Race Condition Affecting torvalds/linux package, versions [,4.3.4)


Severity

Recommended
0.0
medium
0
10

CVSS assessment by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
0.41% (33rd percentile)

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  • Snyk IDSNYK-UNMANAGED-TORVALDSLINUX-3004790
  • published26 Jan 2022
  • disclosed8 Feb 2016
  • creditUnknown

Introduced: 8 Feb 2016

CVE-2015-7550  (opens in a new tab)
CWE-362  (opens in a new tab)

How to fix?

Upgrade torvalds/linux to version 4.3.4 or higher.

Overview

Affected versions of this package are vulnerable to Race Condition. The keyctl_read_key function in security/keys/keyctl.c in the Linux kernel before 4.3.4 does not properly use a semaphore, which allows local users to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact via a crafted application that leverages a race condition between keyctl_revoke and keyctl_read calls.

CVSS Base Scores

version 3.1