Out-of-Bounds Affecting torvalds/linux package, versions [5.5,5.5.7)


Severity

Recommended
0.0
medium
0
10

CVSS assessment made by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
0.16% (39th percentile)

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  • Snyk IDSNYK-UNMANAGED-TORVALDSLINUX-3004999
  • published26 Jan 2022
  • disclosed25 Feb 2020
  • creditUnknown

Introduced: 25 Feb 2020

CVE-2020-9391  (opens in a new tab)
CWE-119  (opens in a new tab)

How to fix?

Upgrade torvalds/linux to version 5.5.7 or higher.

Overview

Affected versions of this package are vulnerable to Out-of-Bounds. An issue was discovered in the Linux kernel 5.4 and 5.5 through 5.5.6 on the AArch64 architecture. It ignores the top byte in the address passed to the brk system call, potentially moving the memory break downwards when the application expects it to move upwards, aka CID-dcde237319e6. This has been observed to cause heap corruption with the GNU C Library malloc implementation.

References

CVSS Base Scores

version 3.1