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 --- Documentation/devicetree/bindings/csky/cpus.txt | 73 +++++++++++++++++++++++++ Documentation/devicetree/bindings/csky/pmu.txt | 38 +++++++++++++ 2 files changed, 111 insertions(+) create mode 100644 Documentation/devicetree/bindings/csky/cpus.txt create mode 100644 Documentation/devicetree/bindings/csky/pmu.txt (limited to 'Documentation/devicetree/bindings/csky') diff --git a/Documentation/devicetree/bindings/csky/cpus.txt b/Documentation/devicetree/bindings/csky/cpus.txt new file mode 100644 index 000000000..ae79412f2 --- /dev/null +++ b/Documentation/devicetree/bindings/csky/cpus.txt @@ -0,0 +1,73 @@ +================== +C-SKY CPU Bindings +================== + +The device tree allows to describe the layout of CPUs in a system through +the "cpus" node, which in turn contains a number of subnodes (ie "cpu") +defining properties for every cpu. + +Only SMP system need to care about the cpus node and single processor +needn't define cpus node at all. + +===================================== +cpus and cpu node bindings definition +===================================== + +- cpus node + + Description: Container of cpu nodes + + The node name must be "cpus". + + A cpus node must define the following properties: + + - #address-cells + Usage: required + Value type: + Definition: must be set to 1 + - #size-cells + Usage: required + Value type: + Definition: must be set to 0 + +- cpu node + + Description: Describes one of SMP cores + + PROPERTIES + + - device_type + Usage: required + Value type: + Definition: must be "cpu" + - reg + Usage: required + Value type: + Definition: CPU index + - compatible: + Usage: required + Value type: + Definition: must contain "csky", eg: + "csky,610" + "csky,807" + "csky,810" + "csky,860" + +Example: +-------- + + cpus { + #address-cells = <1>; + #size-cells = <0>; + cpu@0 { + device_type = "cpu"; + reg = <0>; + status = "ok"; + }; + + cpu@1 { + device_type = "cpu"; + reg = <1>; + status = "ok"; + }; + }; diff --git a/Documentation/devicetree/bindings/csky/pmu.txt b/Documentation/devicetree/bindings/csky/pmu.txt new file mode 100644 index 000000000..728d05ca6 --- /dev/null +++ b/Documentation/devicetree/bindings/csky/pmu.txt @@ -0,0 +1,38 @@ +=============================== +C-SKY Performance Monitor Units +=============================== + +C-SKY Performance Monitor is designed for ck807/ck810/ck860 SMP soc and +it could count cpu's events for helping analysis performance issues. + +============================ +PMU node bindings definition +============================ + + Description: Describes PMU + + PROPERTIES + + - compatible + Usage: required + Value type: + Definition: must be "csky,csky-pmu" + - interrupts + Usage: required + Value type: + Definition: must be pmu irq num defined by soc + - count-width + Usage: optional + Value type: + Definition: the width of pmu counter + +Examples: +--------- +#include + + pmu: performace-monitor { + compatible = "csky,csky-pmu"; + interrupts = <23 IRQ_TYPE_EDGE_RISING>; + interrupt-parent = <&intc>; + count-width = <48>; + }; -- cgit v1.3.1