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Vulnerability · Published May 17, 2021 · Assigned by redhat

CVE-2021-3483

High 7.8

In plain English

A high-severity use-after-free in kernel from Linux. 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 30% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS NVD)7.8High
Exploit odds (30 days)0.4%top 69.6% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known

Official description

A flaw was found in the Nosy driver in the Linux kernel. This issue allows a device to be inserted twice into a doubly-linked list, leading to a use-after-free when one of these devices is removed. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability. Versions before kernel 5.12-rc6 are affected

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linux5.10.28-1DEBIAN-CVE-2021-3483
Debian:13linux5.10.28-1DEBIAN-CVE-2021-3483
Debian:14linux5.10.28-1DEBIAN-CVE-2021-3483
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2021-3483
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2021-3483
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2021-3483

Affected products (as reported)

VendorProductVersions
Linux kernel 0 – before 4.4.2654.5 – before 4.9.2654.10 – before 4.14.2294.15 – before 4.19.1854.20 – before 5.4.1105.5 – before 5.10.285.11 – before 5.11.12

Weakness: CWE-416

References