Skip to content
Noroxi
NVD / CVE Program· CNA Linux

CVE-2026-46249: octeontx2-af: Fix PF driver crash with kexec kernel booting

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: 0.11% (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 1370736836a18b5e0cd74bcc9cffe11d21f1fe79, 2d2d574309e3ae84ee794869a5da8b4c38753a94, 57821d1436ba1c6a6973aa32d54166fdec35558c.

Low priority for now. Upgrade to Linux Linux 1370736836a18b5e0cd74bcc9cffe11d21f1fe79, 2d2d574309e3ae84ee794869a5da8b4c38753a94, 57821d1436ba1c6a6973aa32d54166fdec35558c 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: octeontx2-af: Fix PF driver crash with kexec kernel booting During a kexec reboot the hardware is not power-cycled, so AF state from the old kernel can persist into the new kernel. When AF and PF drivers are built as modules, the PF driver may probe before AF reinitializes the hardware. The PF driver treats the RVUM block revision as an indication that AF initialization is complete. If this value is left uncleared at shutdown, PF may incorrectly assume AF is ready and access stale hardware state, leading to a crash. Clear the RVUM block revision during AF shutdown to avoid PF mis-detecting AF readiness after kexec.

MediumCVSS 5.5 · v3.1—No exploit Fix available
Published
Jun 3, 2026
Updated
Jul 22, 2026
EPSS
0.1% · 1th percentile
CWE
—

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.

Follow CVE-2026-46249

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

One daily email digest (06:00 UTC); connect a webhook for KEV listings and weaponized exploits instantly.

Your free account also gets you

Running WordPress? Scan your site free with WP Lens

  • Stack alerts: add the products and versions you run, get the new CVEs that affect them
  • Uptime monitoring: 1 site, instant email when it goes down
  • Add your domain: subdomains and takeover risk scanned every week (1 domain)
  • 10 scans an hour on the security tools (3 a day without an account), an API key and MCP
  • All your scans in one panel: findings, what changed in the last scan, a report per domain or per client (PDF, share link)
All free tools

Sign up with email · Have an account? Sign in

Free account, no card. Unfollow any time.

Don't want an account? Get "Exploited this week" by email every MondayDon't want an account? RSS feed for linux records

Running WordPress? Scan your site free with WP Lens

Is your version affected? Check it

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.

We use this product, ask for help

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 kernel4.20 and later · before 5.10.252
  • linux linux kernel5.11 and later · before 5.15.202
  • linux linux kernel5.16 and later · before 6.1.165
  • linux linux kernel6.2 and later · before 6.6.128
  • linux linux kernel6.7 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

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

    • 4.20affected
    • 54494aa5d1e68945dc79feb7c8461cd382e11d8a and later · before b7605b9301abc18fbbf2b0e23fdd281fc768955daffected · git
    • 54494aa5d1e68945dc79feb7c8461cd382e11d8a and later · before 9769a09afda20a006b528b9e723effcae45965b2affected · git
    • 54494aa5d1e68945dc79feb7c8461cd382e11d8a and later · before 57821d1436ba1c6a6973aa32d54166fdec35558caffected · git
    • 54494aa5d1e68945dc79feb7c8461cd382e11d8a and later · before 8b5ed7c5417b7013d35b6f2507dab739013ba1a9affected · git
    • 54494aa5d1e68945dc79feb7c8461cd382e11d8a and later · before 7d56ba306e93d04696718963fb4cda2883ee7585affected · git
    • 54494aa5d1e68945dc79feb7c8461cd382e11d8a and later · before 9c3398e5b3a914b74276d44ab54c49123b89c61aaffected · git
    • 54494aa5d1e68945dc79feb7c8461cd382e11d8a and later · before 1370736836a18b5e0cd74bcc9cffe11d21f1fe79affected · git
    • 54494aa5d1e68945dc79feb7c8461cd382e11d8a and later · before 2d2d574309e3ae84ee794869a5da8b4c38753a94affected · git
    • before 4.20not affected · 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-2026-46247Jun 3, 2026 · clk: qcom: gfx3d: add parent to parent request map
    22Monitor
  • ← EarlierCVE-2026-46248Jun 3, 2026 · wifi: ath12k: clear stale link mapping of ahvif->links_map
    22Monitor
  • Later →CVE-2026-46250Jun 3, 2026 · MIPS: Work around LLVM bug when gp is used as global register variable
    29Monitor

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 Linux1370736836a18b5e0cd74bcc9cffe11d21f1fe79Vendor (CNA)
Linux Linux2d2d574309e3ae84ee794869a5da8b4c38753a94Vendor (CNA)
Linux Linux57821d1436ba1c6a6973aa32d54166fdec35558cVendor (CNA)
Linux Linux7d56ba306e93d04696718963fb4cda2883ee7585Vendor (CNA)
Linux Linux8b5ed7c5417b7013d35b6f2507dab739013ba1a9Vendor (CNA)
Linux Linux9769a09afda20a006b528b9e723effcae45965b2Vendor (CNA)
Linux Linux9c3398e5b3a914b74276d44ab54c49123b89c61aVendor (CNA)
Linux Linuxb7605b9301abc18fbbf2b0e23fdd281fc768955dVendor (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).

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)

—

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.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. Fix✗ → ✓

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

References

Show all references (7 more)

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

All records