CVE-2026-90080

CVE CVE-2026-90080EUVD EUVD-2026-81941Published 2026-09-17T16:05:58.000Z

What the advisory describes

In the Linux kernel, the following vulnerability has been resolved: octeontx2-pf: fix NULL deref of af_xdp_zc_qidx on rep setup af_xdp_zc_qidx tracks receive queues using AF_XDP zero-copy and is allocated during PF/VF probe. Representors and other non-AF_XDP paths leave the pointer NULL, but several call sites used test_bit() on it unconditionally. Switching to devlink eswitch mode creates representors and runs otx2_init_hw_resources(), which reaches otx2_pool_aq_init() and oopses when dereferencing the NULL bitmap. Add NULL checks before every af_xdp_zc_qidx test_bit() use in the RSS, ethtool, XSK, and pool init paths.

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 patch: 0; efabce29015189cb5cd8066cf29eb1d754de6c3c <7e33c6bd049b532d2ec4916895ef07e538bed905; 6.15; 9bd7273cf1f9c5761d696cca821d25602e8f7009; 6.14.9 <6.15; patch: 7.2.6; patch: 6.18.52; patch: 7.3-rc1; efabce29015189cb5cd8066cf29eb1d754de6c3c <b09a0503c755b6609fad59a84cc7f05b6843a03c; efabce29015189cb5cd8066cf29eb1d754de6c3c <b003d5b4e46ca5033859db601e12d36da24d0e40

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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