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NVD / CVE Program· CNA Linux

CVE-2026-45849: net: mscc: ocelot: add missing lock protection in ocelot_port_xmit_inj()

Noroxi assessment

Priority: Monitor (action score 22/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.14% (FIRST EPSS).
  • Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: Linux Linux 026f6513c5880c2c89e38ad66bbec2868f978605, 0b217a40156f497e09dd20d3f7baec40c785f386, 51c32ae7fae14552d79f7139614b77c1bbd57a48.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Linux Linux 026f6513c5880c2c89e38ad66bbec2868f978605, 0b217a40156f497e09dd20d3f7baec40c785f386, 51c32ae7fae14552d79f7139614b77c1bbd57a48 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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.

MediumCVSS 5.5 · v3.1—No exploit Fix available
Published
May 27, 2026
Updated
Jun 25, 2026
EPSS
0.1% · 3th percentile

Report tools

JSON

Action score

22

Monitor

Low priority for now.

CVSS
22 / 40 · 5.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.1%

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

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When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
linuxlinux kernel

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • linux linux kernel6.1.107 and later · before 6.1.165
  • linux linux kernel6.6.48 and later · before 6.6.128
  • linux linux kernel6.10.7 and later · before 6.11
  • linux linux kernel6.11.1 and later · before 6.12.75
  • linux linux kernel6.13 and later · before 6.18.14
  • linux linux kernel6.19 and later · before 6.19.4
  • linux linux kernel6.11

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

  • Linux Linux

    • 609cd73bf38bbd48f1e695e01802114b01aa8811, 6.11affected
    • 960ec92774e152b677ccd0006abcab7b9dd814c2 and later · before 0b217a40156f497e09dd20d3f7baec40c785f386affected · git
    • e83b49ecb569c9c5fa7cc30e55cf2c15f71f9f39 and later · before cc1b179f778f98270bdbbb48d183b4b6427ae198affected · git
    • c5e12ac3beb0dd3a718296b2d8af5528e9ab728e and later · before 7ac58d8832802ec89baa7539e13e6d58a88cce04affected · git
    • c5e12ac3beb0dd3a718296b2d8af5528e9ab728e and later · before 51c32ae7fae14552d79f7139614b77c1bbd57a48affected · git
    • c5e12ac3beb0dd3a718296b2d8af5528e9ab728e and later · before 63da961381e0d979459dede713001f8452364477affected · git
    • c5e12ac3beb0dd3a718296b2d8af5528e9ab728e and later · before 026f6513c5880c2c89e38ad66bbec2868f978605affected · git
    • 6.1.107 and later · before 6.1.165affected · semver
    • 6.6.48 and later · before 6.6.128affected · semver
    • 6.10.7 and later · before 6.11affected · semver

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.170-16.1.170-1
Debian:13linuxbefore 6.12.85-16.12.85-1
Debian:14linuxbefore 6.18.14-16.18.14-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-31431crypto: algif_aead - Revert to operating out-of-placeKEV
    90Now
  • CVE-2022-0847A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe KEV
    89Now
  • CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV
    85Now

Published before and after this one in the same product

  • ← EarlierCVE-2026-45847May 27, 2026 · net: remove WARN_ON_ONCE when accessing forward path array
    22Monitor
  • ← EarlierCVE-2026-45848May 27, 2026 · apparmor: fix NULL sock in aa_sock_file_perm
    22Monitor
  • Later →CVE-2026-45851May 27, 2026 · efi: Fix reservation of unaccepted memory table
    28Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Linux Linux026f6513c5880c2c89e38ad66bbec2868f978605Vendor (CNA)
Linux Linux0b217a40156f497e09dd20d3f7baec40c785f386Vendor (CNA)
Linux Linux51c32ae7fae14552d79f7139614b77c1bbd57a48Vendor (CNA)
Linux Linux6.1.165Vendor (CNA)
Linux Linux6.11Vendor (CNA)
Linux Linux6.6.128Vendor (CNA)
Linux Linux63da961381e0d979459dede713001f8452364477Vendor (CNA)
Linux Linux7ac58d8832802ec89baa7539e13e6d58a88cce04Vendor (CNA)
Linux Linuxcc1b179f778f98270bdbbb48d183b4b6427ae198Vendor (CNA)
debian:linux6.1.170-1 · Debian:12Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

National notice (Türkiye Cybersecurity Directorate / USOM)

Official security notices citing this record; remediation advice is on the agency's page.

All national notices →

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
none
Availability
high · the service can be disrupted
Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
None
Availability impact
High

Weakness class (CWE)

CWE-667 · Improper Locking

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (5 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records