Threats Tagged 'cve-2026-45849'

A vulnerability in the Linux kernel's ocelot network driver involved missing lock protection in the function ocelot_port_xmit_inj(). This function called other functions that require holding a specific injection group lock, but the lock was not acquired, potentially leading to concurrency issues. The issue was fixed by adding the appropriate lock acquisition and release around the affected code path. The FDMA path is unaffected as it uses a different locking mechanism.

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.