{"id":"CVE-2026-90080","state":"PUBLISHED","title":"octeontx2-pf: fix NULL deref of af_xdp_zc_qidx on rep setup","description":"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. 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.","publishedAt":"2026-09-17T16:05:58.199Z","updatedAt":"2026-10-19T08:57:36.840Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"efabce29015189cb5cd8066cf29eb1d754de6c3c","status":"affected","lessThan":"b003d5b4e46ca5033859db601e12d36da24d0e40","versionType":"git"},{"version":"efabce29015189cb5cd8066cf29eb1d754de6c3c","status":"affected","lessThan":"7e33c6bd049b532d2ec4916895ef07e538bed905","versionType":"git"},{"version":"efabce29015189cb5cd8066cf29eb1d754de6c3c","status":"affected","lessThan":"b09a0503c755b6609fad59a84cc7f05b6843a03c","versionType":"git"},{"version":"9bd7273cf1f9c5761d696cca821d25602e8f7009","status":"affected","versionType":"git"},{"version":"6.14.9","status":"affected","lessThan":"6.15","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.c","drivers/net/ethernet/marvell/octeontx2/nic/otx2_ethtool.c","drivers/net/ethernet/marvell/octeontx2/nic/otx2_xsk.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.15","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.15","versionType":"semver"},{"version":"6.18.52","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.6","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.c","drivers/net/ethernet/marvell/octeontx2/nic/otx2_ethtool.c","drivers/net/ethernet/marvell/octeontx2/nic/otx2_xsk.c"]}],"references":["https://git.kernel.org/stable/c/b003d5b4e46ca5033859db601e12d36da24d0e40","https://git.kernel.org/stable/c/7e33c6bd049b532d2ec4916895ef07e538bed905","https://git.kernel.org/stable/c/b09a0503c755b6609fad59a84cc7f05b6843a03c"],"weaknesses":[],"ingestedAt":"2026-10-29T20:13:34.582Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/90xxx/CVE-2026-90080.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-90080","state":"PUBLISHED","datePublished":"2026-09-17T16:05:58.199Z","dateUpdated":"2026-10-19T08:57:36.840Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-09-11T19:38:34.785Z"},"containers":{"cna":{"title":"octeontx2-pf: fix NULL deref of af_xdp_zc_qidx on rep setup","descriptions":[{"lang":"en","value":"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. 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."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"efabce29015189cb5cd8066cf29eb1d754de6c3c","status":"affected","lessThan":"b003d5b4e46ca5033859db601e12d36da24d0e40","versionType":"git"},{"version":"efabce29015189cb5cd8066cf29eb1d754de6c3c","status":"affected","lessThan":"7e33c6bd049b532d2ec4916895ef07e538bed905","versionType":"git"},{"version":"efabce29015189cb5cd8066cf29eb1d754de6c3c","status":"affected","lessThan":"b09a0503c755b6609fad59a84cc7f05b6843a03c","versionType":"git"},{"version":"9bd7273cf1f9c5761d696cca821d25602e8f7009","status":"affected","versionType":"git"},{"version":"6.14.9","status":"affected","lessThan":"6.15","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.c","drivers/net/ethernet/marvell/octeontx2/nic/otx2_ethtool.c","drivers/net/ethernet/marvell/octeontx2/nic/otx2_xsk.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.15","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.15","versionType":"semver"},{"version":"6.18.52","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.6","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.c","drivers/net/ethernet/marvell/octeontx2/nic/otx2_ethtool.c","drivers/net/ethernet/marvell/octeontx2/nic/otx2_xsk.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/b003d5b4e46ca5033859db601e12d36da24d0e40"},{"url":"https://git.kernel.org/stable/c/7e33c6bd049b532d2ec4916895ef07e538bed905"},{"url":"https://git.kernel.org/stable/c/b09a0503c755b6609fad59a84cc7f05b6843a03c"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-19T08:57:36.840Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.15","versionEndExcluding":"6.18.52"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.15","versionEndExcluding":"7.2.6"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.15","versionEndExcluding":"7.3"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.14.9"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}