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 --- include/xen/arm/hypercall.h | 76 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 76 insertions(+) create mode 100644 include/xen/arm/hypercall.h (limited to 'include/xen/arm/hypercall.h') diff --git a/include/xen/arm/hypercall.h b/include/xen/arm/hypercall.h new file mode 100644 index 000000000..9d7dd1c65 --- /dev/null +++ b/include/xen/arm/hypercall.h @@ -0,0 +1,76 @@ +/****************************************************************************** + * hypercall.h + * + * Linux-specific hypervisor handling. + * + * Stefano Stabellini , Citrix, 2012 + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License version 2 + * as published by the Free Software Foundation; or, when distributed + * separately from the Linux kernel or incorporated into other + * software packages, subject to the following license: + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this source file (the "Software"), to deal in the Software without + * restriction, including without limitation the rights to use, copy, modify, + * merge, publish, distribute, sublicense, and/or sell copies of the Software, + * and to permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS + * IN THE SOFTWARE. + */ + +#ifndef _ASM_ARM_XEN_HYPERCALL_H +#define _ASM_ARM_XEN_HYPERCALL_H + +#include + +#include +#include +#include + +struct xen_dm_op_buf; + +long privcmd_call(unsigned call, unsigned long a1, + unsigned long a2, unsigned long a3, + unsigned long a4, unsigned long a5); +int HYPERVISOR_xen_version(int cmd, void *arg); +int HYPERVISOR_console_io(int cmd, int count, char *str); +int HYPERVISOR_grant_table_op(unsigned int cmd, void *uop, unsigned int count); +int HYPERVISOR_sched_op(int cmd, void *arg); +int HYPERVISOR_event_channel_op(int cmd, void *arg); +unsigned long HYPERVISOR_hvm_op(int op, void *arg); +int HYPERVISOR_memory_op(unsigned int cmd, void *arg); +int HYPERVISOR_physdev_op(int cmd, void *arg); +int HYPERVISOR_vcpu_op(int cmd, int vcpuid, void *extra_args); +int HYPERVISOR_vm_assist(unsigned int cmd, unsigned int type); +int HYPERVISOR_dm_op(domid_t domid, unsigned int nr_bufs, + struct xen_dm_op_buf *bufs); +int HYPERVISOR_platform_op_raw(void *arg); +static inline int HYPERVISOR_platform_op(struct xen_platform_op *op) +{ + op->interface_version = XENPF_INTERFACE_VERSION; + return HYPERVISOR_platform_op_raw(op); +} +int HYPERVISOR_multicall(struct multicall_entry *calls, uint32_t nr); + +static inline int +HYPERVISOR_suspend(unsigned long start_info_mfn) +{ + struct sched_shutdown r = { .reason = SHUTDOWN_suspend }; + + /* start_info_mfn is unused on ARM */ + return HYPERVISOR_sched_op(SCHEDOP_shutdown, &r); +} + +#endif /* _ASM_ARM_XEN_HYPERCALL_H */ -- cgit v1.3.1