CVE-2026-45849

What it is

In the Linux kernel, the following vulnerability has been resolved: net: mscc: ocelot: add missing lock protection in ocelot_port_xmit_inj() ocelot_port_xmit_inj() calls ocelot_can_inject() and ocelot_port_inject_frame() without holding the injection group lock. Both functions contain lockdep_assert_held() for the injection lock, and the correct caller felix_port_deferred_xmit() properly acquires the lock using ocelot_lock_inj_grp() before calling these functions. Add ocelot_lock_inj_grp()/ocelot_unlock_inj_grp() around the register injection path to fix the missing lock protection. The FDMA path is not affected as it uses its own locking mechanism.

At a glance

Exploitability

Can be exploited locally on the machine with a low-privilege account. High risk of service disruption.

Exploit odds

0.1% chance of exploitation in the next 30 days (EPSS).

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2026-05-27 14:16 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-25 21:03 UTC Last updatedMost recent change to the record

Details

Published

2026-05-27 14:16 UTC

Last modified

2026-06-25 21:03 UTC

Exploit probability

0.1% · EPSS, next 30 days

Weakness

CWE-667

Record status

Analyzed

Affected

• Linux Kernel < 6.1.165
• Linux Kernel < 6.6.128
• Linux Kernel < 6.11
• Linux Kernel < 6.12.75
• Linux Kernel < 6.18.14
• Linux Kernel < 6.19.4
• Linux Kernel 6.11

Attack profile CVSS 3.1 · 5.5

Attack vector

Local

Complexity

Low

Privileges needed

Low

User interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High