{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "778c1144771f0064b6f51bee865cceb0d996f2f9"
            },
            {
              "fixed": "6253dfee5afba536bb54fc6fe6c091c3758fafe1"
            },
            {
              "fixed": "65bf0d2b6e914f1448d6a2fde193dcf60936a651"
            },
            {
              "fixed": "de497d7aa2fae453a7e7c8f7d3e8682e565e3aaf"
            },
            {
              "fixed": "138c692d2b2d63d26f2eb957d0e4fcc5d61f9ff2"
            },
            {
              "fixed": "83b17872e3166c295c599279fc9562ac3840c638"
            },
            {
              "fixed": "497c6bae5167428596575f20af6613ff5671f383"
            },
            {
              "fixed": "dfd1894cb64cbd8758b461ed713800fe73db4f82"
            },
            {
              "fixed": "6255da28d4bb5349fe18e84cb043ccd394eba75d"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.6.18"
            },
            {
              "fixed": "5.10.261"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "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": "7.1.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64375.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nproc: protect ptrace_may_access() with exec_update_lock (FD links)\n\nproc_pid_get_link() and proc_pid_readlink() currently look up the task from\nthe pid once, then do the ptrace access check on that task, then look up\nthe task from the pid a second time to do the actual access.\nThat's racy in several ways.\n\nTo fix it, pass the task to the -\u003eproc_get_link() handler, and instead of\nproc_fd_access_allowed(), introduce a new helper call_proc_get_link() that\nlooks up and locks the task, does the access check, and calls\n-\u003eproc_get_link().",
  "id": "CVE-2026-64375",
  "modified": "2026-07-28T03:55:48.679390975Z",
  "published": "2026-07-25T08:50:26.869Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/138c692d2b2d63d26f2eb957d0e4fcc5d61f9ff2"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/497c6bae5167428596575f20af6613ff5671f383"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6253dfee5afba536bb54fc6fe6c091c3758fafe1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6255da28d4bb5349fe18e84cb043ccd394eba75d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/65bf0d2b6e914f1448d6a2fde193dcf60936a651"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/83b17872e3166c295c599279fc9562ac3840c638"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/de497d7aa2fae453a7e7c8f7d3e8682e565e3aaf"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/dfd1894cb64cbd8758b461ed713800fe73db4f82"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64375.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-64375"
    },
    {
      "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": "proc: protect ptrace_may_access() with exec_update_lock (FD links)"
}