{
  "cveId": "CVE-2026-80693",
  "url": "https://patchblox.com/security/cve/CVE-2026-80693",
  "summary": "CVE-2026-80693 is fixed in 16 products on 1 platform, first by DEBIAN-CVE-2026-80693, released August 29, 2026. It is not reported as exploited. Patch Radar priority: Urgent.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  idpf: bound interrupt-vector register fill to th...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  idpf: bound interrupt-vector register fill to the allocated array  idpf_get_reg_intr_vecs() fills the caller-allocated reg_vals[] array from the VIRTCHNL2_OP_ALLOC_VECTORS reply in adapter-\u003Ereq_vec_chunks, bounding its inner loop only by the per-chunk num_vectors. The array is sized separately: idpf_intr_reg_init() allocates kzalloc_objs(struct idpf_vec_regs, total_vecs) from caps.num_allocated_vectors and only checks the returned count after the fill. The sum of per-chunk num_vectors is never reconciled against total_vecs, so a reply with a small num_allocated_vectors but chunks summing higher writes past the end of reg_vals[].  Impact: a control plane (a PF or hypervisor device model) that returns a VIRTCHNL2_OP_ALLOC_VECTORS reply whose per-chunk num_vectors sum exceeds num_allocated_vectors writes struct idpf_vec_regs entries past the end of the reg_vals kmalloc allocation (KASAN slab-out-of-bounds write).  Bound the fill loop to the array capacity passed in by the callers, mirroring the sibling idpf_vport_get_q_reg(). The existing num_regs \u003C num_vecs check then rejects an undersized reply without the out-of-bounds write happening first.",
  "published": "2026-08-28T08:16:54Z",
  "severity": "critical",
  "cvss": 9.3,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H",
  "epss": 0.00142,
  "epssPercentile": 0.03573,
  "priority": "Urgent",
  "priorityTier": 2,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
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      "fix": "OPENSUSE-SU-2026:21910-1",
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      "released": "2026-09-22T15:26:20Z"
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      "product": "kernel-64kb",
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      "fix": "OPENSUSE-SU-2026:21910-1",
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      "released": "2026-09-22T15:26:20Z"
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      "fix": "SUSE-SU-2026:4706-1",
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      "released": "2026-11-07T00:43:02Z"
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      "released": "2026-09-22T14:23:31Z"
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  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T00:53:09Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}