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"state": "PUBLISHED",
"assignerShortName": "Linux",
"dateReserved": "2024-05-03T14:55:07.143Z",
"datePublished": "2024-05-03T14:59:10.472Z",
"dateUpdated": "2026-08-05T08:51:45.116Z"
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnvme-tcp: fix UAF when detecting digest errors\n\nWe should also bail from the io_work loop when we set rd_enabled to true,\nso we don't attempt to read data from the socket when the TCP stream is\nalready out-of-sync or corrupted."
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"value": "AV:N - The bug is in the NVMe/TCP host receive path (nvme_tcp_recv_skb → io_work), which processes PDU bytes from a remote TCP peer; a malicious or compromised NVMe-oF target (or MITM) triggers it over the network.\nAC:L - The attacker fully controls the peer TCP stream and can reliably send header-digest or other protocol errors, then more data so try_recv still returns pending work and io_work continues after rd_enabled is cleared.\nPR:N - The attacker is the remote NVMe/TCP peer and needs no privileges on the victim host; an already-configured fabrics connection is only a deployment precondition.\nUI:N - After an NVMe/TCP session exists, the peer can trigger the flaw during ordinary I/O with no further user action.\nS:U - Impact is use-after-free and memory corruption inside the host kernel’s own authority, not a cross-boundary escape.\nC:H - Continuing on a desynced stream and racing teardown yields a use-after-free (e.g. nvme_cid_to_rq on stale/freed requests), which can be leveraged for arbitrary kernel reads.\nI:H - The same UAF is exploitable for heap manipulation and arbitrary writes / control-flow hijacking in the kernel.\nA:H - The UAF causes kernel oops/panic and also forces controller error recovery that disrupts storage I/O."
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"id": "CVE-2022-48686",
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