{"id":"CVE-2026-90080","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nocteontx2-pf: fix NULL deref of af_xdp_zc_qidx on rep setup\n\naf_xdp_zc_qidx tracks receive queues using AF_XDP zero-copy and is\nallocated during PF/VF probe","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nocteontx2-pf: fix NULL deref of af_xdp_zc_qidx on rep setup\n\naf_xdp_zc_qidx tracks receive queues using AF_XDP zero-copy and is\nallocated during PF/VF probe. Represento…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= efabce29015189cb5cd8066cf29eb1d754de6c3c < b003d5b4e46ca5033859db601e12d36da24d0e40","Linux >= efabce29015189cb5cd8066cf29eb1d754de6c3c < 7e33c6bd049b532d2ec4916895ef07e538bed905","Linux >= efabce29015189cb5cd8066cf29eb1d754de6c3c < b09a0503c755b6609fad59a84cc7f05b6843a03c","Linux 9bd7273cf1f9c5761d696cca821d25602e8f7009","Linux >= 6.14.9 < 6.15","Linux 6.15"],"published":"2026-09-17","updated":"2026-09-17","sourceUpdated":"2026-09-17T17:16:57.317","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-90080","references":[{"url":"https://git.kernel.org/stable/c/7e33c6bd049b532d2ec4916895ef07e538bed905","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/b003d5b4e46ca5033859db601e12d36da24d0e40","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/b09a0503c755b6609fad59a84cc7f05b6843a03c","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-09-17T16:21:47.895Z","epss":0.00198,"epssPercentile":0.09813,"slug":"CVE-2026-90080","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nocteontx2-pf: fix NULL deref of af_xdp_zc_qidx on rep setup\n\naf_xdp_zc_qidx tracks receive queues using AF_XDP zero-copy and is\nallocated during PF/VF probe. Representors and other non-AF_XDP paths\nleave the pointer NULL, but several call sites used test_bit() on it\nunconditionally.\n\nSwitching to devlink eswitch mode creates representors and runs\notx2_init_hw_resources(), which reaches otx2_pool_aq_init() and oopses\nwhen dereferencing the NULL bitmap. Add NULL checks before every\naf_xdp_zc_qidx test_bit() use in the RSS, ethtool, XSK, and pool init\npaths.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}