{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "fa516b66a1bfce1d72f1620c54bdfebc493000d1"
            },
            {
              "fixed": "8df81954d22a653a8b01d46692cd56f71137269b"
            },
            {
              "fixed": "0b9f8282b40af4a99d6243d2cb939d14ff36b049"
            },
            {
              "fixed": "a36cbfb85f26e6c6fb6529b1a364331b94dc88f3"
            },
            {
              "fixed": "12ad52dc45a0c8c9d25e85b4a84201de4c5420ed"
            },
            {
              "fixed": "a0f64cf8bfcb39e533d9e27aeb763a8d81b7f39d"
            },
            {
              "fixed": "38b7d63b23aa9d2ddde7688040e9426d32be4065"
            },
            {
              "fixed": "11143a19f5b8dc8f414deab87571134f9f447313"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "4.18.0"
            },
            {
              "fixed": "5.15.212"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.178"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.145"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.97"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.40"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.1.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74399.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nevm: terminate and bound the evm_xattrs read buffer\n\nevm_read_xattrs() allocates size + 1 bytes, fills them from the list of\nenabled xattrs, and then passes strlen(temp) to\nsimple_read_from_buffer(). When no configured xattrs are enabled, the\nfill loop stores nothing and temp[0] remains uninitialized, so strlen()\nreads beyond initialized memory.\n\nExplicitly terminate the buffer after allocation, use snprintf() for\neach formatted line, and pass the accumulated length, without risk of\ntruncation, to simple_read_from_buffer().",
  "id": "CVE-2026-74399",
  "modified": "2026-08-16T03:31:18.001226048Z",
  "published": "2026-08-15T05:59:10.791Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0b9f8282b40af4a99d6243d2cb939d14ff36b049"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/11143a19f5b8dc8f414deab87571134f9f447313"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/12ad52dc45a0c8c9d25e85b4a84201de4c5420ed"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/38b7d63b23aa9d2ddde7688040e9426d32be4065"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8df81954d22a653a8b01d46692cd56f71137269b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a0f64cf8bfcb39e533d9e27aeb763a8d81b7f39d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a36cbfb85f26e6c6fb6529b1a364331b94dc88f3"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74399.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-74399"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "evm: terminate and bound the evm_xattrs read buffer"
}