CVE-2022-49111— Linux kernel 安全漏洞
一分钟漏洞结论
影响对象
Linux Linux
利用判断
尚无明确在野利用证据，仍需结合暴露面评估
建议动作
优先检查厂商安全公告和参考链接中的修复版本；无法立即升级时，限制受影响服务暴露并加强监测。
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于Bluetooth驱动在hci_send_acl中存在释放后重用问题。
可能的 ATT&CK 技术 1 AI
T1059 · Command and Scripting Interpreter影响版本矩阵 20
| 厂商 | 产品 | 版本范围 | 状态 |
|---|---|---|---|
| Linux | Linux | 9eef6b3a9e38d5f8ad315b2a7db153392e6a77d6< c41de54b0a963e59e4dd04c029a4a6d73f45ef9c |
affected |
9eef6b3a9e38d5f8ad315b2a7db153392e6a77d6< 643a6c26bd32e339d00ad97b8822b6db009e803c |
affected | ||
9eef6b3a9e38d5f8ad315b2a7db153392e6a77d6< 684e505406abaeabe0058e9776f9210bf2747953 |
affected | ||
9eef6b3a9e38d5f8ad315b2a7db153392e6a77d6< 3803d896ddd97c7c16689a5381c0960040727647 |
affected | ||
9eef6b3a9e38d5f8ad315b2a7db153392e6a77d6< 2cc803804ec9a296b3156855d6c8c4ca1c6b84be |
affected | ||
9eef6b3a9e38d5f8ad315b2a7db153392e6a77d6< d404765dffdbd8dcd14758695d0c96c52fb2e624 |
affected | ||
9eef6b3a9e38d5f8ad315b2a7db153392e6a77d6< 4da302b90b96c309987eb9b37c8547f939f042d2 |
affected | ||
9eef6b3a9e38d5f8ad315b2a7db153392e6a77d6< b3c2ea1fd444b3bb7b82bfd2c3a45418f85c2502 |
affected | ||
| … +12 条更多 | |||
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一、 漏洞 CVE-2022-49111 基础信息
漏洞信息
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Vulnerability Title
Bluetooth: Fix use after free in hci_send_acl
来源: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved:
Bluetooth: Fix use after free in hci_send_acl
This fixes the following trace caused by receiving
HCI_EV_DISCONN_PHY_LINK_COMPLETE which does call hci_conn_del without
first checking if conn->type is in fact AMP_LINK and in case it is
do properly cleanup upper layers with hci_disconn_cfm:
==================================================================
BUG: KASAN: use-after-free in hci_send_acl+0xaba/0xc50
Read of size 8 at addr ffff88800e404818 by task bluetoothd/142
CPU: 0 PID: 142 Comm: bluetoothd Not tainted
5.17.0-rc5-00006-gda4022eeac1a #7
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS
rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
Call Trace:
<TASK>
dump_stack_lvl+0x45/0x59
print_address_description.constprop.0+0x1f/0x150
kasan_report.cold+0x7f/0x11b
hci_send_acl+0xaba/0xc50
l2cap_do_send+0x23f/0x3d0
l2cap_chan_send+0xc06/0x2cc0
l2cap_sock_sendmsg+0x201/0x2b0
sock_sendmsg+0xdc/0x110
sock_write_iter+0x20f/0x370
do_iter_readv_writev+0x343/0x690
do_iter_write+0x132/0x640
vfs_writev+0x198/0x570
do_writev+0x202/0x280
do_syscall_64+0x38/0x90
entry_SYSCALL_64_after_hwframe+0x44/0xae
RSP: 002b:00007ffce8a099b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000014
Code: 0f 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b8 0f 1f 00 f3
0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 14 00 00 00 0f 05
<48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 89 54 24 1c 48 89 74 24 10
RDX: 0000000000000001 RSI: 00007ffce8a099e0 RDI: 0000000000000015
RAX: ffffffffffffffda RBX: 00007ffce8a099e0 RCX: 00007f788fc3cf77
R10: 00007ffce8af7080 R11: 0000000000000246 R12: 000055e4ccf75580
RBP: 0000000000000015 R08: 0000000000000002 R09: 0000000000000001
</TASK>
R13: 000055e4ccf754a0 R14: 000055e4ccf75cd0 R15: 000055e4ccf4a6b0
Allocated by task 45:
kasan_save_stack+0x1e/0x40
__kasan_kmalloc+0x81/0xa0
hci_chan_create+0x9a/0x2f0
l2cap_conn_add.part.0+0x1a/0xdc0
l2cap_connect_cfm+0x236/0x1000
le_conn_complete_evt+0x15a7/0x1db0
hci_le_conn_complete_evt+0x226/0x2c0
hci_le_meta_evt+0x247/0x450
hci_event_packet+0x61b/0xe90
hci_rx_work+0x4d5/0xc50
process_one_work+0x8fb/0x15a0
worker_thread+0x576/0x1240
kthread+0x29d/0x340
ret_from_fork+0x1f/0x30
Freed by task 45:
kasan_save_stack+0x1e/0x40
kasan_set_track+0x21/0x30
kasan_set_free_info+0x20/0x30
__kasan_slab_free+0xfb/0x130
kfree+0xac/0x350
hci_conn_cleanup+0x101/0x6a0
hci_conn_del+0x27e/0x6c0
hci_disconn_phylink_complete_evt+0xe0/0x120
hci_event_packet+0x812/0xe90
hci_rx_work+0x4d5/0xc50
process_one_work+0x8fb/0x15a0
worker_thread+0x576/0x1240
kthread+0x29d/0x340
ret_from_fork+0x1f/0x30
The buggy address belongs to the object at ffff88800c0f0500
The buggy address is located 24 bytes inside of
which belongs to the cache kmalloc-128 of size 128
The buggy address belongs to the page:
128-byte region [ffff88800c0f0500, ffff88800c0f0580)
flags: 0x100000000000200(slab|node=0|zone=1)
page:00000000fe45cd86 refcount:1 mapcount:0
mapping:0000000000000000 index:0x0 pfn:0xc0f0
raw: 0000000000000000 0000000080100010 00000001ffffffff
0000000000000000
raw: 0100000000000200 ffffea00003a2c80 dead000000000004
ffff8880078418c0
page dumped because: kasan: bad access detected
ffff88800c0f0400: 00 00 00 00 00 00 00 00 00 00 00 00 00 fc fc fc
Memory state around the buggy address:
>ffff88800c0f0500: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff88800c0f0480: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
ffff88800c0f0580: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
---truncated---
来源: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
来源: CVE Program / CVE List V5
Vulnerability Type
N/A
来源: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于Bluetooth驱动在hci_send_acl中存在释放后重用问题。
来源: 中国国家信息安全漏洞库 CNNVD
CVSS Information
N/A
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Type
N/A
来源: 中国国家信息安全漏洞库 CNNVD
受影响产品
二、漏洞 CVE-2022-49111 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
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CVE-2022-49111 补丁与修复 (9)
同批安全公告 · Linux · 2025-02-26 · 共 706 条
| CVE-2022-49362 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2022-49149 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2022-49561 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2022-49407 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2022-49201 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2022-49194 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2022-49093 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2022-49260 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2022-49418 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2022-49094 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2022-49356 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2022-49280 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2022-49058 | 9.1 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2022-49470 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2022-49114 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2022-49471 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2022-49535 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2022-49238 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2022-49519 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2022-49138 | 8.8 HIGH | Linux kernel 安全漏洞 |
显示前 20 条，共 706 条。 查看全部 → →
IV. Related Vulnerabilities
V. Comments for CVE-2022-49111
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