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Vulnerability · Published Oct 6, 2020 · Assigned by redhat

CVE-2020-25641

Medium 5.5

In plain English

A medium-severity infinite loop in kernel. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 33% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS NVD)5.5Medium
Exploit odds (30 days)0.4%top 67.2% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known

Official description

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.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
AlmaLinux:8kernel-tools-libs-devel4.18.0-240.el8ALSA-2020:4431
Debian:12linux5.8.10-1DEBIAN-CVE-2020-25641
Debian:13linux5.8.10-1DEBIAN-CVE-2020-25641
Debian:14linux5.8.10-1DEBIAN-CVE-2020-25641
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2020-25641
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2020-25641
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2020-25641

Affected products (as reported)

VendorProductVersions
n/a kernel kernel versions before 5.9-rc7

Weakness: CWE-835

References