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Vulnerability · Published Aug 8, 2021 · Assigned by mitre

CVE-2021-38199

Medium 6.5

In plain English

A medium-severity security flaw in the linux package (Debian). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.2% (higher than 69% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS NVD)6.5Medium
Exploit odds (30 days)1.2%top 30.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

fs/nfs/nfs4client.c in the Linux kernel before 5.13.4 has incorrect connection-setup ordering, which allows operators of remote NFSv4 servers to cause a denial of service (hanging of mounts) by arranging for those servers to be unreachable during trunking detection.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linux5.14.6-1DEBIAN-CVE-2021-38199
Debian:13linux5.14.6-1DEBIAN-CVE-2021-38199
Debian:14linux5.14.6-1DEBIAN-CVE-2021-38199
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2021-38199
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2021-38199
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2021-38199

Affected products (as reported)

VendorProductVersions
n/a n/a n/a

References