CVE-2026-46249octeontx2-af: Fix PF driver crash with kexec kernel booting
- 5.5MediumCVSS base score
- 0.11%Exploitation in 30 daysEPSS · top 98% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
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.
Timeline
ID reserved
By Linux
- 21 days later
· 21 days later
Published
- 5 months later
· 5 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Analyzed | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.11% · top 98% of all CVEs (15 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.
Affected products
- affected 54494aa5d1e68945dc79feb7c8461cd382e11d8a – < b7605b9301abc18fbbf2b0e23fdd281fc768955d
- affected 54494aa5d1e68945dc79feb7c8461cd382e11d8a – < 9769a09afda20a006b528b9e723effcae45965b2
- affected 54494aa5d1e68945dc79feb7c8461cd382e11d8a – < 57821d1436ba1c6a6973aa32d54166fdec35558c
- affected 54494aa5d1e68945dc79feb7c8461cd382e11d8a – < 8b5ed7c5417b7013d35b6f2507dab739013ba1a9
- affected 54494aa5d1e68945dc79feb7c8461cd382e11d8a – < 7d56ba306e93d04696718963fb4cda2883ee7585
- affected 54494aa5d1e68945dc79feb7c8461cd382e11d8a – < 9c3398e5b3a914b74276d44ab54c49123b89c61a
- affected 54494aa5d1e68945dc79feb7c8461cd382e11d8a – < 1370736836a18b5e0cd74bcc9cffe11d21f1fe79
- affected 54494aa5d1e68945dc79feb7c8461cd382e11d8a – < 2d2d574309e3ae84ee794869a5da8b4c38753a94
- affected 4.20
- unaffected < 4.20
- unaffected 5.10.252 – ≤ 5.10.*
- unaffected 5.15.202 – ≤ 5.15.*
- unaffected 6.1.165 – ≤ 6.1.*
- unaffected 6.6.128 – ≤ 6.6.*
- unaffected 6.12.75 – ≤ 6.12.*
- unaffected 6.18.14 – ≤ 6.18.*
- unaffected 6.19.4 – ≤ 6.19.*
- unaffected 7.0 – ≤ *
References
References8
- https://git.kernel.org/stable/c/b7605b9301abc18fbbf2b0e23fdd281fc768955d (opens in a new tab)
- https://git.kernel.org/stable/c/9769a09afda20a006b528b9e723effcae45965b2 (opens in a new tab)
- https://git.kernel.org/stable/c/57821d1436ba1c6a6973aa32d54166fdec35558c (opens in a new tab)
- https://git.kernel.org/stable/c/8b5ed7c5417b7013d35b6f2507dab739013ba1a9 (opens in a new tab)
- https://git.kernel.org/stable/c/7d56ba306e93d04696718963fb4cda2883ee7585 (opens in a new tab)
- https://git.kernel.org/stable/c/9c3398e5b3a914b74276d44ab54c49123b89c61a (opens in a new tab)
- https://git.kernel.org/stable/c/1370736836a18b5e0cd74bcc9cffe11d21f1fe79 (opens in a new tab)
- https://git.kernel.org/stable/c/2d2d574309e3ae84ee794869a5da8b4c38753a94 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-34111 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-46249)Record last updated .