{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "00d60fd3b93219ea854220f0fd264b86398cbc53"
            },
            {
              "fixed": "622ec2dcd59f21623f2a7ab773c80ceb7d555e3a"
            },
            {
              "fixed": "b1e247338bc71826a2d2def3e0874c34749df69a"
            },
            {
              "fixed": "0f3058d7d26f81df9b68a18ddbe164bdc3c5eff3"
            },
            {
              "fixed": "5966e4e2ba213ab7ad559166152eb4f1f170dd2c"
            },
            {
              "fixed": "5165f1cc727f1322456735df212d8e26ec237a8d"
            },
            {
              "fixed": "b11c1fa32667692a2c0566e10163758e786e430c"
            },
            {
              "fixed": "670fc6a311ed321522b7fff92cf0fc376b4f6e78"
            },
            {
              "fixed": "cb481e59ea6cae3b7796ac1d7a22b6b24c3f3c0b"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "4.20.0"
            },
            {
              "fixed": "5.10.260"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.211"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.177"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.144"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.95"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.38"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.1.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/63xxx/CVE-2026-63824.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nKEYS: fix overflow in keyctl_pkey_params_get_2()\n\nThe length for the internal output buffer is calculated incorrectly, which\ncan result overflow when a too small buffer is provided.\n\nFix the bug by allocating internal output with the size of the maximum\nlength of the cryptographic primitive instead of caller provided size.",
  "id": "CVE-2026-63824",
  "modified": "2026-07-22T05:30:00.550430870Z",
  "published": "2026-07-19T12:02:20.406Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0f3058d7d26f81df9b68a18ddbe164bdc3c5eff3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5165f1cc727f1322456735df212d8e26ec237a8d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5966e4e2ba213ab7ad559166152eb4f1f170dd2c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/622ec2dcd59f21623f2a7ab773c80ceb7d555e3a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/670fc6a311ed321522b7fff92cf0fc376b4f6e78"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b11c1fa32667692a2c0566e10163758e786e430c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b1e247338bc71826a2d2def3e0874c34749df69a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/cb481e59ea6cae3b7796ac1d7a22b6b24c3f3c0b"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/63xxx/CVE-2026-63824.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-63824"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.8.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "KEYS: fix overflow in keyctl_pkey_params_get_2()"
}