CVE-2025-40176 (GCVE-0-2025-40176)
Vulnerability from cvelistv5
Published
2025-11-12 10:53
Modified
2025-11-12 10:53
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: tls: wait for pending async decryptions if tls_strp_msg_hold fails Async decryption calls tls_strp_msg_hold to create a clone of the input skb to hold references to the memory it uses. If we fail to allocate that clone, proceeding with async decryption can lead to various issues (UAF on the skb, writing into userspace memory after the recv() call has returned). In this case, wait for all pending decryption requests.
References
Impacted products
Vendor Product Version
Linux Linux Version: 84c61fe1a75b4255df1e1e7c054c9e6d048da417
Version: 84c61fe1a75b4255df1e1e7c054c9e6d048da417
Version: 84c61fe1a75b4255df1e1e7c054c9e6d048da417
Version: 84c61fe1a75b4255df1e1e7c054c9e6d048da417
Version: 84c61fe1a75b4255df1e1e7c054c9e6d048da417
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{
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          "product": "Linux",
          "programFiles": [
            "net/tls/tls_sw.c"
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              "status": "unaffected",
              "version": "0",
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              "status": "unaffected",
              "version": "6.18-rc2",
              "versionType": "original_commit_for_fix"
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      ],
      "cpeApplicability": [
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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\ntls: wait for pending async decryptions if tls_strp_msg_hold fails\n\nAsync decryption calls tls_strp_msg_hold to create a clone of the\ninput skb to hold references to the memory it uses. If we fail to\nallocate that clone, proceeding with async decryption can lead to\nvarious issues (UAF on the skb, writing into userspace memory after\nthe recv() call has returned).\n\nIn this case, wait for all pending decryption requests."
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        "dateUpdated": "2025-11-12T10:53:50.443Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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        {
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      ],
      "title": "tls: wait for pending async decryptions if tls_strp_msg_hold fails",
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    "assignerShortName": "Linux",
    "cveId": "CVE-2025-40176",
    "datePublished": "2025-11-12T10:53:50.443Z",
    "dateReserved": "2025-04-16T07:20:57.177Z",
    "dateUpdated": "2025-11-12T10:53:50.443Z",
    "state": "PUBLISHED"
  },
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  "vulnerability-lookup:meta": {
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  }
}


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