Integer Overflow or Wraparound Affecting kernel-debuginfo package, versions <0:4.14.296-222.539.amzn2


Severity

Recommended
high

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.01% (1st percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications

Snyk Learn

Learn about Integer Overflow or Wraparound vulnerabilities in an interactive lesson.

Start learning
  • Snyk IDSNYK-AMZN2-KERNELDEBUGINFO-3110385
  • published9 Nov 2022
  • disclosed5 Sept 2022

Introduced: 5 Sep 2022

CVE-2022-39842  (opens in a new tab)
CWE-190  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2 kernel-debuginfo to version 0:4.14.296-222.539.amzn2 or higher.
This issue was patched in ALAS2-2022-1876.

NVD Description

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

An issue was discovered in the Linux kernel before 5.19. In pxa3xx_gcu_write in drivers/video/fbdev/pxa3xx-gcu.c, the count parameter has a type conflict of size_t versus int, causing an integer overflow and bypassing the size check. After that, because it is used as the third argument to copy_from_user(), a heap overflow may occur. NOTE: the original discoverer disputes that the overflow can actually happen.

CVSS Base Scores

version 3.1