CVE-2026-43296octeontx2-af: Workaround SQM/PSE stalls by disabling sticky
- 7.5HighCVSS base score
- 0.39%Exploitation in 30 daysEPSS · top 67% 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: Workaround SQM/PSE stalls by disabling sticky NIX SQ manager sticky mode is known to cause stalls when multiple SQs share an SMQ and transmit concurrently. Additionally, PSE may deadlock on transitions between sticky and non-sticky transmissions. There is also a credit drop issue observed when certain condition clocks are gated. work around these hardware errata by: - Disabling SQM sticky operation: - Clear TM6 (bit 15) - Clear TM11 (bit 14) - Disabling sticky → non-sticky transition path that can deadlock PSE: - Clear TM5 (bit 23) - Preventing credit drops by keeping the control-flow clock enabled: - Set TM9 (bit 21) These changes are applied via NIX_AF_SQM_DBG_CTL_STATUS. With this configuration the SQM/PSE maintain forward progress under load without credit loss, at the cost of disabling sticky optimizations.
Timeline
ID reserved
By Linux
- 7 days later
· 7 days later
Published
- 3 months later
· 3 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 |
|---|---|---|---|
| LinuxCNA (assigner) | 3.1 | High7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| NVDNVD · Analyzed | 3.1 | High7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.39% · top 67% of all CVEs (15 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.
Affected products
- affected 5d9b976d4480dc0dcfa3719b645636d2f0f9f156 – < 9a3fd301329474f449e75f86d8a4f6b9c603fd6c
- affected 5d9b976d4480dc0dcfa3719b645636d2f0f9f156 – < d0b3c8a80336029d9356f429151eb27922d80a3c
- affected 5d9b976d4480dc0dcfa3719b645636d2f0f9f156 – < 36cc5a5e0178d5fb79e04173b8aa623b0108819a
- affected 5d9b976d4480dc0dcfa3719b645636d2f0f9f156 – < d9b549b6951ba178ec14339a031cae65f4e43fe1
- affected 5d9b976d4480dc0dcfa3719b645636d2f0f9f156 – < cec2ceb35ce7bc874c43812bb39200d6cf691b87
- affected 5d9b976d4480dc0dcfa3719b645636d2f0f9f156 – < 8052d0587fb14b85539c3a14a226586c0c3d6b4c
- affected 5d9b976d4480dc0dcfa3719b645636d2f0f9f156 – < b7eba260a34e854e2487b8363c11976f082df00d
- affected 5d9b976d4480dc0dcfa3719b645636d2f0f9f156 – < 70e9a5760abfb6338d63994d4de6b0778ec795d6
- affected 5.5
- unaffected < 5.5
- 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 6.18.16 – ≤ 6.18.*
- unaffected 6.19.6 – ≤ 6.19.*
- unaffected 7.0 – ≤ *
References
References8
- https://git.kernel.org/stable/c/9a3fd301329474f449e75f86d8a4f6b9c603fd6c (opens in a new tab)
- https://git.kernel.org/stable/c/d0b3c8a80336029d9356f429151eb27922d80a3c (opens in a new tab)
- https://git.kernel.org/stable/c/36cc5a5e0178d5fb79e04173b8aa623b0108819a (opens in a new tab)
- https://git.kernel.org/stable/c/d9b549b6951ba178ec14339a031cae65f4e43fe1 (opens in a new tab)
- https://git.kernel.org/stable/c/cec2ceb35ce7bc874c43812bb39200d6cf691b87 (opens in a new tab)
- https://git.kernel.org/stable/c/8052d0587fb14b85539c3a14a226586c0c3d6b4c (opens in a new tab)
- https://git.kernel.org/stable/c/b7eba260a34e854e2487b8363c11976f082df00d (opens in a new tab)
- https://git.kernel.org/stable/c/70e9a5760abfb6338d63994d4de6b0778ec795d6 (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-2026-28566 (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-2026-43296)Record last updated .