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CVE-2021-26930

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 3.11 through 5.10.16 存在安全漏洞，该漏洞源于内部状态更新不足，从而阻止了错误的安全恢复。

AI Predicted 7.8 Difficulty: Moderate EPSS 0.35% · P27

Possible ATT&CK Techniques 1 AI

T1211 · Exploitation for Stealth
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I. Basic Information for CVE-2021-26930

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 3.11 through 5.10.16, as used by Xen. To service requests to the PV backend, the driver maps grant references provided by the frontend. In this process, errors may be encountered. In one case, an error encountered earlier might be discarded by later processing, resulting in the caller assuming successful mapping, and hence subsequent operations trying to access space that wasn't mapped. In another case, internal state would be insufficiently updated, preventing safe recovery from the error. This affects drivers/block/xen-blkback/blkback.c.
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 3.11 through 5.10.16 存在安全漏洞，该漏洞源于内部状态更新不足，从而阻止了错误的安全恢复。
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-2021-26930

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III. Intelligence Information for CVE-2021-26930

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Patches & Fixes for CVE-2021-26930 (1)

Vendor Advisories for CVE-2021-26930 (1)

Mailing List Discussions for CVE-2021-26930 (4)

Other References for CVE-2021-26930 (1)

Same Patch Batch · n/a · 2021-02-17 · 87 CVEs total

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CVE-2020-12368 Intel Graphics Drivers 输入验证错误漏洞
CVE-2020-12369 Intel Graphics Drivers 缓冲区错误漏洞
CVE-2020-8678 Intel Graphics Drivers 安全漏洞
CVE-2020-24452 SGX Platform Software 输入验证错误漏洞
CVE-2020-24453 Intel EPID SDK 输入验证错误漏洞
CVE-2020-24458 Intel PROSet Wireless 信息泄露漏洞
CVE-2020-24480 Intel XTU 安全漏洞
CVE-2020-24481 Intel Quartus Prime Pro安全漏洞
CVE-2020-24482 Intel 7360 Cell Modem 缓冲区错误漏洞
CVE-2020-24491 Intel 10th Generation Intel Core Processor 信息泄露漏洞
CVE-2020-24500 Intel Ethernet Controllers 缓冲区错误漏洞
CVE-2020-24505 Intel Ethernet Controllers 输入验证错误漏洞

Showing top 20 of 87 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

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Same vendor: n/a

V. Comments for CVE-2021-26930

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