CVE-2025-39964 (GCVE-0-2025-39964)
Vulnerability from cvelistv5
Published
2025-10-13 13:48
Modified
2025-10-13 13:48
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: crypto: af_alg - Disallow concurrent writes in af_alg_sendmsg Issuing two writes to the same af_alg socket is bogus as the data will be interleaved in an unpredictable fashion. Furthermore, concurrent writes may create inconsistencies in the internal socket state. Disallow this by adding a new ctx->write field that indiciates exclusive ownership for writing.
References
Impacted products
Vendor Product Version
Linux Linux Version: 8ff590903d5fc7f5a0a988c38267a3d08e6393a2
Version: 8ff590903d5fc7f5a0a988c38267a3d08e6393a2
Version: 8ff590903d5fc7f5a0a988c38267a3d08e6393a2
Version: 8ff590903d5fc7f5a0a988c38267a3d08e6393a2
Version: 8ff590903d5fc7f5a0a988c38267a3d08e6393a2
Version: 8ff590903d5fc7f5a0a988c38267a3d08e6393a2
Version: 8ff590903d5fc7f5a0a988c38267a3d08e6393a2
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      "providerMetadata": {
        "dateUpdated": "2025-10-13T13:48:30.334Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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    "dateReserved": "2025-04-16T07:20:57.149Z",
    "dateUpdated": "2025-10-13T13:48:30.334Z",
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  }
}


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