CVE-2021-38199 — Improper Initialization in Kernel

CWE-665 — Improper Initialization25 documents7 sources
Severity
6.5MEDIUMNVD
OSV7.8OSV5.5OSV4.7
EPSS
0.3%
top 43.59%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
5
Linux KernelDebian LinuxDebian Linux+2 more
Timeline
PublishedAug 8
Latest updateMay 24

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.

CVSS vector

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HExploitability: 2.8 | Impact: 3.6

Affected Packages6 packages

▶NVDlinux/linux_kernel< 5.13.4
▶Debianlinux/linux_kernel< 5.10.46-5+3
▶Ubuntulinux/linux_kernel< 4.15.0-162.170+1
▶debiandebian/linux< linux 5.14.6-1 (bookworm)

Also affects: Debian Linux 11.0, 9.0

Patches

Patch: cdn.kernel.org ↗Patch: github.com ↗Patch: cdn.kernel.org ↗

🔴Vulnerability Details

12
GHSA
GHSA-2crj-6275-fwfr: fs/nfs/nfs4client↗2022-05-24
▶
OSV
linux, linux-aws, linux-aws-hwe, linux-azure, linux-azure-4.15, linux-dell300x, linux-gcp, linux-gcp-4.15, linux-hwe, linux-kvm, linux-oracle, linux-raspi2, linux-snapdragon vulnerabilities↗2021-11-09
▶
OSV
linux-azure-5.8 vulnerabilities↗2021-10-21
▶
OSV
linux-azure, linux-azure-5.11 regression↗2021-10-18
▶
OSV
linux-azure, linux-azure-5.4 regression↗2021-10-15
▶

📋Vendor Advisories

12
Ubuntu
Linux kernel vulnerabilities↗2021-11-09
▶
Ubuntu
Linux kernel (Azure) vulnerabilities↗2021-10-21
▶
Ubuntu
Linux kernel (Azure) regression↗2021-10-18
▶
Ubuntu
Linux kernel (Azure) regression↗2021-10-15
▶
Ubuntu
Linux kernel (OEM) vulnerabilities↗2021-10-06
▶
CVE-2021-38199 — Improper Initialization in Kernel | cvebase