FKIE_CVE-2026-64371

Vulnerability from fkie_nvd - Published: 2026-07-25 10:17 - Updated: 2026-07-25 10:17
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved: proc: protect ptrace_may_access() with exec_update_lock (part 1) Fix the easy cases where procfs currently calls ptrace_may_access() without exec_update_lock protection, where the fix is to simply add the extra lock or use mm_access(): - do_task_stat(): grab exec_update_lock - proc_pid_wchan(): grab exec_update_lock - proc_map_files_lookup(): use mm_access() instead of get_task_mm() - proc_map_files_readdir(): use mm_access() instead of get_task_mm() - proc_ns_get_link(): grab exec_update_lock - proc_ns_readlink(): grab exec_update_lock
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/4bfe8c481846cee52473a2f7d7b30ee8e6749fc4
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6650527444dadc63d84aa939d14ecba4fadb2f69
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/7456ae990a9738962b33146916fabca62ae3d4e0
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ae1e630bcaac739f625822078edbaea98366930d
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/bb43679356f1f2a4c6b1c88aec4f021e5b5c74e9
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c1cfd63326f5d09999134e9052c353faf738286e
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d54f14655fd7d7b293698a8b6918563c4c0465e7
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f9b4b03ccc9c69bf7f7298d4559906ebea7143b3
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/proc/array.c",
            "fs/proc/base.c",
            "fs/proc/namespaces.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "ae1e630bcaac739f625822078edbaea98366930d",
              "status": "affected",
              "version": "f83ce3e6b02d5e48b3a43b001390e2b58820389d",
              "versionType": "git"
            },
            {
              "lessThan": "d54f14655fd7d7b293698a8b6918563c4c0465e7",
              "status": "affected",
              "version": "f83ce3e6b02d5e48b3a43b001390e2b58820389d",
              "versionType": "git"
            },
            {
              "lessThan": "bb43679356f1f2a4c6b1c88aec4f021e5b5c74e9",
              "status": "affected",
              "version": "f83ce3e6b02d5e48b3a43b001390e2b58820389d",
              "versionType": "git"
            },
            {
              "lessThan": "7456ae990a9738962b33146916fabca62ae3d4e0",
              "status": "affected",
              "version": "f83ce3e6b02d5e48b3a43b001390e2b58820389d",
              "versionType": "git"
            },
            {
              "lessThan": "4bfe8c481846cee52473a2f7d7b30ee8e6749fc4",
              "status": "affected",
              "version": "f83ce3e6b02d5e48b3a43b001390e2b58820389d",
              "versionType": "git"
            },
            {
              "lessThan": "f9b4b03ccc9c69bf7f7298d4559906ebea7143b3",
              "status": "affected",
              "version": "f83ce3e6b02d5e48b3a43b001390e2b58820389d",
              "versionType": "git"
            },
            {
              "lessThan": "c1cfd63326f5d09999134e9052c353faf738286e",
              "status": "affected",
              "version": "f83ce3e6b02d5e48b3a43b001390e2b58820389d",
              "versionType": "git"
            },
            {
              "lessThan": "6650527444dadc63d84aa939d14ecba4fadb2f69",
              "status": "affected",
              "version": "f83ce3e6b02d5e48b3a43b001390e2b58820389d",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "6b06d6282100dd5aacf7d45443d651a1995bd9c4",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "334ed22054b2ec8477e4409e214fc139cf937ef6",
              "versionType": "git"
            },
            {
              "lessThan": "2.6.28",
              "status": "affected",
              "version": "2.6.27.23",
              "versionType": "semver"
            },
            {
              "lessThan": "2.6.30",
              "status": "affected",
              "version": "2.6.29.3",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "fs/proc/array.c",
            "fs/proc/base.c",
            "fs/proc/namespaces.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "2.6.30"
            },
            {
              "lessThan": "2.6.30",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.261",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.212",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.178",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.145",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.97",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.40",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.1.*",
              "status": "unaffected",
              "version": "7.1.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.2-rc1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nproc: protect ptrace_may_access() with exec_update_lock (part 1)\n\nFix the easy cases where procfs currently calls ptrace_may_access() without\nexec_update_lock protection, where the fix is to simply add the extra lock\nor use mm_access():\n\n - do_task_stat(): grab exec_update_lock\n - proc_pid_wchan(): grab exec_update_lock\n - proc_map_files_lookup(): use mm_access() instead of get_task_mm()\n - proc_map_files_readdir(): use mm_access() instead of get_task_mm()\n - proc_ns_get_link(): grab exec_update_lock\n - proc_ns_readlink(): grab exec_update_lock"
    }
  ],
  "id": "CVE-2026-64371",
  "lastModified": "2026-07-25T10:17:20.010",
  "metrics": {},
  "published": "2026-07-25T10:17:20.010",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/4bfe8c481846cee52473a2f7d7b30ee8e6749fc4"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/6650527444dadc63d84aa939d14ecba4fadb2f69"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/7456ae990a9738962b33146916fabca62ae3d4e0"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/ae1e630bcaac739f625822078edbaea98366930d"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/bb43679356f1f2a4c6b1c88aec4f021e5b5c74e9"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/c1cfd63326f5d09999134e9052c353faf738286e"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/d54f14655fd7d7b293698a8b6918563c4c0465e7"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/f9b4b03ccc9c69bf7f7298d4559906ebea7143b3"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}



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