Denial of Service (DoS) Affecting torvalds/linux package, versions [2.6.0,2.6.23)


Severity

Recommended
0.0
medium
0
10

CVSS assessment by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
0.38% (30th percentile)

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  • Snyk IDSNYK-UNMANAGED-TORVALDSLINUX-3004941
  • published26 Jan 2022
  • disclosed7 Nov 2019
  • creditUnknown

Introduced: 7 Nov 2019

CVE-2007-3732  (opens in a new tab)
CWE-400  (opens in a new tab)

How to fix?

Upgrade torvalds/linux to version 2.6.23 or higher.

Overview

Affected versions of this package are vulnerable to Denial of Service (DoS). In Linux 2.6 before 2.6.23, the TRACE_IRQS_ON function in iret_exc calls a C function without ensuring that the segments are set properly. The kernel's %fs needs to be restored before the call in TRACE_IRQS_ON and before enabling interrupts, so that "current" references work. Without this, "current" used in the window between iret_exc and the middle of error_code where %fs is reset, would crash.

CVSS Base Scores

version 3.1