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CVE-2020-27194

Good to know:

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Date: October 16, 2020

An issue was discovered in the Linux kernel before 5.8.15. scalar32_min_max_or in kernel/bpf/verifier.c mishandles bounds tracking during use of 64-bit values, aka CID-5b9fbeb75b6a.

Language: C

Severity Score

Related Resources (7)

https://people.canonical.com/~ubuntu-security/cve/CVE-2020-27194
https://hackerone.com/reports/1010340
https://security-tracker.debian.org/tracker/CVE-2020-27194
https://nvd.nist.gov/vuln/detail/CVE-2020-27194
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.8.15
https://github.com/torvalds/linux/commit/5b9fbeb75b6a98955f628e205ac26689bcb1383e
https://www.mend.io/vulnerability-database/CVE-2020-27194

Severity Score

Weakness Type (CWE)

Improper Restriction of Operations within the Bounds of a Memory Buffer

CWE-119

Incorrect Conversion between Numeric Types

CWE-681

Top Fix

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Upgrade Version

Upgrade to version linux-libc-headers - 5.10;linux-yocto - 4.8.26+gitAUTOINC+1c60e003c7_27efc3ba68;linux-yocto - 4.10+gitAUTOINC+805ea440c7_b259a5d744

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CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): LOW
Privileges Required (PR): LOW
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): LOCAL
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): PARTIAL
Additional information:

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