Integer Underflow Affecting torvalds/linux package, versions [0,]


Severity

Recommended
0.0
high
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-3005025
  • published26 Jan 2022
  • disclosed24 Apr 2020
  • creditUnknown

Introduced: 24 Apr 2020

CVE-2019-15791  (opens in a new tab)
CWE-191  (opens in a new tab)

How to fix?

There is no fixed version for torvalds/linux.

Overview

Affected versions of this package are vulnerable to Integer Underflow. In shiftfs, a non-upstream patch to the Linux kernel included in the Ubuntu 5.0 and 5.3 kernel series, shiftfs_btrfs_ioctl_fd_replace() installs an fd referencing a file from the lower filesystem without taking an additional reference to that file. After the btrfs ioctl completes this fd is closed, which then puts a reference to that file, leading to a refcount underflow.

CVSS Base Scores

version 3.1