CVE-2026-52989

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.

• linux linux kernel (>= 5.10.250 < 5.11) • linux linux kernel (>= 5.15.200 < 5.16) • linux linux kernel (>= 6.1.163 < 6.1.175) • linux linux kernel (>= 6.6.124 < 6.6.141) • linux linux kernel (>= 6.12.70 < 6.12.91) • linux linux kernel (>= 6.18.10 < 6.18.33) • linux linux kernel (>= 6.19.1 < 7.0.10) • linux linux kernel 6.19 • linux linux kernel 7.1