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 --- lib/fonts/Makefile | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) create mode 100644 lib/fonts/Makefile (limited to 'lib/fonts/Makefile') diff --git a/lib/fonts/Makefile b/lib/fonts/Makefile new file mode 100644 index 000000000..7202a70a5 --- /dev/null +++ b/lib/fonts/Makefile @@ -0,0 +1,23 @@ +# SPDX-License-Identifier: GPL-2.0 +# Font handling + +font-y := fonts.o +font-$(CONFIG_FRAMEBUFFER_CONSOLE_ROTATION) += font_rotate.o + +# Built-in fonts; sorted by Family-Size in ascending order +font-$(CONFIG_FONT_6x8) += font_6x8.o +font-$(CONFIG_FONT_6x10) += font_6x10.o +font-$(CONFIG_FONT_6x11) += font_6x11.o +font-$(CONFIG_FONT_7x14) += font_7x14.o +font-$(CONFIG_FONT_8x8) += font_8x8.o +font-$(CONFIG_FONT_8x16) += font_8x16.o +font-$(CONFIG_FONT_10x18) += font_10x18.o +font-$(CONFIG_FONT_ACORN_8x8) += font_acorn_8x8.o +font-$(CONFIG_FONT_MINI_4x6) += font_mini_4x6.o +font-$(CONFIG_FONT_PEARL_8x8) += font_pearl_8x8.o +font-$(CONFIG_FONT_SUN8x16) += font_sun8x16.o +font-$(CONFIG_FONT_SUN12x22) += font_sun12x22.o +font-$(CONFIG_FONT_TER10x18) += font_ter10x18.o +font-$(CONFIG_FONT_TER16x32) += font_ter16x32.o + +obj-$(CONFIG_FONT_SUPPORT) += font.o -- cgit v1.3.1