Vulnerability-Lookup

FKIE_CVE-2026-93222

Vulnerability from fkie_nvd - Published: 2026-09-24 16:17 - Updated: 2026-09-24 16:17

Severity

Summary

In the Linux kernel, the following vulnerability has been resolved: signal: avoid shared siginfo namespace rewrites send_signal_locked() rewrites sender ids for the target namespace. Group sends reuse the same siginfo, so one recipient can affect the next. Copy the siginfo before changing it.

References

	URL	Tags
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/03c8761e75d1619906bb503686f9cc1dfc6a67f4
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/148b0dae2a1755beb873a2aab51fb191414f068c
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/4ee7c4e4719a825052f42f02ec159b5b42b68fbc
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/6b1de022304ef85284c5933a5fb8492f6f54efc9
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/a246da20c8e4ae4319511c698b9f26ad0ad1769f
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/b655c2040ce836afad5643842543567b31f8c11d
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/d19cdc167e696714509e87d3f7ae765b6e164589
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/e015d1ac6b43a23c52c5163299414ae77d7d4ae0

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "kernel/signal.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "e015d1ac6b43a23c52c5163299414ae77d7d4ae0",
              "status": "affected",
              "version": "7a0cf094944e2540758b7f957eb6846d5126f535",
              "versionType": "git"
            },
            {
              "lessThan": "4ee7c4e4719a825052f42f02ec159b5b42b68fbc",
              "status": "affected",
              "version": "7a0cf094944e2540758b7f957eb6846d5126f535",
              "versionType": "git"
            },
            {
              "lessThan": "148b0dae2a1755beb873a2aab51fb191414f068c",
              "status": "affected",
              "version": "7a0cf094944e2540758b7f957eb6846d5126f535",
              "versionType": "git"
            },
            {
              "lessThan": "6b1de022304ef85284c5933a5fb8492f6f54efc9",
              "status": "affected",
              "version": "7a0cf094944e2540758b7f957eb6846d5126f535",
              "versionType": "git"
            },
            {
              "lessThan": "03c8761e75d1619906bb503686f9cc1dfc6a67f4",
              "status": "affected",
              "version": "7a0cf094944e2540758b7f957eb6846d5126f535",
              "versionType": "git"
            },
            {
              "lessThan": "a246da20c8e4ae4319511c698b9f26ad0ad1769f",
              "status": "affected",
              "version": "7a0cf094944e2540758b7f957eb6846d5126f535",
              "versionType": "git"
            },
            {
              "lessThan": "b655c2040ce836afad5643842543567b31f8c11d",
              "status": "affected",
              "version": "7a0cf094944e2540758b7f957eb6846d5126f535",
              "versionType": "git"
            },
            {
              "lessThan": "d19cdc167e696714509e87d3f7ae765b6e164589",
              "status": "affected",
              "version": "7a0cf094944e2540758b7f957eb6846d5126f535",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "e897dd22800f02bd48aefb1511fff0b2ce96e94c",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "2f0e9eed11ca778d0ec5507a739c28472fd4ca20",
              "versionType": "git"
            },
            {
              "lessThan": "5.2",
              "status": "affected",
              "version": "5.1.20",
              "versionType": "semver"
            },
            {
              "lessThan": "5.3",
              "status": "affected",
              "version": "5.2.3",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "kernel/signal.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.3"
            },
            {
              "lessThan": "5.3",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.270",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.221",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.188",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.157",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.109",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.50",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3-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\nsignal: avoid shared siginfo namespace rewrites\n\nsend_signal_locked() rewrites sender ids for the target namespace.  Group\nsends reuse the same siginfo, so one recipient can affect the next.\n\nCopy the siginfo before changing it."
    }
  ],
  "id": "CVE-2026-93222",
  "lastModified": "2026-09-24T16:17:17.437",
  "metrics": {},
  "published": "2026-09-24T16:17:17.437",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/03c8761e75d1619906bb503686f9cc1dfc6a67f4"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/148b0dae2a1755beb873a2aab51fb191414f068c"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/4ee7c4e4719a825052f42f02ec159b5b42b68fbc"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/6b1de022304ef85284c5933a5fb8492f6f54efc9"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/a246da20c8e4ae4319511c698b9f26ad0ad1769f"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/b655c2040ce836afad5643842543567b31f8c11d"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/d19cdc167e696714509e87d3f7ae765b6e164589"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/e015d1ac6b43a23c52c5163299414ae77d7d4ae0"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}

