CVE-2026-97966
CVE CVE-2026-97966EUVD EUVD-2026-86820Published 2026-09-25T10:23:08.000Z
What the advisory describes
In the Linux kernel, the following vulnerability has been resolved: octeontx2-pf: reset HTB scheduler topology before freeing queues HTB offload programs NIX_AF_TLxX_TOPOLOGY on QoS-allocated scheduler queues via otx2_qos_txschq_set_parent_topology(), but teardown freed those queues without clearing TOPOLOGY. The AF only restores PARENT and SCHEDULE on free, so PRIO_ANCHOR/RR_PRIO settings can survive in the shared scheduler pool and affect later allocations. Add otx2_qos_reset_schq_topology() and otx2_qos_free_hw_schq() to zero TL4 through TL2 TOPOLOGY before each schq is returned to the AF during hierarchy teardown and cfg rollback. Skip the aggregation level (TL1): it is a per-tx-link queue shared by the PF, default Tx hierarchy and VFs, and is not freed back to the AF by nix_txschq_free_one().
Source: EUVD (ENISA), in the words of the advisory.
Products the advisory names
These come from the advisory itself, not from any check we performed.
- Linux — Linux 5e6808b4c68d7882971514ab3279926eb07c8b2d <0aa2dd6eaa347c7aab448df0eec0afcfe7489885; patch: 6.18.53; patch: 0; 5e6808b4c68d7882971514ab3279926eb07c8b2d <2df186418e17b30b319cf9ff81aad137692ab107; 5e6808b4c68d7882971514ab3279926eb07c8b2d <621c99be42e3f5cb68a6af9480a255218a761c4e; patch: 7.3-rc3; 5e6808b4c68d7882971514ab3279926eb07c8b2d <ef39fca8508597fa565cf2be72a884a712fb98af; 6.5; patch: 7.2.7; patch: 6.12.111
The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.
Carried in the product catalogue
An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.
- Linux — Linux
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