PT-2024-30719 · Linux · Linux Kernel

Published 2024-07-30 · Updated 2024-09-03 · CVE-2024-43862

Positive Technologies (AI Summary)

CVSS v2.0

7.5

High

Base vector

AV:N/AC:L/Au:N/C:P/I:P/A:P

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

Description The issue is related to the Linux kernel, specifically with the fsl qmc hdlc module. The carrier lock spinlock protects the carrier detection, but while it is held, framer get status() is called, which in turn takes a mutex. This can lead to a deadlock. A run with PROVE LOCKING enabled detected the issue, showing an invalid wait context. The problem occurs when two locks are held by ifconfig/146: rtnl mutex and qmc hdlc->carrier lock. To avoid the deadlock, the carrier lock spinlock should be converted to a mutex.

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

Exploit

Improper Locking

Weakness Enumeration

CWE-833

CWE-667

Related Identifiers

BDU:2025-02953

CVE-2024-43862

Affected Products

Linux Kernel

References · 22

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/43xxx/CVE-2024-43862.json · Exploit
• https://osv.dev/vulnerability/DEBIAN-CVE-2024-43862 · Vendor Advisory
• https://bdu.fstec.ru/vul/2025-02953 · Security Note
• https://git.kernel.org/stable/c/c4d6a347ba7babdf9d90a0eb24048c266cae0532 · Patch
• https://osv.dev/vulnerability/CVE-2024-43862 · Vendor Advisory
• https://git.kernel.org/stable/c/f223d2b4acb7a45a6e0581cb380e1af1a6dc7ab9 · Patch
• https://osv.dev/vulnerability/BELL-CVE-2024-43862 · Vendor Advisory
• https://ubuntu.com/security/CVE-2024-43862 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2024-43862 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2024-43862 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2024-43862 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2024-43862 · Vendor Advisory
• https://docs.bell-sw.com/security/cves/CVE-2024-43862 · Note
• https://kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.10.4 · Note
• https://t.me/cvenotify/93045 · Telegram Post