CVE-2025-38458

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> atm: clip: Fix NULL pointer dereference in vcc_sendmsg()<br /> <br /> atmarpd_dev_ops does not implement the send method, which may cause crash<br /> as bellow.<br /> <br /> BUG: kernel NULL pointer dereference, address: 0000000000000000<br /> PGD 0 P4D 0<br /> Oops: Oops: 0010 [#1] SMP KASAN NOPTI<br /> CPU: 0 UID: 0 PID: 5324 Comm: syz.0.0 Not tainted 6.15.0-rc6-syzkaller-00346-g5723cc3450bc #0 PREEMPT(full)<br /> Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014<br /> RIP: 0010:0x0<br /> Code: Unable to access opcode bytes at 0xffffffffffffffd6.<br /> RSP: 0018:ffffc9000d3cf778 EFLAGS: 00010246<br /> RAX: 1ffffffff1910dd1 RBX: 00000000000000c0 RCX: dffffc0000000000<br /> RDX: ffffc9000dc82000 RSI: ffff88803e4c4640 RDI: ffff888052cd0000<br /> RBP: ffffc9000d3cf8d0 R08: ffff888052c9143f R09: 1ffff1100a592287<br /> R10: dffffc0000000000 R11: 0000000000000000 R12: 1ffff92001a79f00<br /> R13: ffff888052cd0000 R14: ffff88803e4c4640 R15: ffffffff8c886e88<br /> FS: 00007fbc762566c0(0000) GS:ffff88808d6c2000(0000) knlGS:0000000000000000<br /> CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033<br /> CR2: ffffffffffffffd6 CR3: 0000000041f1b000 CR4: 0000000000352ef0<br /> DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000<br /> DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400<br /> Call Trace:<br /> <br /> vcc_sendmsg+0xa10/0xc50 net/atm/common.c:644<br /> sock_sendmsg_nosec net/socket.c:712 [inline]<br /> __sock_sendmsg+0x219/0x270 net/socket.c:727<br /> ____sys_sendmsg+0x52d/0x830 net/socket.c:2566<br /> ___sys_sendmsg+0x21f/0x2a0 net/socket.c:2620<br /> __sys_sendmmsg+0x227/0x430 net/socket.c:2709<br /> __do_sys_sendmmsg net/socket.c:2736 [inline]<br /> __se_sys_sendmmsg net/socket.c:2733 [inline]<br /> __x64_sys_sendmmsg+0xa0/0xc0 net/socket.c:2733<br /> do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]<br /> do_syscall_64+0xf6/0x210 arch/x86/entry/syscall_64.c:94<br /> entry_SYSCALL_64_after_hwframe+0x77/0x7f