net: mscc: ocelot: add missing lock protection in ocelot_port_xmit_inj()
Priority LOW 24CWE-667Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-667 and the CVSS impact.
Summary
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.
Why it matters now
EPSS 0.0014 3rd percentileScored 2026-11-07
Fix Fixed Linux (Linux): 6.1.165, 6.6.128, 6.11 +4
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Linux | Linux | 6.1.107 to before 6.1.165; 6.6.48 to before 6.6.128; 6.10.7 to before 6.11 | 6.1.165, 6.6.128, 6.11 | Patch available | CNA |
| Linux | Linux | 6.11 and later | 6.1.165, 6.6.128, 6.12.75, 6.18.14, 6.19.4, 7.0 | Patch available | CNA |
- Linux VendorLinux Affected 6.1.107 to before 6.1.165; 6.6.48 to before 6.6.128; 6.10.7 to before 6.11 Fixed in 6.1.165, 6.6.128, 6.11 Patch available CNA
- Linux VendorLinux Affected 6.11 and later Fixed in 6.1.165, 6.6.128, 6.12.75, 6.18.14, 6.19.4, 7.0 Patch available CNA
CPE configurations NVD · 5
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 6.1.107 to before 6.1.165; 6.6.48 to before 6.6.128; 6.10.7 to before 6.11; 6.11.1 to before 6.12.75; 6.13 to before 6.18.14; 6.19 to before 6.19.4 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.11:-:*:*:*:*:*:* | 6.11 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.11:rc5:*:*:*:*:*:* | 6.11 rc5 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.11:rc6:*:*:*:*:*:* | 6.11 rc6 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.11:rc7:*:*:*:*:*:* | 6.11 rc7 | Vulnerable | Linux |
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 6.1.107 to before 6.1.165; 6.6.48 to before 6.6.128; 6.10.7 to before 6.11; 6.11.1 to before 6.12.75; 6.13 to before 6.18.14; 6.19 to before 6.19.4 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.11:-:*:*:*:*:*:* Versions 6.11 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.11:rc5:*:*:*:*:*:* Versions 6.11 rc5 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.11:rc6:*:*:*:*:*:* Versions 6.11 rc6 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.11:rc7:*:*:*:*:*:* Versions 6.11 rc7 Vulnerable ·Linux
Remediation
- Fix · CNA Linux (Linux) Fixed in 6.1.165, 6.6.128, 6.11
- Fix · CNA Linux (Linux) Fixed in 6.1.165, 6.6.128, 6.12.75, 6.18.14, 6.19.4, 7.0
Vendor assessments
Red Hat
Not affected: 5 products
- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
Timeline
- 2026-10-02 Threatist record created from CVE-2026-45849
- 2026-10-03 Alias added: GHSA-v32h-7447-3j7r
References
Patch 6
- 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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Sources
- CVE-2026-45849 · CVE Program
- CVE-2026-45849 · NVD
- FIRST EPSS
- GHSA-v32h-7447-3j7r · GitHub Advisory Database · CC BY 4.0
- CVE-2026-45849 · Red Hat security data · CC BY 4.0
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