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/net/transp_v6.h | 63 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 63 insertions(+) create mode 100644 include/net/transp_v6.h (limited to 'include/net/transp_v6.h') diff --git a/include/net/transp_v6.h b/include/net/transp_v6.h new file mode 100644 index 000000000..c0a421fe0 --- /dev/null +++ b/include/net/transp_v6.h @@ -0,0 +1,63 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _TRANSP_V6_H +#define _TRANSP_V6_H + +#include +#include + +/* IPv6 transport protocols */ +extern struct proto rawv6_prot; +extern struct proto udpv6_prot; +extern struct proto tcpv6_prot; +extern struct proto pingv6_prot; + +struct flowi6; +struct ipcm6_cookie; + +/* extension headers */ +int ipv6_exthdrs_init(void); +void ipv6_exthdrs_exit(void); +int ipv6_frag_init(void); +void ipv6_frag_exit(void); + +/* transport protocols */ +int pingv6_init(void); +void pingv6_exit(void); +int rawv6_init(void); +void rawv6_exit(void); +int udpv6_init(void); +void udpv6_exit(void); +int tcpv6_init(void); +void tcpv6_exit(void); + +/* this does all the common and the specific ctl work */ +void ip6_datagram_recv_ctl(struct sock *sk, struct msghdr *msg, + struct sk_buff *skb); +void ip6_datagram_recv_common_ctl(struct sock *sk, struct msghdr *msg, + struct sk_buff *skb); +void ip6_datagram_recv_specific_ctl(struct sock *sk, struct msghdr *msg, + struct sk_buff *skb); + +int ip6_datagram_send_ctl(struct net *net, struct sock *sk, struct msghdr *msg, + struct flowi6 *fl6, struct ipcm6_cookie *ipc6); + +void __ip6_dgram_sock_seq_show(struct seq_file *seq, struct sock *sp, + __u16 srcp, __u16 destp, int rqueue, int bucket); +static inline void +ip6_dgram_sock_seq_show(struct seq_file *seq, struct sock *sp, __u16 srcp, + __u16 destp, int bucket) +{ + __ip6_dgram_sock_seq_show(seq, sp, srcp, destp, sk_rmem_alloc_get(sp), + bucket); +} + +#define LOOPBACK4_IPV6 cpu_to_be32(0x7f000006) + +#define IPV6_SEQ_DGRAM_HEADER \ + " sl " \ + "local_address " \ + "remote_address " \ + "st tx_queue rx_queue tr tm->when retrnsmt" \ + " uid timeout inode ref pointer drops\n" + +#endif -- cgit v1.3.1