CVE-2026-98323

In the Linux kernel, the following vulnerability has been resolved:

RDMA/siw: Bound fragmented header copies by the remaining length

siw_get_hdr() can receive an extended DDP/RDMAP header across more than

one TCP callback. The first callback may receive most of the header,

while the next one still limits the copy to hdrlen - MIN_DDP_HDR instead

of the number of missing bytes. This makes the destination move past the

end of the header and overwrite the receive state, including

fpdu_part_rcvd. A later callback can then use a negative fpdu_part_rcvd

value as a copy offset, which creates an OOB write.

Use the number of header bytes already received when calculating the

next copy length.