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/ntfs/reparse.h | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) create mode 100644 fs/ntfs/reparse.h (limited to 'fs/ntfs/reparse.h') diff --git a/fs/ntfs/reparse.h b/fs/ntfs/reparse.h new file mode 100644 index 000000000..b6360b045 --- /dev/null +++ b/fs/ntfs/reparse.h @@ -0,0 +1,24 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * Copyright (c) 2008-2021 Jean-Pierre Andre + * Copyright (c) 2025 LG Electronics Co., Ltd. + */ + +#ifndef _LINUX_NTFS_REPARSE_H +#define _LINUX_NTFS_REPARSE_H + +extern __le16 reparse_index_name[]; + +int ntfs_parse_reparse(struct ntfs_inode *ni, unsigned int *mode); +unsigned int ntfs_reparse_tag_dt_types(struct ntfs_volume *vol, unsigned long mref); +int ntfs_translate_symlink_path(struct dentry *dentry, const char *target, + char **translated); +int ntfs_reparse_set_wsl_symlink(struct ntfs_inode *ni, + const char *target, int target_len); +int ntfs_reparse_set_native_symlink(struct ntfs_inode *ni, + const char *symname, int symlen); +int ntfs_reparse_set_wsl_not_symlink(struct ntfs_inode *ni, mode_t mode); +int ntfs_delete_reparse_index(struct ntfs_inode *ni); +int ntfs_remove_ntfs_reparse_data(struct ntfs_inode *ni); + +#endif /* _LINUX_NTFS_REPARSE_H */ -- cgit v1.3.1