CVE-2026-52989 (GCVE-0-2026-52989)
Vulnerability from cvelistv5
Published
2026-06-24 16:29
Modified
2026-08-24 12:07
Severity ?
9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: nvmet-tcp: propagate nvmet_tcp_build_pdu_iovec() errors to its callers Currently, when nvmet_tcp_build_pdu_iovec() detects an out-of-bounds PDU length or offset, it triggers nvmet_tcp_fatal_error(cmd->queue) and returns early. However, because the function returns void, the callers are entirely unaware that a fatal error has occurred and that the cmd->recv_msg.msg_iter was left uninitialized. Callers such as nvmet_tcp_handle_h2c_data_pdu() proceed to blindly overwrite the queue state with queue->rcv_state = NVMET_TCP_RECV_DATA Consequently, the socket receiving loop may attempt to read incoming network data into the uninitialized iterator. Fix this by shifting the error handling responsibility to the callers.
References
Impacted products
Vendor Product Version
Linux Linux Version: 1385be357e8acd09b36e026567f3a9d5c61139de
Version: dca1a6ba0da9f472ef040525fab10fd9956db59f
Version: 19672ae68d52ff75347ebe2420dde1b07adca09f
Version: ab200d71553bdcf4de554a5985b05b2dd606bc57
Version: 52a0a98549344ca20ad81a4176d68d28e3c05a5c
Version: 52a0a98549344ca20ad81a4176d68d28e3c05a5c
Version: 043b4307a99f902697349128fde93b2ddde4686c
Version: 42afe8ed8ad2de9c19457156244ef3e1eca94b5d
Version: 6.1.163   ≤
Version: 6.6.124   ≤
Version: 6.12.70   ≤
Version: 6.18.10   ≤
Version: 5.10.250   ≤
Version: 5.15.200   ≤
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnvmet-tcp: propagate nvmet_tcp_build_pdu_iovec() errors to its callers\n\nCurrently, when nvmet_tcp_build_pdu_iovec() detects an out-of-bounds\nPDU length or offset, it triggers nvmet_tcp_fatal_error(cmd-\u003equeue)\nand returns early. However, because the function returns void, the\ncallers are entirely unaware that a fatal error has occurred and\nthat the cmd-\u003erecv_msg.msg_iter was left uninitialized.\n\nCallers such as nvmet_tcp_handle_h2c_data_pdu() proceed to blindly\noverwrite the queue state with queue-\u003ercv_state = NVMET_TCP_RECV_DATA\nConsequently, the socket receiving loop may attempt to read incoming\nnetwork data into the uninitialized iterator.\n\nFix this by shifting the error handling responsibility to the callers."
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        "dateUpdated": "2026-08-05T12:32:25.683Z",
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}


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  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
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