CVE-2026-93222 (GCVE-0-2026-93222)

Vulnerability from cvelistv5 – Published: 2026-09-24 15:21 – Updated: 2026-09-24 15:21

Title

signal: avoid shared siginfo namespace rewrites

Summary

Severity

No CVSS data available.

Assigner

Linux mitre root

References

8 references

URL	Tags
https://git.kernel.org/stable/c/e015d1ac6b43a23c5…
https://git.kernel.org/stable/c/4ee7c4e4719a82505…
https://git.kernel.org/stable/c/148b0dae2a1755beb…
https://git.kernel.org/stable/c/6b1de022304ef8528…
https://git.kernel.org/stable/c/03c8761e75d161990…
https://git.kernel.org/stable/c/a246da20c8e4ae431…
https://git.kernel.org/stable/c/b655c2040ce836afa…
https://git.kernel.org/stable/c/d19cdc167e6967145…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 7a0cf094944e2540758b7f957eb6846d5126f535 , < e015d1ac6b43a23c52c5163299414ae77d7d4ae0 (git) Affected: 7a0cf094944e2540758b7f957eb6846d5126f535 , < 4ee7c4e4719a825052f42f02ec159b5b42b68fbc (git) Affected: 7a0cf094944e2540758b7f957eb6846d5126f535 , < 148b0dae2a1755beb873a2aab51fb191414f068c (git) Affected: 7a0cf094944e2540758b7f957eb6846d5126f535 , < 6b1de022304ef85284c5933a5fb8492f6f54efc9 (git) Affected: 7a0cf094944e2540758b7f957eb6846d5126f535 , < 03c8761e75d1619906bb503686f9cc1dfc6a67f4 (git) Affected: 7a0cf094944e2540758b7f957eb6846d5126f535 , < a246da20c8e4ae4319511c698b9f26ad0ad1769f (git) Affected: 7a0cf094944e2540758b7f957eb6846d5126f535 , < b655c2040ce836afad5643842543567b31f8c11d (git) Affected: 7a0cf094944e2540758b7f957eb6846d5126f535 , < d19cdc167e696714509e87d3f7ae765b6e164589 (git) Affected: e897dd22800f02bd48aefb1511fff0b2ce96e94c (git) Affected: 2f0e9eed11ca778d0ec5507a739c28472fd4ca20 (git) Affected: 5.1.20 , < 5.2 (semver) Affected: 5.2.3 , < 5.3 (semver)
Linux	Linux	Affected: 5.3 Unaffected: 0 , < 5.3 (semver) Unaffected: 5.10.270 , ≤ 5.10.* (semver) Unaffected: 5.15.221 , ≤ 5.15.* (semver) Unaffected: 6.1.188 , ≤ 6.1.* (semver) Unaffected: 6.6.157 , ≤ 6.6.* (semver) Unaffected: 6.12.109 , ≤ 6.12.* (semver) Unaffected: 6.18.50 , ≤ 6.18.* (semver) Unaffected: 7.2.4 , ≤ 7.2.* (semver) Unaffected: 7.3-rc1 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "kernel/signal.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "e015d1ac6b43a23c52c5163299414ae77d7d4ae0",
              "status": "affected",
              "version": "7a0cf094944e2540758b7f957eb6846d5126f535",
              "versionType": "git"
            },
            {
              "lessThan": "4ee7c4e4719a825052f42f02ec159b5b42b68fbc",
              "status": "affected",
              "version": "7a0cf094944e2540758b7f957eb6846d5126f535",
              "versionType": "git"
            },
            {
              "lessThan": "148b0dae2a1755beb873a2aab51fb191414f068c",
              "status": "affected",
              "version": "7a0cf094944e2540758b7f957eb6846d5126f535",
              "versionType": "git"
            },
            {
              "lessThan": "6b1de022304ef85284c5933a5fb8492f6f54efc9",
              "status": "affected",
              "version": "7a0cf094944e2540758b7f957eb6846d5126f535",
              "versionType": "git"
            },
            {
              "lessThan": "03c8761e75d1619906bb503686f9cc1dfc6a67f4",
              "status": "affected",
              "version": "7a0cf094944e2540758b7f957eb6846d5126f535",
              "versionType": "git"
            },
            {
              "lessThan": "a246da20c8e4ae4319511c698b9f26ad0ad1769f",
              "status": "affected",
              "version": "7a0cf094944e2540758b7f957eb6846d5126f535",
              "versionType": "git"
            },
            {
              "lessThan": "b655c2040ce836afad5643842543567b31f8c11d",
              "status": "affected",
              "version": "7a0cf094944e2540758b7f957eb6846d5126f535",
              "versionType": "git"
            },
            {
              "lessThan": "d19cdc167e696714509e87d3f7ae765b6e164589",
              "status": "affected",
