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CVE-2021-27363

Quick assessment

Affected
n/a n/a
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基金会的开源操作系统Linux所使用的内核。 Linux kernel 5.11.3 版本及之前版本存在安全漏洞，该漏洞源于内核指针泄漏可以用来确定iscsi传输结构的地址。

AI Predicted 5.5 Difficulty: Moderate EPSS 0.71% · P52

Possible ATT&CK Techniques 1 AI

T1005 · Data from Local System
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I. Basic Information for CVE-2021-27363

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
An issue was discovered in the Linux kernel through 5.11.3. A kernel pointer leak can be used to determine the address of the iscsi_transport structure. When an iSCSI transport is registered with the iSCSI subsystem, the transport's handle is available to unprivileged users via the sysfs file system, at /sys/class/iscsi_transport/$TRANSPORT_NAME/handle. When read, the show_transport_handle function (in drivers/scsi/scsi_transport_iscsi.c) is called, which leaks the handle. This handle is actually the pointer to an iscsi_transport struct in the kernel module's global variables.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
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基金会的开源操作系统Linux所使用的内核。 Linux kernel 5.11.3 版本及之前版本存在安全漏洞，该漏洞源于内核指针泄漏可以用来确定iscsi传输结构的地址。
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
- n/a n/a -

II. Public POCs for CVE-2021-27363

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III. Intelligence Information for CVE-2021-27363

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Patches & Fixes for CVE-2021-27363 (1)

Vendor Advisories for CVE-2021-27363 (2)

Mailing List Discussions for CVE-2021-27363 (3)

Security Blog Posts for CVE-2021-27363 (1)

Same Patch Batch · n/a · 2021-03-07 · 6 CVEs total

CVE-2020-28466 7.5 HIGH Denial of Service (DoS)
CVE-2009-20001 MantisBT 代码问题漏洞
CVE-2021-27365 Linux kernel 缓冲区错误漏洞
CVE-2021-27364 Linux kernel 缓冲区错误漏洞
CVE-2021-26294 Aurora 路径遍历漏洞

IV. Related Vulnerabilities

Same product: n/a
Same vendor: n/a

V. Comments for CVE-2021-27363

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