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    "cveMetadata": {
        "cveId": "CVE-2026-31631",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-03-09T15:48:24.125Z",
        "datePublished": "2026-04-24T14:44:47.305Z",
        "dateUpdated": "2026-10-16T15:20:17.371Z"
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                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nrxrpc: Fix buffer overread in rxgk_do_verify_authenticator()\n\nFix rxgk_do_verify_authenticator() to check the buffer size before checking\nthe nonce."
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                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H",
                        "baseScore": 8.2,
                        "baseSeverity": "HIGH"
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                        {
                            "lang": "en",
                            "value": "AV:N - RxRPC is carried over UDP and the vulnerable server-side RXGK RESPONSE processing is reached from received network packets on an AF_RXRPC service endpoint.\nAC:L - There is no race or condition outside the attacker's control once an RXGK-capable service and enctype are in use; a crafted short decrypted authenticator deterministically reaches the missing length check.\nPR:N - The vulnerable code runs during the RXGK authentication handshake before the service connection is accepted. No local privilege on the target is required by a remote peer sending the RESPONSE packet.\nUI:N - No victim user action is required after the RxRPC service is listening; packet processing occurs in the kernel receive path.\nS:U - The impact is confined to the kernel/service host processing the RxRPC connection and does not cross a VM, IOMMU, or comparable security boundary.\nC:L - The bug is a bounded buffer overread of a few bytes past the decrypted authenticator buffer, potentially exposing adjacent kernel heap data through comparison/error behavior. It does not provide an arbitrary kernel memory read.\nI:N - The flaw is an out-of-bounds read before nonce/appdata parsing and does not write attacker-controlled data or corrupt memory.\nA:H - The out-of-bounds read can fault or trigger hardened/debug slab checks, producing a kernel oops or panic. A remote peer can repeatedly send crafted RESPONSE packets."
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                            "versionType": "original_commit_for_fix"
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                    ]
                }
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            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/794586789800b16dcbe235452494f4223ac80413"
                },
                {
                    "url": "https://git.kernel.org/stable/c/1c4422d8be81718ecb15d79aedff607323085201"
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                {
                    "url": "https://git.kernel.org/stable/c/f564af387c8c28238f8ebc13314c589d7ba8475d"
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            "title": "rxrpc: Fix buffer overread in rxgk_do_verify_authenticator()",
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