CVE-2026-64111 (GCVE-0-2026-64111)

Vulnerability from cvelistv5 – Published: 2026-07-19 15:40 – Updated: 2026-07-20 13:43
VLAI
Title
lsm: hold cred_guard_mutex for lsm_set_self_attr()
Summary
In the Linux kernel, the following vulnerability has been resolved: lsm: hold cred_guard_mutex for lsm_set_self_attr() Just as proc_pid_attr_write() already does before calling the LSM hook. This only matters for SELinux and AppArmor which check whether the process is being ptraced and if so, whether to allow the transition.
Severity
7.1 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: a04a1198088a1378d0389c250cc684f649bcc91e , < 82d3acee88593e3d9e71cad4b7d6b3cf70de9d07 (git)
Affected: a04a1198088a1378d0389c250cc684f649bcc91e , < 5b906f31e977286888a9e31282589b545b249139 (git)
Affected: a04a1198088a1378d0389c250cc684f649bcc91e , < a010cadaf5727b8417f62fe9021fcef14a5f9b51 (git)
Affected: a04a1198088a1378d0389c250cc684f649bcc91e , < 4a9b16541ad3faf8bccb398532bf3f8b6bbf1188 (git)
Create a notification for this product.
Linux Linux Affected: 6.8
Unaffected: 0 , < 6.8 (semver)
Unaffected: 6.12.92 , ≤ 6.12.* (semver)
Unaffected: 6.18.34 , ≤ 6.18.* (semver)
Unaffected: 7.0.11 , ≤ 7.0.* (semver)
Unaffected: 7.1 , ≤ * (original_commit_for_fix)
Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "security/lsm_syscalls.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "82d3acee88593e3d9e71cad4b7d6b3cf70de9d07",
              "status": "affected",
              "version": "a04a1198088a1378d0389c250cc684f649bcc91e",
              "versionType": "git"
            },
            {
              "lessThan": "5b906f31e977286888a9e31282589b545b249139",
              "status": "affected",
              "version": "a04a1198088a1378d0389c250cc684f649bcc91e",
              "versionType": "git"
            },
            {
              "lessThan": "a010cadaf5727b8417f62fe9021fcef14a5f9b51",
              "status": "affected",
              "version": "a04a1198088a1378d0389c250cc684f649bcc91e",
              "versionType": "git"
            },
            {
              "lessThan": "4a9b16541ad3faf8bccb398532bf3f8b6bbf1188",
              "status": "affected",
              "version": "a04a1198088a1378d0389c250cc684f649bcc91e",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "security/lsm_syscalls.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.8"
            },
            {
              "lessThan": "6.8",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.92",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.34",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.0.*",
              "status": "unaffected",
              "version": "7.0.11",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.92",
                  "versionStartIncluding": "6.8",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.34",
                  "versionStartIncluding": "6.8",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.0.11",
                  "versionStartIncluding": "6.8",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.1",
                  "versionStartIncluding": "6.8",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nlsm: hold cred_guard_mutex for lsm_set_self_attr()\n\nJust as proc_pid_attr_write() already does before calling the LSM\nhook. This only matters for SELinux and AppArmor which check\nwhether the process is being ptraced and if so, whether to\nallow the transition."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.1,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N",
            "version": "3.1"
          }
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-20T13:43:25.360Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/82d3acee88593e3d9e71cad4b7d6b3cf70de9d07"
        },
        {
          "url": "https://git.kernel.org/stable/c/5b906f31e977286888a9e31282589b545b249139"
        },
        {
          "url": "https://git.kernel.org/stable/c/a010cadaf5727b8417f62fe9021fcef14a5f9b51"
        },
        {
          "url": "https://git.kernel.org/stable/c/4a9b16541ad3faf8bccb398532bf3f8b6bbf1188"
        }
      ],
      "title": "lsm: hold cred_guard_mutex for lsm_set_self_attr()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-64111",
    "datePublished": "2026-07-19T15:40:13.007Z",
    "dateReserved": "2026-07-19T07:54:57.035Z",
    "dateUpdated": "2026-07-20T13:43:25.360Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-64111",
      "date": "2026-07-21",
      "epss": "0.00135",
      "percentile": "0.03363"
    },
    "microsoft_vex": {
      "current_release_date": "2026-07-21T01:04:00.000Z",
      "cve": "CVE-2026-64111",
      "id": "msrc_CVE-2026-64111",
      "initial_release_date": "2026-07-21T01:04:00.000Z",
      "product_status:known_affected": "1",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "lsm: hold cred_guard_mutex for lsm_set_self_attr()",
      "url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-64111.json",
      "version": "1"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-64111\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-07-19T16:17:52.463\",\"lastModified\":\"2026-07-20T15:17:09.810\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nlsm: hold cred_guard_mutex for lsm_set_self_attr()\\n\\nJust as proc_pid_attr_write() already does before calling the LSM\\nhook. This only matters for SELinux and AppArmor which check\\nwhether the process is being ptraced and if so, whether to\\nallow the transition.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"security/lsm_syscalls.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"a04a1198088a1378d0389c250cc684f649bcc91e\",\"lessThan\":\"82d3acee88593e3d9e71cad4b7d6b3cf70de9d07\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"a04a1198088a1378d0389c250cc684f649bcc91e\",\"lessThan\":\"5b906f31e977286888a9e31282589b545b249139\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"a04a1198088a1378d0389c250cc684f649bcc91e\",\"lessThan\":\"a010cadaf5727b8417f62fe9021fcef14a5f9b51\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"a04a1198088a1378d0389c250cc684f649bcc91e\",\"lessThan\":\"4a9b16541ad3faf8bccb398532bf3f8b6bbf1188\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"security/lsm_syscalls.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"6.8\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"6.8\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12.92\",\"lessThanOrEqual\":\"6.12.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.18.34\",\"lessThanOrEqual\":\"6.18.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.0.11\",\"lessThanOrEqual\":\"7.0.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.1\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N\",\"baseScore\":7.1,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":1.8,\"impactScore\":5.2}]},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/4a9b16541ad3faf8bccb398532bf3f8b6bbf1188\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/5b906f31e977286888a9e31282589b545b249139\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/82d3acee88593e3d9e71cad4b7d6b3cf70de9d07\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/a010cadaf5727b8417f62fe9021fcef14a5f9b51\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}",
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-07-21T05:20:43+00:00",
      "cve": "CVE-2026-64111",
      "id": "CVE-2026-64111",
      "initial_release_date": "2026-07-19T00:00:00+00:00",
      "product_status:known_affected": "184",
      "product_status:known_not_affected": "91",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: lsm: hold cred_guard_mutex for lsm_set_self_attr()",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-64111.json",
      "version": "3"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.