654-3

USN-7654-4

USN-7654-5

USN-7655-1

USN-7686-1

USN-7711-1

USN-7712-1

USN-7712-2

Affected Products

Astra Linux

Debian

Linuxmint

Linux Kernel

Red Os

Suse

Ubuntu

References · 2987

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/27xxx/CVE-2024-27402.json · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2023-52800 · Security Note
• https://ubuntu.com/security/CVE-2024-38541 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-38083 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-23157 · Vendor Advisory
• https://ubuntu.com/security/CVE-2024-46751 · Vendor Advisory
• https://osv.dev/vulnerability/USN-7655-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-22010 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2024-36919 · Security Note
• https://ubuntu.com/security/CVE-2025-22044 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-37741 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2024-35982 · Security Note
• https://ubuntu.com/security/CVE-2025-21956 · Vendor Advisory
• https://osv.dev/vulnerability/OESA-2024-1706 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-23158 · Vendor Advisory