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/ocfs2/localalloc.h | 52 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 52 insertions(+) create mode 100644 fs/ocfs2/localalloc.h (limited to 'fs/ocfs2/localalloc.h') diff --git a/fs/ocfs2/localalloc.h b/fs/ocfs2/localalloc.h new file mode 100644 index 000000000..08f925b7e --- /dev/null +++ b/fs/ocfs2/localalloc.h @@ -0,0 +1,52 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * localalloc.h + * + * Function prototypes + * + * Copyright (C) 2002, 2004 Oracle. All rights reserved. + */ + +#ifndef OCFS2_LOCALALLOC_H +#define OCFS2_LOCALALLOC_H + +int ocfs2_load_local_alloc(struct ocfs2_super *osb); + +void ocfs2_shutdown_local_alloc(struct ocfs2_super *osb); + +void ocfs2_la_set_sizes(struct ocfs2_super *osb, int requested_mb); +unsigned int ocfs2_la_default_mb(struct ocfs2_super *osb); + +int ocfs2_begin_local_alloc_recovery(struct ocfs2_super *osb, + int node_num, + struct ocfs2_dinode **alloc_copy); + +int ocfs2_complete_local_alloc_recovery(struct ocfs2_super *osb, + struct ocfs2_dinode *alloc); + +int ocfs2_alloc_should_use_local(struct ocfs2_super *osb, + u64 bits); + +struct ocfs2_alloc_context; +int ocfs2_reserve_local_alloc_bits(struct ocfs2_super *osb, + u32 bits_wanted, + struct ocfs2_alloc_context *ac); + +int ocfs2_claim_local_alloc_bits(struct ocfs2_super *osb, + handle_t *handle, + struct ocfs2_alloc_context *ac, + u32 bits_wanted, + u32 *bit_off, + u32 *num_bits); + +int ocfs2_free_local_alloc_bits(struct ocfs2_super *osb, + handle_t *handle, + struct ocfs2_alloc_context *ac, + u32 bit_off, + u32 num_bits); + +void ocfs2_local_alloc_seen_free_bits(struct ocfs2_super *osb, + unsigned int num_clusters); +void ocfs2_la_enable_worker(struct work_struct *work); + +#endif /* OCFS2_LOCALALLOC_H */ -- cgit v1.3.1