Incorrect Calculation of Buffer Size Affecting kernel-livepatch-4.14.262-200.489 package, versions <0:1.0-0.amzn2


Severity

Recommended
high

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.04% (6th percentile)

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  • Snyk IDSNYK-AMZN2-KERNELLIVEPATCH414262200489-2395686
  • published8 Feb 2022
  • disclosed24 Aug 2022

Introduced: 8 Feb 2022

CVE-2021-4155  (opens in a new tab)
CWE-131  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2 kernel-livepatch-4.14.262-200.489 to version 0:1.0-0.amzn2 or higher.
This issue was patched in ALAS2-2022-1749.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-livepatch-4.14.262-200.489 package and not the kernel-livepatch-4.14.262-200.489 package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2 relevant fixed versions and status.

A data leak flaw was found in the way XFS_IOC_ALLOCSP IOCTL in the XFS filesystem allowed for size increase of files with unaligned size. A local attacker could use this flaw to leak data on the XFS filesystem otherwise not accessible to them.

CVSS Scores

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