PT-2024-21454 · Linux+5 · Linux Kernel+5

Published 2024-04-02 · Updated 2026-03-14 · CVE-2024-26677

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 The issue concerns the construction of delayed ACKs in the Linux kernel, specifically in the rxrpc module. The problem arises because delayed ACKs are not supposed to set the reference serial number, as they cannot be used as a reference for Round-Trip Time (RTT). This is due to the nature of delayed ACKs, which are acknowledgments sent after a certain delay, and thus, their timing does not accurately reflect the RTT.

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

AZL-58701

CVE-2024-26677

ECHO-F189-A1C2-EEB7

OPENSUSE-SU-2024_3190-1

OPENSUSE-SU-2024_3209-1

OPENSUSE-SU-2024_3483-1

SUSE-SU-2024:3189-1

SUSE-SU-2024:3190-1

SUSE-SU-2024:3194-1

SUSE-SU-2024:3195-1

SUSE-SU-2024:3209-1

SUSE-SU-2024:3251-1

SUSE-SU-2024:3252-1

SUSE-SU-2024:3383-1

SUSE-SU-2024:3483-1

SUSE-SU-2025:20044-1

SUSE-SU-2025:20047-1

USN-6895-1

USN-6895-2

USN-6895-3

USN-6895-4

USN-6900-1

USN-7021-1

USN-7021-2

USN-7021-3

USN-7021-4

USN-7021-5

USN-7022-1

USN-7022-2

USN-7022-3

USN-7028-1

USN-7028-2

USN-7039-1

USN-7119-1

Affected Products

Astra Linux

Debian

Linuxmint

Linux Kernel

Suse

Ubuntu

References · 1535

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/26xxx/CVE-2024-26677.json · Exploit
• https://ubuntu.com/security/CVE-2023-52642 · Vendor Advisory
• https://ubuntu.com/security/CVE-2024-26698 · Vendor Advisory
• https://ubuntu.com/security/CVE-2024-26601 · Vendor Advisory
• https://ubuntu.com/security/CVE-2024-27398 · Vendor Advisory
• https://ubuntu.com/security/CVE-2024-45026 · Vendor Advisory
• https://ubuntu.com/security/CVE-2024-46815 · Vendor Advisory
• https://ubuntu.com/security/CVE-2024-43884 · Vendor Advisory
• https://ubuntu.com/security/CVE-2024-26602 · Vendor Advisory
• https://ubuntu.com/security/CVE-2023-52643 · Vendor Advisory
• https://ubuntu.com/security/CVE-2022-48791 · Vendor Advisory
• https://ubuntu.com/security/CVE-2024-26668 · Vendor Advisory
• https://ubuntu.com/security/CVE-2024-26640 · Vendor Advisory
• https://ubuntu.com/security/CVE-2024-46737 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-6895-2 · Vendor Advisory