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CVE-2021-3753

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 存在缓冲区错误漏洞，该漏洞源于 drivers/tty/vt/vt_ioctl.c 中的 vt_k_ioctl 中存在一个竞争条件问题。这可能导致 vt 中的越界读取，因为对 vc_mode 的写访问不受锁定 vt_ioctl (KDSETMDE) 的保护。

AI Predicted 5.5 Difficulty: Hard EPSS 0.36% · P30

Possible ATT&CK Techniques 1 AI

T1530 · Data from Cloud Storage
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I. Basic Information for CVE-2021-3753

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
A race problem was seen in the vt_k_ioctl in drivers/tty/vt/vt_ioctl.c in the Linux kernel, which may cause an out of bounds read in vt as the write access to vc_mode is not protected by lock-in vt_ioctl (KDSETMDE). The highest threat from this vulnerability is to data confidentiality.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存读
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 缓冲区错误漏洞
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 存在缓冲区错误漏洞，该漏洞源于 drivers/tty/vt/vt_ioctl.c 中的 vt_k_ioctl 中存在一个竞争条件问题。这可能导致 vt 中的越界读取，因为对 vc_mode 的写访问不受锁定 vt_ioctl (KDSETMDE) 的保护。
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 Linux kernel 5.15-rc1 -

II. Public POCs for CVE-2021-3753

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III. Intelligence Information for CVE-2021-3753

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Patches & Fixes for CVE-2021-3753 (1)

Vendor Advisories for CVE-2021-3753 (2)

Mailing List Discussions for CVE-2021-3753 (1)

Same Patch Batch · n/a · 2022-02-16 · 50 CVEs total

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CVE-2021-3578 Sourceforge mbsync 代码问题漏洞
CVE-2021-3773 netfilter 信息泄露漏洞
CVE-2021-3752 Linux kernel 竞争条件问题漏洞
CVE-2022-22853 Sourcecodester Hospital Patient Records Management System 跨站脚本漏洞
CVE-2022-22945 VMware NSX-T 操作系统命令注入漏洞
CVE-2022-23804 KiCad Eda 缓冲区错误漏洞
CVE-2022-23803 KiCad Eda 缓冲区错误漏洞
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CVE-2021-21958 Hancom Office 缓冲区错误漏洞
CVE-2021-39300 Hp Uefi 安全漏洞
CVE-2021-39299 Hp Uefi 安全漏洞

Showing top 20 of 50 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: kernel
Same vendor: n/a
Same weakness: CWE-125