Race Condition Affecting torvalds/linux package, versions [,6.5-rc6)


Severity

Recommended
0.0
medium
0
10

CVSS assessment by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
0.16% (6th percentile)

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  • Snyk IDSNYK-UNMANAGED-TORVALDSLINUX-5903069
  • published15 Sept 2023
  • disclosed13 Sept 2023
  • creditUnknown

Introduced: 13 Sep 2023

CVE-2023-4155  (opens in a new tab)
CWE-362  (opens in a new tab)

How to fix?

Upgrade torvalds/linux to version 6.5-rc6 or higher.

Overview

Affected versions of this package are vulnerable to Race Condition via the Secure Encrypted Virtualisation function. An attacker can trigger a stack overflow and cause a denial of service or potentially guest-to-host escape by exploiting a double fetch race condition vulnerability.

Note: This is only exploitable if the kernel configurations are without stack guard pages (CONFIG_VMAP_STACK).

CVSS Base Scores

version 3.1