Linux/Unix 主机中安装的一个或多个程序包受到一个漏洞影响，而供应商没有提供补丁程序。

  - atmatmtcp防止 atmtcp_recv_control() 中的任意写入。 syzbot 报告了以下错误消息。 [0] 通过 connect() 或 close() 调用 atmtcp_v_open() 或 atmtcp_v_close() 时会调用 atmtcp_send_control() 以发送内核内特殊消息。该消息在 atmtcp_control.hdr.length 中具有 ATMTCP_HDR_MAGIC。此外struct atm_vcc 的指针会设置为 atmtcp_control.vcc。值得注意的是 struct atmtcp_control 是 uAPI但具有用于内核指针的空间。 struct atmtcp_control { struct atmtcp_hdr hdr; /* 必须为第一个
    */ ... atm_kptr_t vcc; /* 两个方向 */ ... } __ATM_API_ALIGN; typedef struct { unsigned char _[8]; }
    __ATM_API_ALIGN atm_kptr_t;特殊消息在 atmtcp_c_send() 调用的 atmtcp_recv_control() 中进行处理。 atmtcp_c_send() 为 vcc->dev->ops->send() 从 2 条路径调用1. .ndo_start_xmit() (vcc->send() == atm_send_aal0()) 2. vcc_sendmsg() 问题为 sendmsg () 不验证消息长度用户空间可滥用 atmtcp_recv_control() 覆盖 atmtcp_control 编制的任何 kptr。我们添加一个新的 ->pre_send() 挂钩以验证来自 sendmsg() 的消息。 [0]Oops一般保护错误可能是非规范地址 0xdffffc00200000ab0000 [#1] SMP KASAN PTI KASAN可能是 user-memory-access in range [0x0000000100000558-0x000000010000055f] CPU: 0 UID: 0 PID: 5865 Commsyz-executor331 Not tainted 6.17.0-rc1-syzkaller-00215-gbab3ce404553 #0 PREEMPT(full) 硬件名称Google Google 计算引擎/Google 计算引擎、BIOS Google 07/12/2025 RIP: 0010:atmtcp_recv_control drivers/ atm/atmtcp.c:93 [内联] RIP0010:atmtcp_c_send+0x1da/0x950 drivers/atm/atmtcp.c:297 代码4d 8d 75 1a 4c 89 f0 48 c1 e8 03 42 0f b6 04 20 84 c0 0f 85 15 06 00 00 41 0f b7 1e 4d 8d b7 60 05 00 00 4c 89 f0 48 c1 e8 03 <42> 0f b6 04 20 84 c0 0f 85 13 06 00 00 66 41 89 1e 4d 8d 00 00 4c 89 f0 48 c1 e8 03 EFLAGS00010203 RAX
    00000000200000ab RBX: 0000000000000000 RCX: 0000000000000000 RDX: ffff88802a510000 RSI: 00000000ffffffff RDI: ffff888030a6068c RBP: ffff88802699fb40 R08: ffff888030a606eb R09: 1ffff1100614c0dd R10:
     R11dffffc0000000000  : ffffffff8718fc40 R12: dffffc0000000000 R13: ffff888030a60680 R14: 000000010000055f R15: 00000000ffffffff FS: 00007f8d7e9236c0(0000) GS:ffff888125c1c000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000045ad50 CR3: 0000000075bde000 CR4: 00000000003526f0 Call Trace: <TASK> vcc_sendmsg+0xa10/0xc60 net/atm/common.c:645 sock_sendmsg_nosec net/socket.c:714 [inline] __sock_sendmsg+0x219/0x270 net/socket.c:729 ____sys_sendmsg +0x505/0x830 net/socket.c:2614
    ___sys_sendmsg+0x21f/0x2a0 net/socket.c:2668 __sys_sendmsg net/socket.c:2700 [内联] __do_sys_sendmsg net/socket.c:2705 [内联] __se_sys_sendmsg net/socket.c:2703 [内联] __x64_sys_sendmsg+0x169b net/socket.c:2703 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [内联] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f8d7e96a4a9 代码28 00 00 00 75 05 48 83 c4 28 c3 e8 51 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d ff 01 ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48 RSP
    002b00007f8d7e923198 EFLAGS00000246 ORIG_RAX000000000000002e RAXffffffffffffffda RBX
    00007f8d7e9f4308 RCX: 00007f8d7e96a4a9 RDX: 0000000000000000 RSI: 0000200000000240 RDI: 0000000000000005 RBP: 00007f8d7e9f4300 R08: 65732f636f72702f R09: 65732f636f72702f R10: 65732f636f72702f R11:
    0000000000000246 R1200007f8d7e9c10ac R1300007f8d7e9231a0 R140000200000000200 R150000200000000250 </TASK> 中链接的模块(CVE-2025-39828)

请注意，Nessus 依赖供应商报告的程序包是否存在进行判断。

检测

Linux Distros 未修补的漏洞：CVE-2025-39828

high Nessus 插件 ID 265160

版本 1.17