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CVE-2021-3573

Quick assessment

Affected
n/a kernel
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

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 HCI subsystem存在资源管理错误漏洞，该漏洞源于HCI subsystem在用户断开蓝牙适配器或其他方式触发注销蓝牙设备事件时出现了一个漏洞。攻击者利用该漏洞使系统崩溃或升级他们在系统上的特权。

AI Predicted 7.8 Difficulty: Moderate EPSS 0.37% · P29

Possible ATT&CK Techniques 1 AI

T1068 · Exploitation for Privilege Escalation
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I. Basic Information for CVE-2021-3573

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
A use-after-free in function hci_sock_bound_ioctl() of the Linux kernel HCI subsystem was found in the way user calls ioct HCIUNBLOCKADDR or other way triggers race condition of the call hci_unregister_dev() together with one of the calls hci_sock_blacklist_add(), hci_sock_blacklist_del(), hci_get_conn_info(), hci_get_auth_info(). A privileged local user could use this flaw to crash the system or escalate their privileges on the system. This flaw affects the Linux kernel versions prior to 5.13-rc5.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
使用共享资源的并发执行不恰当同步问题(竞争条件)
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
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 HCI subsystem存在资源管理错误漏洞，该漏洞源于HCI subsystem在用户断开蓝牙适配器或其他方式触发注销蓝牙设备事件时出现了一个漏洞。攻击者利用该漏洞使系统崩溃或升级他们在系统上的特权。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
- kernel kernel 5.13-rc5 -

II. Public POCs for CVE-2021-3573

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III. Intelligence Information for CVE-2021-3573

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Patches & Fixes for CVE-2021-3573 (1)

Vendor Advisories for CVE-2021-3573 (1)

Mailing List Discussions for CVE-2021-3573 (2)

Same Patch Batch · n/a · 2021-08-13 · 57 CVEs total

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CVE-2021-21812 AT&T Labs Xmill 缓冲区错误漏洞
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CVE-2021-21829 AT&T Labs Xmill 缓冲区错误漏洞
CVE-2021-21814 AT&T Labs Xmill 参数注入漏洞
CVE-2021-36788 TYPO3 跨站脚本漏洞
CVE-2020-18759 MAC1100 PLC 信息泄露漏洞
CVE-2020-18758 MAC1100 PLC 命令注入漏洞
CVE-2021-36786 TYPO3 信息泄露漏洞
CVE-2020-18756 MAC1100 PLC 缓冲区错误漏洞
CVE-2020-18754 MAC1100 PLC 信息泄露漏洞
CVE-2020-18753 MAC1100 PLC 安全漏洞
CVE-2021-36792 TYPO3 安全漏洞
CVE-2021-36791 TYPO3 信息泄露漏洞
CVE-2021-36790 TYPO3 跨站脚本漏洞
CVE-2021-36789 TYPO3 SQL注入漏洞
CVE-2021-36380 Sunhillo SureLine 操作系统命令注入漏洞
CVE-2021-37028 HG8045Q 操作系统命令注入漏洞

Showing top 20 of 57 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: kernel
Same vendor: n/a
Same weakness: CWE-362

V. Comments for CVE-2021-3573

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