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proc: protect ptrace_may_access() with exec_update_lock (part 1)

Type: advisorySource: Official CVE List1 source record

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

Announced Source revision 1
Original source ↗

CVE-2026-64371

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2026-64371

Linux

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Linux

Source reference: /containers/cna/affected/1/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "f83ce3e6b02d5e48b3a43b001390e2b58820389d",
        "lessThan": "ae1e630bcaac739f625822078edbaea98366930d",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "f83ce3e6b02d5e48b3a43b001390e2b58820389d",
        "lessThan": "d54f14655fd7d7b293698a8b6918563c4c0465e7",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "f83ce3e6b02d5e48b3a43b001390e2b58820389d",
        "lessThan": "bb43679356f1f2a4c6b1c88aec4f021e5b5c74e9",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "f83ce3e6b02d5e48b3a43b001390e2b58820389d",
        "lessThan": "7456ae990a9738962b33146916fabca62ae3d4e0",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "f83ce3e6b02d5e48b3a43b001390e2b58820389d",
        "lessThan": "4bfe8c481846cee52473a2f7d7b30ee8e6749fc4",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "f83ce3e6b02d5e48b3a43b001390e2b58820389d",
        "lessThan": "f9b4b03ccc9c69bf7f7298d4559906ebea7143b3",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "f83ce3e6b02d5e48b3a43b001390e2b58820389d",
        "lessThan": "c1cfd63326f5d09999134e9052c353faf738286e",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "f83ce3e6b02d5e48b3a43b001390e2b58820389d",
        "lessThan": "6650527444dadc63d84aa939d14ecba4fadb2f69",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "6b06d6282100dd5aacf7d45443d651a1995bd9c4",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "334ed22054b2ec8477e4409e214fc139cf937ef6",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "2.6.27.23",
        "lessThan": "2.6.28",
        "versionType": "semver"
      },
      {
        "status": "affected",
        "version": "2.6.29.3",
        "lessThan": "2.6.30",
        "versionType": "semver"
      }
    ],
    "programFiles": [
      "fs/proc/array.c",
      "fs/proc/base.c",
      "fs/proc/namespaces.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "2.6.30"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "2.6.30",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "5.10.261",
        "versionType": "semver",
        "lessThanOrEqual": "5.10.*"
      },
      {
        "status": "unaffected",
        "version": "5.15.212",
        "versionType": "semver",
        "lessThanOrEqual": "5.15.*"
      },
      {
        "status": "unaffected",
        "version": "6.1.178",
        "versionType": "semver",
        "lessThanOrEqual": "6.1.*"
      },
      {
        "status": "unaffected",
        "version": "6.6.145",
        "versionType": "semver",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.12.97",
        "versionType": "semver",
        "lessThanOrEqual": "6.12.*"
      },
      {
        "status": "unaffected",
        "version": "6.18.40",
        "versionType": "semver",
        "lessThanOrEqual": "6.18.*"
      },
      {
        "status": "unaffected",
        "version": "7.1.4",
        "versionType": "semver",
        "lessThanOrEqual": "7.1.*"
      },
      {
        "status": "unaffected",
        "version": "7.2",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "fs/proc/array.c",
      "fs/proc/base.c",
      "fs/proc/namespaces.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2026-64371

Source reference: /cveMetadata/cveId

Publisher severity

No explicit severity was provided.

Event
#28464 · Revision 1
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Publisher date
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