Stanislav Fomichev 849b1664db xsk: validate metadata when processing requests ... The zero-copy path validates TX metadata while obtaining the descriptor context, then reads it again later when preparing the hardware request. User space can change the metadata between those operations and bypass the original validation. Validate the metadata in xsk_tx_metadata_request() and use the resulting flags snapshot for every feature check. Read request fields once so all zero-copy drivers process only values observed after successful validation. Fixes: ca4419f15a ("xsk: Add launch time hardware offload support to XDP Tx metadata") Cc: Cen Zhang (Microsoft) <blbllhy@gmail.com> Signed-off-by: Stanislav Fomichev <sdf@fomichev.me> Link: https://patch.msgid.link/20260727161959.885642-7-sdf@fomichev.me Signed-off-by: Jakub Kicinski <kuba@kernel.org>		2026-08-03 16:43:54 -07:00
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Kconfig	treewide: Add SPDX license identifier - Makefile/Kconfig	2019-05-21 10:50:46 +02:00
Makefile	xsk: Introduce AF_XDP buffer allocation API	2020-05-21 17:31:26 -07:00
xdp_umem.c	xsk: require at least 16 bytes of TX metadata	2026-08-03 16:43:53 -07:00
xdp_umem.h	xsk: Fix umem cleanup bug at socket destruct	2020-11-20 15:52:39 +01:00
xsk_buff_pool.c	xsk: validate metadata when processing requests	2026-08-03 16:43:54 -07:00
xsk_diag.c	net: change sock.sk_ino and sock_i_ino() to u64	2026-03-06 14:31:26 +01:00
xsk_queue.c	Convert 'alloc_obj' family to use the new default GFP_KERNEL argument	2026-02-21 17:09:51 -08:00
xsk_queue.h	xsk: reclaim invalid Tx descriptors in ZC batch path	2026-07-24 15:12:14 -07:00
xsk.c	xsk: validate launch-time metadata size	2026-08-03 16:43:54 -07:00
xsk.h	xsk: remove repeated defines	2026-03-16 19:28:21 -07:00
xskmap.c	xskmap: reject TX-only AF_XDP sockets	2026-05-09 16:17:01 -07:00