Vulnerability-Lookup

GHSA-6J4X-6364-Q9P3

Vulnerability from github – Published: 2026-05-27 15:33 – Updated: 2026-05-27 15:33

Details

In the Linux kernel, the following vulnerability has been resolved:

crypto: ccp - Fix a crash due to incorrect cleanup usage of kfree

Annotating a local pointer variable, which will be assigned with the kmalloc-family functions, with the __cleanup(kfree) attribute will make the address of the local variable, rather than the address returned by kmalloc, passed to kfree directly and lead to a crash due to invalid deallocation of stack address. According to other places in the repo, the correct usage should be __free(kfree). The code coincidentally compiled because the parameter type void * of kfree is compatible with the desired type struct { ... } **.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-45959"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-05-27T14:17:12Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: ccp - Fix a crash due to incorrect cleanup usage of kfree\n\nAnnotating a local pointer variable, which will be assigned with the\nkmalloc-family functions, with the `__cleanup(kfree)` attribute will\nmake the address of the local variable, rather than the address returned\nby kmalloc, passed to kfree directly and lead to a crash due to invalid\ndeallocation of stack address. According to other places in the repo,\nthe correct usage should be `__free(kfree)`. The code coincidentally\ncompiled because the parameter type `void *` of kfree is compatible with\nthe desired type `struct { ... } **`.",
  "id": "GHSA-6j4x-6364-q9p3",
  "modified": "2026-05-27T15:33:18Z",
  "published": "2026-05-27T15:33:18Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-45959"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/90f9090e3e744a8fe3bb6fa0e61f577347728b0b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9a3ace9b010ffd8c422c97844ae152f7c53d6b18"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d5abcc33ee76bc26d58b39dc1a097e43a99dd438"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-45959 (GCVE-0-2026-45959)

Vulnerability from cvelistv5 – Published: 2026-05-27 12:18 – Updated: 2026-05-27 12:18

Title

crypto: ccp - Fix a crash due to incorrect cleanup usage of kfree

Summary

In the Linux kernel, the following vulnerability has been resolved: crypto: ccp - Fix a crash due to incorrect cleanup usage of kfree Annotating a local pointer variable, which will be assigned with the kmalloc-family functions, with the `__cleanup(kfree)` attribute will make the address of the local variable, rather than the address returned by kmalloc, passed to kfree directly and lead to a crash due to invalid deallocation of stack address. According to other places in the repo, the correct usage should be `__free(kfree)`. The code coincidentally compiled because the parameter type `void *` of kfree is compatible with the desired type `struct { ... } **`.

Severity

No CVSS data available.

Assigner

Linux

References

3 references

URL	Tags
https://git.kernel.org/stable/c/9a3ace9b010ffd8c4…
https://git.kernel.org/stable/c/90f9090e3e744a8fe…
https://git.kernel.org/stable/c/d5abcc33ee76bc26d…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: a71475582ada92ba021852bf3c2b40ab3718549b , < 9a3ace9b010ffd8c422c97844ae152f7c53d6b18 (git) Affected: a71475582ada92ba021852bf3c2b40ab3718549b , < 90f9090e3e744a8fe3bb6fa0e61f577347728b0b (git) Affected: a71475582ada92ba021852bf3c2b40ab3718549b , < d5abcc33ee76bc26d58b39dc1a097e43a99dd438 (git)
Linux	Linux	Affected: 6.17 Unaffected: 0 , < 6.17 (semver) Unaffected: 6.18.14 , ≤ 6.18.* (semver) Unaffected: 6.19.4 , ≤ 6.19.* (semver) Unaffected: 7.0 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/crypto/ccp/ccp-ops.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "9a3ace9b010ffd8c422c97844ae152f7c53d6b18",
              "status": "affected",
              "version": "a71475582ada92ba021852bf3c2b40ab3718549b",
              "versionType": "git"
            },
            {
              "lessThan": "90f9090e3e744a8fe3bb6fa0e61f577347728b0b",
              "status": "affected",
              "version": "a71475582ada92ba021852bf3c2b40ab3718549b",
              "versionType": "git"
            },
            {
              "lessThan": "d5abcc33ee76bc26d58b39dc1a097e43a99dd438",
              "status": "affected",
              "version": "a71475582ada92ba021852bf3c2b40ab3718549b",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/crypto/ccp/ccp-ops.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.17"
            },
            {
              "lessThan": "6.17",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.14",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.19.*",
              "status": "unaffected",
              "version": "6.19.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.0",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.14",
                  "versionStartIncluding": "6.17",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.19.4",
                  "versionStartIncluding": "6.17",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.0",
                  "versionStartIncluding": "6.17",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: ccp - Fix a crash due to incorrect cleanup usage of kfree\n\nAnnotating a local pointer variable, which will be assigned with the\nkmalloc-family functions, with the `__cleanup(kfree)` attribute will\nmake the address of the local variable, rather than the address returned\nby kmalloc, passed to kfree directly and lead to a crash due to invalid\ndeallocation of stack address. According to other places in the repo,\nthe correct usage should be `__free(kfree)`. The code coincidentally\ncompiled because the parameter type `void *` of kfree is compatible with\nthe desired type `struct { ... } **`."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-27T12:18:16.039Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/9a3ace9b010ffd8c422c97844ae152f7c53d6b18"
        },
        {
          "url": "https://git.kernel.org/stable/c/90f9090e3e744a8fe3bb6fa0e61f577347728b0b"
        },
        {
          "url": "https://git.kernel.org/stable/c/d5abcc33ee76bc26d58b39dc1a097e43a99dd438"
        }
      ],
      "title": "crypto: ccp - Fix a crash due to incorrect cleanup usage of kfree",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-45959",
    "datePublished": "2026-05-27T12:18:16.039Z",
    "dateReserved": "2026-05-13T15:03:33.089Z",
    "dateUpdated": "2026-05-27T12:18:16.039Z",
    "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.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-6J4X-6364-Q9P3

CVE-2026-45959 (GCVE-0-2026-45959)

Tags

Sightings

Nomenclature