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I. Basic Information for CVE-2021-47123
Vulnerability Information

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Vulnerability Title
io_uring: fix ltout double free on completion race
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: io_uring: fix ltout double free on completion race Always remove linked timeout on io_link_timeout_fn() from the master request link list, otherwise we may get use-after-free when first io_link_timeout_fn() puts linked timeout in the fail path, and then will be found and put on master's free.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Linux kernel 安全漏洞
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 存在安全漏洞,该漏洞源于 io_uring 模块的 ltout 存在双重释放问题。
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
LinuxLinux 90cd7e424969d29aff653333b4dcb4e2e199d791 ~ 1f64f5e903b9d1d157875721e02adadc9d6f0a5d -
LinuxLinux 5.11 -
II. Public POCs for CVE-2021-47123
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III. Intelligence Information for CVE-2021-47123
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IV. Related Vulnerabilities
V. Comments for CVE-2021-47123

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