Integer Overflow or Wraparound Affecting kernel-preempt-extra package, versions <5.3.18-59.5.2


Severity

Recommended
0.0
high
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.04% (6th percentile)

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  • Snyk IDSNYK-SLES153-KERNELPREEMPTEXTRA-2680786
  • published14 Apr 2022
  • disclosed15 Jun 2021

Introduced: 15 Jun 2021

CVE-2021-20268  (opens in a new tab)
CWE-190  (opens in a new tab)

How to fix?

Upgrade SLES:15.3 kernel-preempt-extra to version 5.3.18-59.5.2 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-preempt-extra package and not the kernel-preempt-extra package as distributed by SLES. See How to fix? for SLES:15.3 relevant fixed versions and status.

An out-of-bounds access flaw was found in the Linux kernel's implementation of the eBPF code verifier in the way a user running the eBPF script calls dev_map_init_map or sock_map_alloc. This flaw allows a local user to crash the system or possibly escalate their privileges. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.

CVSS Base Scores

version 3.1