CVE-2024-42141

In the Linux kernel, the following vulnerability has been resolved:

Bluetooth: ISO: Check socket flag instead of hcon

This fixes the following Smatch static checker warning:

net/bluetooth/iso.c:1364 isosockrecvmsg() error: we previously assumed 'pi->conn->hcon' could be null (line 1359)

net/bluetooth/iso.c 1347 static int isosockrecvmsg(struct socket *sock, struct msghdr *msg, 1348 sizet len, int flags) 1349 { 1350 struct sock *sk = sock->sk; 1351 struct isopinfo *pi = isopi(sk); 1352 1353 BTDBG("sk %p", sk); 1354 1355 if (testandclearbit(BTSKDEFERSETUP, &btsk(sk)->flags)) { 1356 locksock(sk); 1357 switch (sk->skstate) { 1358 case BTCONNECT2: 1359 if (pi->conn->hcon && ^^^^^^^^^^^^^^ If ->hcon is NULL

1360 testbit(HCICONNPASYNC, &pi->conn->hcon->flags)) { 1361 isoconnbigsync(sk); 1362 sk->skstate = BTLISTEN; 1363 } else { --> 1364 isoconndeferaccept(pi->conn->hcon); ^^^^^^^^^^^^^^ then we're toast

1365 sk->skstate = BTCONFIG; 1366 } 1367 releasesock(sk); 1368 return 0; 1369 case BTCONNECTED: 1370 if (testbit(BTSKPASYNC,