From ff917923f4fb9c83717ba135ee47d7e4c1567bb7 Mon Sep 17 00:00:00 2001 From: Muhammad Bilal Date: Tue, 28 Jul 2026 17:54:55 +0500 Subject: staging: rtl8723bs: fix OOB read in rtw_action_frame_parse() rtw_action_frame_parse() takes a frame_len parameter but never actually checks it before indexing into the frame body: const u8 *frame_body = frame + sizeof(struct ieee80211_hdr_3addr); ... c = frame_body[0]; ... a = frame_body[1]; frame_body already points 24 bytes (sizeof(struct ieee80211_hdr_3addr)) into frame, so reading frame_body[0] and frame_body[1] requires frame_len >= 26. A management action frame shorter than that (e.g. exactly 24 bytes, the minimum a malicious peer can send) causes a 1-2 byte out-of-bounds read. This is reachable from rtw_cfg80211_monitor_if_xmit_entry() and cfg80211_rtw_mgmt_tx() in ioctl_cfg80211.c, both of which pass attacker/user-influenced frame buffers and lengths straight through. Add the missing length check before frame_body is dereferenced. Fixes: 554c0a3abf216 ("staging: Add rtl8723bs sdio wifi driver") Cc: stable@vger.kernel.org Signed-off-by: Muhammad Bilal Link: https://patch.msgid.link/20260728125456.32359-3-meatuni001@gmail.com Signed-off-by: Greg Kroah-Hartman --- arch/microblaze/boot/Makefile | 35 +++++++++++++++++++++++++++++++++++ 1 file changed, 35 insertions(+) create mode 100644 arch/microblaze/boot/Makefile (limited to 'arch/microblaze/boot/Makefile') diff --git a/arch/microblaze/boot/Makefile b/arch/microblaze/boot/Makefile new file mode 100644 index 000000000..2b42c370d --- /dev/null +++ b/arch/microblaze/boot/Makefile @@ -0,0 +1,35 @@ +# SPDX-License-Identifier: GPL-2.0 +# +# arch/microblaze/boot/Makefile +# + +targets := linux.bin linux.bin.gz linux.bin.ub simpleImage.* + +OBJCOPYFLAGS := -R .note -R .comment -R .note.gnu.build-id -O binary + +$(obj)/linux.bin: vmlinux FORCE + $(call if_changed,objcopy) + +$(obj)/linux.bin.ub: $(obj)/linux.bin FORCE + $(call if_changed,uimage) + +$(obj)/linux.bin.gz: $(obj)/linux.bin FORCE + $(call if_changed,gzip) + +quiet_cmd_strip = STRIP $< $@$2 + cmd_strip = $(STRIP) -K microblaze_start -K _end -K __log_buf \ + -K _fdt_start $< -o $@$2 + +UIMAGE_LOADADDR = $(CONFIG_KERNEL_BASE_ADDR) + +$(obj)/simpleImage.$(DTB): vmlinux FORCE + $(call if_changed,objcopy) + +$(obj)/simpleImage.$(DTB).ub: $(obj)/simpleImage.$(DTB) FORCE + $(call if_changed,uimage) + +$(obj)/simpleImage.$(DTB).unstrip: vmlinux FORCE + $(call if_changed,copy) + +$(obj)/simpleImage.$(DTB).strip: vmlinux FORCE + $(call if_changed,strip) -- cgit v1.3.1