CVE-2025-38079 (GCVE-0-2025-38079)

Vulnerability from cvelistv5 – Published: 2025-06-18 09:33 – Updated: 2026-10-15 01:06
VLAI
Title
crypto: algif_hash - fix double free in hash_accept
Summary
In the Linux kernel, the following vulnerability has been resolved: crypto: algif_hash - fix double free in hash_accept If accept(2) is called on socket type algif_hash with MSG_MORE flag set and crypto_ahash_import fails, sk2 is freed. However, it is also freed in af_alg_release, leading to slab-use-after-free error.
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-10 20:41 UTC
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 7056 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: fe869cdb89c95d060c77eea20204d6c91f233b53 , < 5bff312b59b3f2a54ff504e4f4e47272b64f3633 (git)
Affected: fe869cdb89c95d060c77eea20204d6c91f233b53 , < bf7bba75b91539e93615f560893a599c1e1c98bf (git)
Affected: fe869cdb89c95d060c77eea20204d6c91f233b53 , < c3059d58f79fdfb2201249c2741514e34562b547 (git)
Affected: fe869cdb89c95d060c77eea20204d6c91f233b53 , < f0f3d09f53534ea385d55ced408f2b67059b16e4 (git)
Affected: fe869cdb89c95d060c77eea20204d6c91f233b53 , < 134daaba93193df9e988524b5cd2f52d15eb1993 (git)
Affected: fe869cdb89c95d060c77eea20204d6c91f233b53 , < 2f45a8d64fb4ed4830a4b3273834ecd6ca504896 (git)
Affected: fe869cdb89c95d060c77eea20204d6c91f233b53 , < 0346f4b742345d1c733c977f3a7aef5a6419a967 (git)
Affected: fe869cdb89c95d060c77eea20204d6c91f233b53 , < b2df03ed4052e97126267e8c13ad4204ea6ba9b6 (git)
guessed Create a notification for this product.
Linux Linux Affected: 2.6.38
Unaffected: 0 , < 2.6.38 (semver)
Unaffected: 5.4.294 , ≤ 5.4.* (semver)
Unaffected: 5.10.238 , ≤ 5.10.* (semver)
Unaffected: 5.15.185 , ≤ 5.15.* (semver)
Unaffected: 6.1.141 , ≤ 6.1.* (semver)
Unaffected: 6.6.93 , ≤ 6.6.* (semver)
Unaffected: 6.12.31 , ≤ 6.12.* (semver)
Unaffected: 6.14.9 , ≤ 6.14.* (semver)
Unaffected: 6.15 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP Affected: V3.1.5 , < * (custom)
guessed Create a notification for this product.
Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP Affected: V3.1.5 , < * (custom)
guessed Create a notification for this product.
Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP Affected: V3.1.5 , < * (custom)
guessed Create a notification for this product.
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              "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: algif_hash - fix double free in hash_accept\n\nIf accept(2) is called on socket type algif_hash with\nMSG_MORE flag set and crypto_ahash_import fails,\nsk2 is freed. However, it is also freed in af_alg_release,\nleading to slab-use-after-free error."
            }
          ],
          "metrics": [
            {
              "cvssV3_1": {
                "baseScore": 7.8,
                "baseSeverity": "HIGH",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                "version": "3.1"
              }
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-07-30T05:51:04.911Z",
            "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "shortName": "Linux"
          },
          "references": [
            {
              "url": "https://git.kernel.org/stable/c/5bff312b59b3f2a54ff504e4f4e47272b64f3633"
            },
            {
              "url": "https://git.kernel.org/stable/c/bf7bba75b91539e93615f560893a599c1e1c98bf"
            },
            {
              "url": "https://git.kernel.org/stable/c/c3059d58f79fdfb2201249c2741514e34562b547"
            },
            {
              "url": "https://git.kernel.org/stable/c/f0f3d09f53534ea385d55ced408f2b67059b16e4"
            },
            {
              "url": "https://git.kernel.org/stable/c/134daaba93193df9e988524b5cd2f52d15eb1993"
            },
            {
              "url": "https://git.kernel.org/stable/c/2f45a8d64fb4ed4830a4b3273834ecd6ca504896"
            },
            {
              "url": "https://git.kernel.org/stable/c/0346f4b742345d1c733c977f3a7aef5a6419a967"
            },
            {
              "url": "https://git.kernel.org/stable/c/b2df03ed4052e97126267e8c13ad4204ea6ba9b6"
            }
          ],
          "title": "crypto: algif_hash - fix double free in hash_accept",
          "x_generator": {
            "engine": "bippy-1.2.0"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "assignerShortName": "Linux",
        "cveId": "CVE-2025-38079",
        "datePublished": "2025-06-18T09:33:53.251Z",
        "dateReserved": "2025-04-16T04:51:23.980Z",
        "dateUpdated": "2026-07-30T05:51:04.911Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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