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 --- tools/perf/util/pmus.h | 43 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 43 insertions(+) create mode 100644 tools/perf/util/pmus.h (limited to 'tools/perf/util/pmus.h') diff --git a/tools/perf/util/pmus.h b/tools/perf/util/pmus.h new file mode 100644 index 000000000..0d55edb3f --- /dev/null +++ b/tools/perf/util/pmus.h @@ -0,0 +1,43 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef __PMUS_H +#define __PMUS_H + +#include +#include + +struct perf_event_attr; +struct perf_pmu; +struct print_callbacks; + +size_t pmu_name_len_no_suffix(const char *str); +/* Exposed for testing only. */ +int pmu_name_cmp(const char *lhs_pmu_name, const char *rhs_pmu_name); + +void perf_pmus__destroy(void); + +struct perf_pmu *perf_pmus__find(const char *name); +struct perf_pmu *perf_pmus__find_by_type(unsigned int type); +struct perf_pmu *perf_pmus__find_by_attr(const struct perf_event_attr *attr); + +struct perf_pmu *perf_pmus__scan(struct perf_pmu *pmu); +struct perf_pmu *perf_pmus__scan_core(struct perf_pmu *pmu); +struct perf_pmu *perf_pmus__scan_for_event(struct perf_pmu *pmu, const char *event); +struct perf_pmu *perf_pmus__scan_matching_wildcard(struct perf_pmu *pmu, const char *wildcard); +struct perf_pmu *perf_pmus__scan_for_uncore_id(struct perf_pmu *pmu, const char *compat); + +const struct perf_pmu *perf_pmus__pmu_for_pmu_filter(const char *str); + +void perf_pmus__print_pmu_events(const struct print_callbacks *print_cb, void *print_state); +void perf_pmus__print_raw_pmu_events(const struct print_callbacks *print_cb, void *print_state); +bool perf_pmus__have_event(const char *pname, const char *name); +int perf_pmus__num_core_pmus(void); +bool perf_pmus__supports_extended_type(void); + +struct perf_pmu *perf_pmus__add_test_pmu(int test_sysfs_dirfd, const char *name); +struct perf_pmu *perf_pmus__add_test_hwmon_pmu(const char *hwmon_dir, + const char *sysfs_name, + const char *name); +struct perf_pmu *perf_pmus__fake_pmu(void); +struct perf_pmu *perf_pmus__find_core_pmu(void); + +#endif /* __PMUS_H */ -- cgit v1.3.1