CVE-2021-3679 — Uncontrolled Resource Consumption in Kernel

CWE-400 — Uncontrolled Resource ConsumptionCWE-835 — Infinite Loop30 documents8 sources
Severity
5.5MEDIUMNVD
OSV8.7OSV7.8OSV6.5OSV5.4OSV4.7
EPSS
1.4%
top 19.52%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
7
Linux KernelDebian LinuxDebian Linux+4 more
Timeline
PublishedAug 5
Latest updateFeb 14

Description

A lack of CPU resource in the Linux kernel tracing module functionality in versions prior to 5.14-rc3 was found in the way user uses trace ring buffer in a specific way. Only privileged local users (with CAP_SYS_ADMIN capability) could use this flaw to starve the resources causing denial of service.

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HExploitability: 1.8 | Impact: 3.6

Affected Packages8 packages

▶NVDlinux/linux_kernel< 5.14+1
▶Debianlinux/linux_kernel< 5.10.46-5+3
▶Ubuntulinux/linux_kernel< 4.15.0-159.167+3
▶CVEListV5linux/linux_kernelkernel 5.14-rc3
▶debiandebian/linux< linux 5.14.6-1 (bookworm)

Also affects: Debian Linux 10.0, 9.0, Enterprise Linux 8.0

Patches

Patch: bugzilla.redhat.com ↗Patch: git.kernel.org ↗Patch: bugzilla.redhat.com ↗

🔴Vulnerability Details

14
GHSA
GHSA-mfgx-frfq-59jc: A lack of CPU resource in the Linux kernel tracing module functionality in versions prior to 5↗2022-05-24
▶
OSV
linux, linux-aws, linux-kvm, linux-lts-xenial vulnerabilities↗2022-03-22
▶
OSV
linux, linux-aws, linux-kvm, linux-lts-xenial vulnerabilities↗2022-02-22
▶
OSV
linux-oem-5.10 vulnerabilities↗2021-10-20
▶
OSV
linux-azure, linux-azure-5.11 regression↗2021-10-18
▶

📋Vendor Advisories

15
Palo Alto
PAN-SA-2024-0001 Informational Bulletin: Impact of OSS CVEs in PAN-OS↗2024-02-14
▶
Ubuntu
Linux kernel vulnerabilities↗2022-03-22
▶
Ubuntu
Linux kernel vulnerabilities↗2022-02-22
▶
Ubuntu
Linux kernel (OEM) vulnerabilities↗2021-10-20
▶
Ubuntu
Linux kernel (Azure) regression↗2021-10-18
▶
CVE-2021-3679 — Uncontrolled Resource Consumption | cvebase