CVE-2018-6555
Quick assessment
Affected
Linux Kernel Linux 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基金会发布的开源操作系统Linux所使用的内核。 Linux kernel 4.17之前版本中的net/irda/af_irda.c文件和drivers/staging/irda/net/af_irda.c文件的‘irda_setsockopt’函数存在安全漏洞。本地攻击者可借助AF_IRDA套接字利用该漏洞造成拒绝服务（ias_object释放后重用和系统崩溃）。
Possible ATT&CK Techniques 1 AI
T1480 · Execution Guardrails
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I. Basic Information for CVE-2018-6555
Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
The irda_setsockopt function in net/irda/af_irda.c and later in drivers/staging/irda/net/af_irda.c in the Linux kernel before 4.17 allows local users to cause a denial of service (ias_object use-after-free and system crash) or possibly have unspecified other impact via an AF_IRDA socket.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
释放后使用
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会发布的开源操作系统Linux所使用的内核。 Linux kernel 4.17之前版本中的net/irda/af_irda.c文件和drivers/staging/irda/net/af_irda.c文件的‘irda_setsockopt’函数存在安全漏洞。本地攻击者可借助AF_IRDA套接字利用该漏洞造成拒绝服务（ias_object释放后重用和系统崩溃）。
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 |
|---|---|---|---|---|
| Linux Kernel | Linux Kernel | before 4.17 | - |
|
II. Public POCs for CVE-2018-6555
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2018-6555 (9)
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🔗 USN-3775-1: Linux kernel vulnerabilities | Ubuntu security notices | Ubuntu Read full article vendor-advisory x_refsource_UBUNTU
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🔗 USN-3775-2: Linux kernel (Trusty HWE) vulnerabilities | Ubuntu security notices | Ubuntu Read full article vendor-advisory x_refsource_UBUNTU
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Mailing List Discussions for CVE-2018-6555 (1)
Other References for CVE-2018-6555 (1)
IV. Related Vulnerabilities
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CVE-2021-22600
Double Free in net/packet/af_packet.c leading to priviledge -
CVE-2021-22543
Improper memory handling in Linux KVM
Same weakness: CWE-416
V. Comments for CVE-2018-6555
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