Loop with Unreachable Exit Condition ('Infinite Loop') Affecting kernel-syms package, versions <4.12.14-197.61.1


Severity

Recommended
0.0
medium
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.04% (6th percentile)

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  • Snyk IDSNYK-SLES151-KERNELSYMS-2701125
  • published14 Apr 2022
  • disclosed13 Oct 2020

Introduced: 13 Oct 2020

CVE-2020-25641  (opens in a new tab)
CWE-835  (opens in a new tab)

How to fix?

Upgrade SLES:15.1 kernel-syms to version 4.12.14-197.61.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-syms package and not the kernel-syms package as distributed by SLES. See How to fix? for SLES:15.1 relevant fixed versions and status.

A flaw was found in the Linux kernel's implementation of biovecs in versions before 5.9-rc7. A zero-length biovec request issued by the block subsystem could cause the kernel to enter an infinite loop, causing a denial of service. This flaw allows a local attacker with basic privileges to issue requests to a block device, resulting in a denial of service. The highest threat from this vulnerability is to system availability.

CVSS Scores

version 3.1