{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "df874f9e52c340cc6f0a0014a97b778f67d46849"
            },
            {
              "fixed": "b6b533f83461c3730875cf3ed5ff6362dcb67be9"
            },
            {
              "fixed": "fb4d77553841ae85bed9b2cf03351c401e871d85"
            },
            {
              "fixed": "f2849b1fd059ec9b3281b771e6ac5aad9feee851"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.14.0"
            },
            {
              "fixed": "6.18.50"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.2.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80993.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: phylink: correctly validate returned PCS in phylink_inband_caps\n\nIn phylink_inband_caps(), the PCS returned by mac_select_pcs is only\nchecked if NULL but mac_select_pcs can also return an error pointer.\n\nThis can cause a kernel panic as phylink_pcs_inband_caps() only checks\nif passed PCS is not NULL and directly dereference ops from the phylink_pcs\nstruct.\n\nUse the IS_ERR_OR_NULL macro to address both case where the returned\nPCS can be NULL or an error pointer and prevent a kernel panic.",
  "id": "CVE-2026-80993",
  "modified": "2026-09-13T03:30:39.901771359Z",
  "published": "2026-09-11T19:42:49.521Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b6b533f83461c3730875cf3ed5ff6362dcb67be9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f2849b1fd059ec9b3281b771e6ac5aad9feee851"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/fb4d77553841ae85bed9b2cf03351c401e871d85"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80993.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-80993"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "net: phylink: correctly validate returned PCS in phylink_inband_caps"
}