Use After Free Affecting torvalds/linux package, versions [5.11,5.12.9)


Severity

Recommended
0.0
high
0
10

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

Threat Intelligence

EPSS
0.11% (31st percentile)

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  • Snyk IDSNYK-UNMANAGED-TORVALDSLINUX-3005980
  • published26 Jan 2022
  • disclosed11 May 2021
  • creditUnknown

Introduced: 11 May 2021

CVE-2021-32606  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade torvalds/linux to version 5.12.9 or higher.

Overview

Affected versions of this package are vulnerable to Use After Free. In the Linux kernel 5.11 through 5.12.2, isotp_setsockopt in net/can/isotp.c allows privilege escalation to root by leveraging a use-after-free. (This does not affect earlier versions that lack CAN ISOTP SF_BROADCAST support.)

CVSS Base Scores

version 3.1