CVE-2021-22600— Double Free in net/packet/af_packet.c leading to priviledge escalation
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I. Basic Information for CVE-2021-22600
Vulnerability Information
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Vulnerability Title
Double Free in net/packet/af_packet.c leading to priviledge escalation
Source: NVD (National Vulnerability Database)
Vulnerability Description
A double free bug in packet_set_ring() in net/packet/af_packet.c can be exploited by a local user through crafted syscalls to escalate privileges or deny service. We recommend upgrading kernel past the effected versions or rebuilding past ec6af094ea28f0f2dda1a6a33b14cd57e36a9755
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
双重释放
Source: NVD (National Vulnerability Database)
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 存在资源管理错误漏洞，该漏洞源于 net/packet/af_packet.c 中的 packet_set_ring() 中的双重释放错误可以被本地用户通过精心设计的系统调用利用来提升权限或拒绝服务。
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)
Shenlong Deep Dive — AI Deep Analysis
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Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Linux Kernel | Kernel | unspecified ~ 5.4.168 | - |
II. Public POCs for CVE-2021-22600
| # | POC Description | Source Link | Shenlong Link |
|---|---|---|---|
| 1 | kernal exploit 22600 | https://github.com/34rthq04k3/CVE-2021-22600 | POC Details |
| 2 | kernal exploit 22600 | https://github.com/ragingkarson/CVE-2021-22600 | POC Details |
| 3 | None | https://github.com/sendINUX/CVE-2021-22600__DirtyPagetable | POC Details |
| 4 | Proof-Of-Concept to check privileges of af_packet.c for validating the privileges acquired by any hacker upon successful exploitation of CVE-2021-22600 | https://github.com/Chinmay1743/af_packet.c | POC Details |
AI-Generated POCPremium
No public POC found.
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- https://www.debian.org/security/2022/dsa-5096vendor-advisory
- https://nvd.nist.gov/vuln/detail/CVE-2021-22600
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V. Comments for CVE-2021-22600
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