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I. Basic Information for CVE-2021-47520
Vulnerability Information

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Vulnerability Title
can: pch_can: pch_can_rx_normal: fix use after free
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: can: pch_can: pch_can_rx_normal: fix use after free After calling netif_receive_skb(skb), dereferencing skb is unsafe. Especially, the can_frame cf which aliases skb memory is dereferenced just after the call netif_receive_skb(skb). Reordering the lines solves the issue.
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 can:pch_can:pch_can_rx_normal 模块释放后重用。
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 b21d18b51b31a24d17f883b678432fbdee3d5675 ~ bafe343a885c70dddf358379cf0b2a1c07355d8d -
LinuxLinux 2.6.37 -
II. Public POCs for CVE-2021-47520
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III. Intelligence Information for CVE-2021-47520
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IV. Related Vulnerabilities
V. Comments for CVE-2021-47520

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