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/alpha/boot/bootloader.lds | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) create mode 100644 arch/alpha/boot/bootloader.lds (limited to 'arch/alpha/boot/bootloader.lds') diff --git a/arch/alpha/boot/bootloader.lds b/arch/alpha/boot/bootloader.lds new file mode 100644 index 000000000..8cdff54c6 --- /dev/null +++ b/arch/alpha/boot/bootloader.lds @@ -0,0 +1,25 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +OUTPUT_FORMAT("elf64-alpha") +ENTRY(__start) +printk = srm_printk; +SECTIONS +{ + . = 0x20000000; + .text : { *(.text) } + _etext = .; + PROVIDE (etext = .); + .rodata : { *(.rodata) *(.rodata.*) } + .data : { *(.data) CONSTRUCTORS } + .got : { *(.got) } + .sdata : { *(.sdata) } + _edata = .; + PROVIDE (edata = .); + .sbss : { *(.sbss) *(.scommon) } + .bss : { *(.bss) *(COMMON) } + _end = . ; + PROVIDE (end = .); + + .mdebug 0 : { *(.mdebug) } + .note 0 : { *(.note) } + .comment 0 : { *(.comment) } +} -- cgit v1.3.1