PT-2026-43716 · Linux+1 · Linux Kernel+1

CVE-2026-45849 · Published 2026-05-27 · Updated 2026-07-28

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 missing lock protection exists in the ocelot port xmit inj() function. This function calls ocelot can inject() and ocelot port inject frame() without holding the required injection group lock, despite both called functions utilizing lockdep assert held() to ensure the lock is active. While the felix port deferred xmit() caller correctly acquires the lock via ocelot lock inj grp(), the register injection path lacks this protection. The FDMA path is not impacted as it employs a separate locking mechanism.

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-667

Related Identifiers

CVE-2026-45849

USN-8492-1

USN-8492-2

USN-8492-3

USN-8492-4

USN-8492-5

USN-8497-1

USN-8498-1

USN-8499-1

USN-8606-1

USN-8607-1

USN-8609-1

USN-8619-1

Affected Products

Linuxmint

Linux Kernel

References · 1472

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45849.json · Exploit
• https://ubuntu.com/security/CVE-2026-31730 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-43445 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-31720 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-45938 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-63860 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-45991 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-68736 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-43227 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-23343 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-45999 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-53304 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-31725 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-46018 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-23339 · Vendor Advisory