High 7.5Published May 8, 2026

CVE-2026-43296octeontx2-af: Workaround SQM/PSE stalls by disabling sticky

Updated under an hour ago (Oct 26, 2026, 6:40 PM ET)

Does this affect you?

It affects Linux and 1 other product. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

Do this next

Start free and add your stack

Free account, 1 product

Every CVE for Linux

Exploited in the last 30 days

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.

CVSS: 7.5 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Analyzed
Record last updated: Aug 5, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from 5d9b976d4480dc0dcfa3719b645636d2f0f9f156 before 9a3fd301329474f449e75f86d8a4f6b9c603fd6c; from 5d9b976d4480dc0dcfa3719b645636d2f0f9f156 before d0b3c8a80336029d9356f429151eb27922d80a3c; from 5d9b976d4480dc0dcfa3719b645636d2f0f9f156 before 36cc5a5e0178d5fb79e04173b8aa623b0108819a; from 5d9b976d4480dc0dcfa3719b645636d2f0f9f156 before d9b549b6951ba178ec14339a031cae65f4e43fe1; from 5d9b976d4480dc0dcfa3719b645636d2f0f9f156 before cec2ceb35ce7bc874c43812bb39200d6cf691b87; from 5d9b976d4480dc0dcfa3719b645636d2f0f9f156 before 8052d0587fb14b85539c3a14a226586c0c3d6b4c; from 5d9b976d4480dc0dcfa3719b645636d2f0f9f156 before b7eba260a34e854e2487b8363c11976f082df00d; from 5d9b976d4480dc0dcfa3719b645636d2f0f9f156 before 70e9a5760abfb6338d63994d4de6b0778ec795d6	CNA record
linux linux_kernel linux:linux_kernel	from 5.5 before 5.10.252; from 5.11 before 5.15.202; from 5.16 before 6.1.165; from 6.2 before 6.6.128; from 6.7 before 6.12.75; from 6.13 before 6.18.16; from 6.19 before 6.19.6	NVD

References

References

https://git.kernel.org/stable/c/9a3fd301329474f449e75f86d8a4f6b9c603fd6c	patch
https://git.kernel.org/stable/c/d0b3c8a80336029d9356f429151eb27922d80a3c	patch
https://git.kernel.org/stable/c/36cc5a5e0178d5fb79e04173b8aa623b0108819a	patch
https://git.kernel.org/stable/c/d9b549b6951ba178ec14339a031cae65f4e43fe1	patch
https://git.kernel.org/stable/c/cec2ceb35ce7bc874c43812bb39200d6cf691b87	patch
https://git.kernel.org/stable/c/8052d0587fb14b85539c3a14a226586c0c3d6b4c	patch
https://git.kernel.org/stable/c/b7eba260a34e854e2487b8363c11976f082df00d	patch
https://git.kernel.org/stable/c/70e9a5760abfb6338d63994d4de6b0778ec795d6	patch

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.