CVE-2026-23344 (GCVE-0-2026-23344)

Vulnerability from cvelistv5 – Published: 2026-03-25 10:27 – Updated: 2026-03-25 10:27
VLAI?
Title
crypto: ccp - Fix use-after-free on error path
Summary
In the Linux kernel, the following vulnerability has been resolved: crypto: ccp - Fix use-after-free on error path In the error path of sev_tsm_init_locked(), the code dereferences 't' after it has been freed with kfree(). The pr_err() statement attempts to access t->tio_en and t->tio_init_done after the memory has been released. Move the pr_err() call before kfree(t) to access the fields while the memory is still valid. This issue reported by Smatch static analyser
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 4be423572da1f4c11f45168e3fafda870ddac9f8 , < 79a26fe3175b9ed7c0c9541b197cb9786237c0f7 (git)
Affected: 4be423572da1f4c11f45168e3fafda870ddac9f8 , < 889b0e2721e793eb46cf7d17b965aa3252af3ec8 (git)
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    Linux Linux Affected: 6.19
Unaffected: 0 , < 6.19 (semver)
Unaffected: 6.19.7 , ≤ 6.19.* (semver)
Unaffected: 7.0-rc3 , ≤ * (original_commit_for_fix)
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{
  "containers": {
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      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/crypto/ccp/sev-dev-tsm.c"
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          "vendor": "Linux",
          "versions": [
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              "versionType": "git"
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              "version": "0",
              "versionType": "semver"
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              "status": "unaffected",
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              "versionType": "semver"
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              "lessThanOrEqual": "*",
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              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
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          "nodes": [
            {
              "cpeMatch": [
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                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.19.7",
                  "versionStartIncluding": "6.19",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.0-rc3",
                  "versionStartIncluding": "6.19",
                  "vulnerable": true
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              "operator": "OR"
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: ccp - Fix use-after-free on error path\n\nIn the error path of sev_tsm_init_locked(), the code dereferences \u0027t\u0027\nafter it has been freed with kfree(). The pr_err() statement attempts\nto access t-\u003etio_en and t-\u003etio_init_done after the memory has been\nreleased.\n\nMove the pr_err() call before kfree(t) to access the fields while the\nmemory is still valid.\n\nThis issue reported by Smatch static analyser"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-03-25T10:27:31.795Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/79a26fe3175b9ed7c0c9541b197cb9786237c0f7"
        },
        {
          "url": "https://git.kernel.org/stable/c/889b0e2721e793eb46cf7d17b965aa3252af3ec8"
        }
      ],
      "title": "crypto: ccp - Fix use-after-free on error path",
      "x_generator": {
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    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-23344",
    "datePublished": "2026-03-25T10:27:31.795Z",
    "dateReserved": "2026-01-13T15:37:45.999Z",
    "dateUpdated": "2026-03-25T10:27:31.795Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-23344\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-03-25T11:16:32.493\",\"lastModified\":\"2026-03-25T15:41:33.977\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\ncrypto: ccp - Fix use-after-free on error path\\n\\nIn the error path of sev_tsm_init_locked(), the code dereferences \u0027t\u0027\\nafter it has been freed with kfree(). The pr_err() statement attempts\\nto access t-\u003etio_en and t-\u003etio_init_done after the memory has been\\nreleased.\\n\\nMove the pr_err() call before kfree(t) to access the fields while the\\nmemory is still valid.\\n\\nThis issue reported by Smatch static analyser\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/79a26fe3175b9ed7c0c9541b197cb9786237c0f7\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/889b0e2721e793eb46cf7d17b965aa3252af3ec8\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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