Out-of-Bounds Affecting kernel package, versions <0:2.6.35.14-107.1.36.amzn1


Severity

Recommended
0.0
medium
0
10

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.04% (6th percentile)

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  • Snyk IDSNYK-AMZN201803-KERNEL-1663611
  • published27 Sept 2021
  • disclosed3 Jul 2012

Introduced: 3 Jul 2012

CVE-2011-4086  (opens in a new tab)
CWE-119  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2018.03 kernel to version 0:2.6.35.14-107.1.36.amzn1 or higher.
This issue was patched in ALAS-2012-45.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel package and not the kernel package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2018.03 relevant fixed versions and status.

The journal_unmap_buffer function in fs/jbd2/transaction.c in the Linux kernel before 3.3.1 does not properly handle the _Delay and _Unwritten buffer head states, which allows local users to cause a denial of service (system crash) by leveraging the presence of an ext4 filesystem that was mounted with a journal.

CVSS Scores

version 3.1