              "version": "7a0cf094944e2540758b7f957eb6846d5126f535",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "e897dd22800f02bd48aefb1511fff0b2ce96e94c",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "2f0e9eed11ca778d0ec5507a739c28472fd4ca20",
              "versionType": "git"
            },
            {
              "lessThan": "5.2",
              "status": "affected",
              "version": "5.1.20",
              "versionType": "semver"
            },
            {
              "lessThan": "5.3",
              "status": "affected",
              "version": "5.2.3",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "kernel/signal.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.3"
            },
            {
              "lessThan": "5.3",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.270",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.221",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.188",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.157",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.109",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.50",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3-rc1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.270",
                  "versionStartIncluding": "5.3",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.221",
                  "versionStartIncluding": "5.3",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.188",
                  "versionStartIncluding": "5.3",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.157",
                  "versionStartIncluding": "5.3",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.109",
                  "versionStartIncluding": "5.3",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.50",
                  "versionStartIncluding": "5.3",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2.4",
                  "versionStartIncluding": "5.3",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.3-rc1",
                  "versionStartIncluding": "5.3",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "5.1.20",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "5.2.3",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
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        }
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsignal: avoid shared siginfo namespace rewrites\n\nsend_signal_locked() rewrites sender ids for the target namespace.  Group\nsends reuse the same siginfo, so one recipient can affect the next.\n\nCopy the siginfo before changing it."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-24T15:21:04.961Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
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          "url": "https://git.kernel.org/stable/c/4ee7c4e4719a825052f42f02ec159b5b42b68fbc"
        },
        {
          "url": "https://git.kernel.org/stable/c/148b0dae2a1755beb873a2aab51fb191414f068c"
        },
        {
          "url": "https://git.kernel.org/stable/c/6b1de022304ef85284c5933a5fb8492f6f54efc9"
        },
        {
          "url": "https://git.kernel.org/stable/c/03c8761e75d1619906bb503686f9cc1dfc6a67f4"
        },
        {
          "url": "https://git.kernel.org/stable/c/a246da20c8e4ae4319511c698b9f26ad0ad1769f"
        },
        {
          "url": "https://git.kernel.org/stable/c/b655c2040ce836afad5643842543567b31f8c11d"
        },
        {
          "url": "https://git.kernel.org/stable/c/d19cdc167e696714509e87d3f7ae765b6e164589"
        }
      ],
      "title": "signal: avoid shared siginfo namespace rewrites",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-93222",
    "datePublished": "2026-09-24T15:21:04.961Z",
    "dateReserved": "2026-09-17T16:02:15.094Z",
    "dateUpdated": "2026-09-24T15:21:04.961Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

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FKIE_CVE-2026-93222

CVE-2026-93222 (GCVE-0-2026-93222)

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Related by attack behaviour