{ "cveId": "CVE-2025-40159", "url": "https://patchblox.com/security/cve/CVE-2025-40159", "summary": "CVE-2025-40159 is fixed in 63 products on 1 platform, first by DEBIAN-CVE-2025-40159, released November 12, 2025. It is not reported as exploited. Patch Radar priority: High.", "title": "linux: In the Linux kernel, the following vulnerability has been resolved: xsk: Harden userspace-supplied xdp_desc validati...", "description": "In the Linux kernel, the following vulnerability has been resolved: xsk: Harden userspace-supplied xdp_desc validation Turned out certain clearly invalid values passed in xdp_desc from userspace can pass xp_{,un}aligned_validate_desc() and then lead to UBs or just invalid frames to be queued for xmit. desc-\u003Elen close to \u0060\u0060U32_MAX\u0060\u0060 with a non-zero pool-\u003Etx_metadata_len can cause positive integer overflow and wraparound, the same way low enough desc-\u003Eaddr with a non-zero pool-\u003Etx_metadata_len can cause negative integer overflow. Both scenarios can then pass the validation successfully. This doesn\u0027t happen with valid XSk applications, but can be used to perform attacks. Always promote desc-\u003Elen to \u0060\u0060u64\u0060\u0060 first to exclude positive overflows of it. Use explicit check_{add,sub}_overflow() when validating desc-\u003Eaddr (which is \u0060\u0060u64\u0060\u0060 already). bloat-o-meter reports a little growth of the code size: add/remove: 0/0 grow/shrink: 2/1 up/down: 60/-16 (44) Function old new delta xskq_cons_peek_desc 299 330 \u002B31 xsk_tx_peek_release_desc_batch 973 1002 \u002B29 xsk_generic_xmit 3148 3132 -16 but hopefully this doesn\u0027t hurt the performance much.", "published": "2025-11-12T11:15:46Z", "severity": "high", "cvss": 7.8, "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "epss": 0.00152, "epssPercentile": 0.04396, "priority": "High", "priorityTier": 3, "exploited": false, "vendorExploited": false, "disclosed": false, "fixes": [ { "platform": "linux", "product": "bpftool6.12", "release": "amzn 2023", "fixedVersion": "1:6.12.55-74.119.amzn2023", "fix": "ALAS2023-2025-1316", "url": "https://patchblox.com/security/fix/linux/alas2023-2025-1316", "released": "2025-12-08T12:37:00Z" }, { "platform": "linux", "product": "bpftool6.12-debuginfo", "release": "amzn 2023", "fixedVersion": "1:6.12.55-74.119.amzn2023", "fix": "ALAS2023-2025-1316", "url": "https://patchblox.com/security/fix/linux/alas2023-2025-1316", "released": "2025-12-08T12:37:00Z" }, { "platform": "linux", "product": "dtb-aarch64", "release": "opensuse-leap 15.6", "fixedVersion": "6.4.0-150600.23.81.1", "fix": "SUSE-SU-2025:4422-1", "url": "https://patchblox.com/security/fix/linux/suse-su-2025-4422-1", "released": "2025-12-17T10:52:47Z" }, { "platform": "linux", "product": "dtb-aarch64", "release": "opensuse-leap 16.0", "fixedVersion": "6.12.0-160000.8.1", "fix": "OPENSUSE-SU-2025:20172-1", "url": "https://patchblox.com/security/fix/linux/opensuse-su-2025-20172-1", "released": "2025-12-19T17:38:16Z" }, { "platform": "linux", "product": "kernel-64kb", "release": "opensuse-leap 15.6", "fixedVersion": "6.4.0-150600.23.81.3", "fix": "SUSE-SU-2025:4422-1", "url": "https://patchblox.com/security/fix/linux/suse-su-2025-4422-1", "released": "2025-12-17T10:52:47Z" }, { "platform": "linux", "product": "kernel-64kb", "release": "opensuse-leap 16.0", "fixedVersion": "6.12.0-160000.8.1", "fix": "OPENSUSE-SU-2025:20172-1", "url": "https://patchblox.com/security/fix/linux/opensuse-su-2025-20172-1", "released": "2025-12-19T17:38:16Z" }, { "platform": "linux", "product": "kernel-64kb", "release": "sles 15.6", "fixedVersion": "6.4.0-150600.23.81.3", "fix": "SUSE-SU-2025:4422-1", "url": "https://patchblox.com/security/fix/linux/suse-su-2025-4422-1", "released": "2025-12-17T10:52:47Z" }, { "platform": "linux", "product": "kernel-64kb", "release": "sles 15.7", "fixedVersion": "6.4.0-150700.53.25.1", "fix": "SUSE-SU-2025:4393-1", "url": "https://patchblox.com/security/fix/linux/suse-su-2025-4393-1", "released": "2025-12-15T11:09:08Z" }, { "platform": "linux", "product": "kernel-64kb", "release": "sles 16.0", "fixedVersion": "6.12.0-160000.8.1", "fix": "SUSE-SU-2026:20015-1", "url": "https://patchblox.com/security/fix/linux/suse-su-2026-20015-1", "released": "2025-12-19T16:46:47Z" }, { "platform": "linux", "product": "kernel-azure", "release": "opensuse-leap 15.6", "fixedVersion": "6.4.0-150600.8.58.1", "fix": "SUSE-SU-2025:4505-1", "url": "https://patchblox.com/security/fix/linux/suse-su-2025-4505-1", "released": "2025-12-22T16:35:13Z" }, { "platform": "linux", "product": "kernel-azure", "release": "sles 15.6", "fixedVersion": "6.4.0-150600.8.58.1", "fix": "SUSE-SU-2025:4505-1", "url": "https://patchblox.com/security/fix/linux/suse-su-2025-4505-1", "released": "2025-12-22T16:35:13Z" }, { "platform": "linux", "product": "kernel-azure", "release": "sles 15.7", "fixedVersion": "6.4.0-150700.20.21.1", "fix": "SUSE-SU-2025:4517-1", "url": "https://patchblox.com/security/fix/linux/suse-su-2025-4517-1", "released": "2025-12-23T16:28:51Z" }, { "platform": "linux", "product": "kernel-debug", "release": "opensuse-leap 15.6", "fixedVersion": "6.4.0-150600.23.81.3", "fix": 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"release": "sles 15.7", "fixedVersion": "5-150700.2.1", "fix": "SUSE-SU-2026:1185-1", "url": "https://patchblox.com/security/fix/linux/suse-su-2026-1185-1", "released": "2026-04-03T16:41:59Z" }, { "platform": "linux", "product": "kernel-livepatch-SLE15-SP7-RT_Update_6", "release": "sles 15.7", "fixedVersion": "4-150700.2.1", "fix": "SUSE-SU-2026:1180-1", "url": "https://patchblox.com/security/fix/linux/suse-su-2026-1180-1", "released": "2026-04-03T16:41:43Z" }, { "platform": "linux", "product": "kernel-livepatch-SLE15-SP7-RT_Update_7", "release": "sles 15.7", "fixedVersion": "1-150700.1.3.1", "fix": "SUSE-SU-2025:4516-1", "url": "https://patchblox.com/security/fix/linux/suse-su-2025-4516-1", "released": "2025-12-23T16:27:39Z" }, { "platform": "linux", "product": "kernel-livepatch-SLE15-SP7_Update_0", "release": "sles 15.7", "fixedVersion": "13-150700.3.36.1", "fix": "SUSE-SU-2026:1283-1", "url": "https://patchblox.com/security/fix/linux/suse-su-2026-1283-1", "released": 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