{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "2ac061ce97f413bfbbdd768f7d2e0fda2e8170df"
            },
            {
              "fixed": "87fd475dc4e354088f6534285388e7b061f54b35"
            },
            {
              "fixed": "c5f54af611ff6fe1d53fa05d8e87b469dc56122b"
            },
            {
              "fixed": "e7ba61734d6ad6adfd5bf617052e590743211669"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "5.5.0"
            },
            {
              "fixed": "6.12.117"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.63"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.3.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/99xxx/CVE-2026-99287.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nxen-netback: Zero out sring pointers on unmap\n\nIf xenvif_map_frontend_data_rings() fails when a ring is already mapped,\nit unmaps them via xenvif_unmap_frontend_data_rings() which keeps the\nring pointers unchanged. xenvif_connect_data()'s cleanup path calls\nxenvif_disconnect_queue() which in turn calls\nxenvif_unmap_frontend_data_rings() again, which will attempt to unmap the\npointers a second time.\n\nZero out the ring pointers after they are unmapped to avoid this issue.\n\nThis is XSA-532",
  "id": "CVE-2026-99287",
  "modified": "2026-11-12T02:30:54.172553307Z",
  "published": "2026-11-10T18:16:54.253Z",
  "references": [
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2026/11/10/26"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/87fd475dc4e354088f6534285388e7b061f54b35"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c5f54af611ff6fe1d53fa05d8e87b469dc56122b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e7ba61734d6ad6adfd5bf617052e590743211669"
    },
    {
      "type": "ADVISORY",
      "url": "http://xenbits.xen.org/xsa/advisory-532.html"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/99xxx/CVE-2026-99287.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-99287"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.2",
  "summary": "xen-netback: Zero out sring pointers on unmap"
}