CVE-2021-3759
MEDIUMLinux Kernel - Denial of Service via Semaphore Resource Starvation in IPC
Title source: llmDescription
A memory overflow vulnerability was found in the Linux kernel’s ipc functionality of the memcg subsystem, in the way a user calls the semget function multiple times, creating semaphores. This flaw allows a local user to starve the resources, causing a denial of service. The highest threat from this vulnerability is to system availability.
References (4)
Core 4
Core References
Mailing List, Third Party Advisory mailing-list
https://lists.debian.org/debian-lts-announce/2022/12/msg00031.html
Third Party Advisory
https://access.redhat.com/security/cve/CVE-2021-3759
Issue Tracking, Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1999675
Scores
CVSS v3
5.5
EPSS
0.0034
EPSS Percentile
26.3%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Details
CWE
CWE-400
CWE-770
Status
published
Products (2)
debian/debian_linux
10.0
linux/linux_kernel
Published
Aug 23, 2022
Tracked Since
Feb 18, 2026