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 --- fs/ext4/Makefile | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) create mode 100644 fs/ext4/Makefile (limited to 'fs/ext4/Makefile') diff --git a/fs/ext4/Makefile b/fs/ext4/Makefile new file mode 100644 index 000000000..3f9fc0eb8 --- /dev/null +++ b/fs/ext4/Makefile @@ -0,0 +1,21 @@ +# SPDX-License-Identifier: GPL-2.0 +# +# Makefile for the linux ext4-filesystem routines. +# + +obj-$(CONFIG_EXT4_FS) += ext4.o + +ext4-y := balloc.o bitmap.o block_validity.o dir.o ext4_jbd2.o extents.o \ + extents_status.o file.o fsmap.o fsync.o hash.o ialloc.o \ + indirect.o inline.o inode.o ioctl.o mballoc.o migrate.o \ + mmp.o move_extent.o namei.o page-io.o readpage.o resize.o \ + super.o symlink.o sysfs.o xattr.o xattr_hurd.o xattr_trusted.o \ + xattr_user.o fast_commit.o orphan.o + +ext4-$(CONFIG_EXT4_FS_POSIX_ACL) += acl.o +ext4-$(CONFIG_EXT4_FS_SECURITY) += xattr_security.o +ext4-test-objs += inode-test.o mballoc-test.o \ + extents-test.o hash-test.o +obj-$(CONFIG_EXT4_KUNIT_TESTS) += ext4-test.o +ext4-$(CONFIG_FS_VERITY) += verity.o +ext4-$(CONFIG_FS_ENCRYPTION) += crypto.o -- cgit v1.3.1