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I. Basic Information for CVE-2021-33656
Vulnerability Information
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Vulnerability Title
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Description
When setting font with malicous data by ioctl cmd PIO_FONT,kernel will write memory out of bounds.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
跨界内存写
Source: NVD (National Vulnerability Database)
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 openEuler-22.03-LTS存在安全漏洞，该漏洞源于通过ioctl cmd PIO_FONT设置带有恶意数据的字体时，内核会越界写入内存。
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
VendorProductAffected VersionsCPESubscribe
-openEuler:kernel <5.10.127 -
II. Public POCs for CVE-2021-33656
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III. Intelligence Information for CVE-2021-33656
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New Vulnerabilities
Vendor: n/a
Same weakness: CWE-787
V. Comments for CVE-2021-33656

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