{ "cveId": "CVE-2026-90086", "url": "https://patchblox.com/security/cve/CVE-2026-90086", "summary": "CVE-2026-90086 is fixed in 20 products on 1 platform, first by DEBIAN-CVE-2026-90086, released September 23, 2026. It is not reported as exploited. Patch Radar priority: High.", "title": "xsk: honor XDP_TX_METADATA in zero-copy path", "description": "In the Linux kernel, the following vulnerability has been resolved: xsk: honor XDP_TX_METADATA in zero-copy path The zero-copy path reads TX metadata whenever the UMEM has metadata space, even if the descriptor does not set XDP_TX_METADATA. Pass descriptor options through the metadata helpers and ignore metadata unless the option is set. This does not fix the existing per-WQE metadata handling for mlx5 MPWQEs. Only the descriptor that starts a session passes through xsk_tx_metadata_request() and configures offload state shared by the batch. Metadata on descriptors joining an open session is therefore not validated and does not configure its requested offloads. In addition, a non-NULL metadata pointer from such a descriptor is treated as a timestamp completion request even when XDP_TXMD_FLAGS_TIMESTAMP is not set, so its metadata union can be overwritten with an unrequested timestamp. Fixing mixed metadata states within one MPWQE requires a separate change.", "published": "2026-09-17T17:16:58Z", "severity": "important", "epss": 0.00209, "epssPercentile": 0.11092, "priority": "High", "priorityTier": 3, "exploited": false, "vendorExploited": false, "disclosed": false, "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-90086", "fixes": [ { "platform": "linux", "product": "bpftool6.18", "release": "amzn 2023", "fixedVersion": "1:6.18.54-121.166.amzn2023", "fix": "ALAS2023-2026-3192", "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3192", "released": "2026-11-07T01:06:07Z" }, { "platform": "linux", "product": "bpftool6.18-debuginfo", "release": "amzn 2023", "fixedVersion": "1:6.18.54-121.166.amzn2023", "fix": "ALAS2023-2026-3192", "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3192", "released": "2026-11-07T01:06:07Z" }, { "platform": "linux", "product": "kernel-livepatch-6.18.54-121.166", "release": "amzn 2023", "fixedVersion": "1:1.0-0.amzn2023", "fix": "ALAS2023-2026-3192", "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3192", "released": "2026-11-07T01:06:07Z" }, { "platform": "linux", "product": "kernel6.18", "release": "amzn 2023", "fixedVersion": "1:6.18.54-121.166.amzn2023", "fix": "ALAS2023-2026-3192", "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3192", "released": "2026-11-07T01:06:07Z" }, { "platform": "linux", "product": "kernel6.18-debuginfo", "release": "amzn 2023", "fixedVersion": "1:6.18.54-121.166.amzn2023", "fix": "ALAS2023-2026-3192", "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3192", "released": "2026-11-07T01:06:07Z" }, { "platform": "linux", "product": "kernel6.18-debuginfo-common-aarch64", "release": "amzn 2023", "fixedVersion": "1:6.18.54-121.166.amzn2023", "fix": "ALAS2023-2026-3192", "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3192", "released": "2026-11-07T01:06:07Z" }, { "platform": "linux", "product": "kernel6.18-debuginfo-common-x86_64", "release": "amzn 2023", "fixedVersion": "1:6.18.54-121.166.amzn2023", "fix": "ALAS2023-2026-3192", "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3192", "released": "2026-11-07T01:06:07Z" }, { "platform": "linux", "product": "kernel6.18-devel", "release": "amzn 2023", "fixedVersion": "1:6.18.54-121.166.amzn2023", "fix": "ALAS2023-2026-3192", "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3192", "released": "2026-11-07T01:06:07Z" }, { "platform": "linux", "product": "kernel6.18-headers", "release": "amzn 2023", "fixedVersion": "1:6.18.54-121.166.amzn2023", "fix": "ALAS2023-2026-3192", "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3192", "released": "2026-11-07T01:06:07Z" }, { "platform": "linux", "product": "kernel6.18-modules-extra", "release": "amzn 2023", "fixedVersion": "1:6.18.54-121.166.amzn2023", "fix": "ALAS2023-2026-3192", "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3192", "released": "2026-11-07T01:06:07Z" }, { "platform": "linux", "product": "kernel6.18-modules-extra-common", "release": "amzn 2023", "fixedVersion": "1:6.18.54-121.166.amzn2023", "fix": "ALAS2023-2026-3192", "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3192", "released": "2026-11-07T01:06:07Z" }, { "platform": "linux", "product": "kernel6.18-tools", "release": "amzn 2023", "fixedVersion": "1:6.18.54-121.166.amzn2023", "fix": "ALAS2023-2026-3192", "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3192", "released": "2026-11-07T01:06:07Z" }, { "platform": "linux", "product": "kernel6.18-tools-debuginfo", "release": "amzn 2023", "fixedVersion": "1:6.18.54-121.166.amzn2023", "fix": "ALAS2023-2026-3192", "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3192", "released": "2026-11-07T01:06:07Z" }, { "platform": "linux", "product": "kernel6.18-tools-devel", "release": "amzn 2023", "fixedVersion": "1:6.18.54-121.166.amzn2023", "fix": "ALAS2023-2026-3192", "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3192", "released": "2026-11-07T01:06:07Z" }, { "platform": "linux", "product": "linux", "release": "Debian 13.5 (trixie)", "fixedVersion": "6.12.115-2", "fix": "DEBIAN-CVE-2026-90086", "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-90086", "released": "2026-09-23T19:19:02Z" }, { "platform": "linux", "product": "linux", "release": "Debian 14", "fixedVersion": "7.2.6-1", "fix": "DEBIAN-CVE-2026-90086", "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-90086", "released": "2026-09-23T19:19:02Z" }, { "platform": "linux", "product": "microvm-kernel6.18", "release": "amzn 2023", "fixedVersion": "1:6.18.54-121.166.amzn2023", "fix": "ALAS2023-2026-3192", "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3192", "released": "2026-11-07T01:06:07Z" }, { "platform": "linux", "product": "perf6.18", "release": "amzn 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[], "dataAsOf": "2026-11-08T13:06:02Z", "attribution": { "text": "Data: Patchblox Patch Radar", "url": "https://patchblox.com/security/patch-radar", "terms": "https://patchblox.com/security/patch-radar/use-the-data" } }