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| author | Muhammad Bilal <meatuni001@gmail.com> | 2026-07-28 17:54:55 +0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2026-09-01 12:15:16 +0200 |
| commit | ff917923f4fb9c83717ba135ee47d7e4c1567bb7 (patch) | |
| tree | c38fd8fcf58e1937b17fdbc6518b6f8b797fc15a /arch/x86/hyperv/Makefile | |
| download | linux-stable-ff917923f4fb9c83717ba135ee47d7e4c1567bb7.tar.gz linux-stable-ff917923f4fb9c83717ba135ee47d7e4c1567bb7.zip | |
staging: rtl8723bs: fix OOB read in rtw_action_frame_parse()grafted
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 <meatuni001@gmail.com>
Link: https://patch.msgid.link/20260728125456.32359-3-meatuni001@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch/x86/hyperv/Makefile')
| -rw-r--r-- | arch/x86/hyperv/Makefile | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/arch/x86/hyperv/Makefile b/arch/x86/hyperv/Makefile new file mode 100644 index 000000000..56292102a --- /dev/null +++ b/arch/x86/hyperv/Makefile @@ -0,0 +1,22 @@ +# SPDX-License-Identifier: GPL-2.0-only +obj-y := hv_init.o mmu.o nested.o irqdomain.o ivm.o +obj-$(CONFIG_X86_64) += hv_apic.o +obj-$(CONFIG_HYPERV_VTL_MODE) += hv_vtl.o mshv_vtl_asm.o + +$(obj)/mshv_vtl_asm.o: $(obj)/mshv-asm-offsets.h + +$(obj)/mshv-asm-offsets.h: $(obj)/mshv-asm-offsets.s FORCE + $(call filechk,offsets,__MSHV_ASM_OFFSETS_H__) + +ifdef CONFIG_X86_64 +obj-$(CONFIG_PARAVIRT_SPINLOCKS) += hv_spinlock.o + + ifdef CONFIG_MSHV_ROOT + CFLAGS_REMOVE_hv_trampoline.o += -pg + CFLAGS_hv_trampoline.o += -fno-stack-protector + obj-$(CONFIG_CRASH_DUMP) += hv_crash.o hv_trampoline.o + endif +endif + +targets += mshv-asm-offsets.s +clean-files += mshv-asm-offsets.h |