CVE-2026-45849
net: mscc: ocelot: add missing lock protection in ocelot_port_xmit_inj()
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Description
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.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
- https://git.kernel.org/stable/c/0b217a40156f497e09dd20d3f7baec40c785f386
- https://git.kernel.org/stable/c/cc1b179f778f98270bdbbb48d183b4b6427ae198
- https://git.kernel.org/stable/c/7ac58d8832802ec89baa7539e13e6d58a88cce04
- https://git.kernel.org/stable/c/51c32ae7fae14552d79f7139614b77c1bbd57a48
- https://git.kernel.org/stable/c/63da961381e0d979459dede713001f8452364477
References (6)
CVSS
- Attack Vector
- LOCAL
- Complexity
- LOW
- Privileges
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- NONE
- Integrity
- NONE
- Availability
- HIGH
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