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Vulnerability · Published May 26, 2021 · Assigned by redhat

CVE-2020-25671

High 7.8

In plain English

A high-severity use-after-free in Linux Kernel. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 44% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS NVD)7.8High
Exploit odds (30 days)0.5%top 56.2% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known

Official description

A vulnerability was found in Linux Kernel, where a refcount leak in llcp_sock_connect() causing use-after-free which might lead to privilege escalations.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linux5.10.38-1DEBIAN-CVE-2020-25671
Debian:13linux5.10.38-1DEBIAN-CVE-2020-25671
Debian:14linux5.10.38-1DEBIAN-CVE-2020-25671
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2020-25671
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2020-25671
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2020-25671

Affected products (as reported)

VendorProductVersions
n/a Linux Kernel All

Weakness: CWE-416

References