CVE-2026-43296

HIGH

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

Title source: cna
STIX 2.1

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.

Scores

CVSS v3 7.5
EPSS 0.0039
EPSS Percentile 30.9%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Details

CWE
CWE-667
Status published
Products (34)
linux/Kernel 5.11.0 - 5.15.202linux
linux/Kernel 5.16.0 - 6.1.165linux
linux/Kernel 5.5.0 - 5.10.252linux
linux/Kernel 6.13.0 - 6.18.16linux
linux/Kernel 6.19.0 - 6.19.6linux
linux/Kernel 6.2.0 - 6.6.128linux
linux/Kernel 6.7.0 - 6.12.75linux
Linux/Linux < 5.5
Linux/Linux 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 - 36cc5a5e0178d5fb79e04173b8aa623b0108819a
Linux/Linux 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 - 70e9a5760abfb6338d63994d4de6b0778ec795d6
... and 24 more
Published May 08, 2026
Tracked Since May 08, 2026