CVE-2021-3669 is a medium-severity flaw in the Linux kernel, affecting distributions like Debian, Fedora, IBM, and Red Hat. The vulnerability stems from inefficient measurement of shared memory usage, which can lead to resource exhaustion and a denial-of-service (DoS) condition when dealing with numerous shared memory segments. An attacker with local access (AV:L, PR:L) could exploit this with low complexity (AC:L) to achieve high availability impact (A:H). There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
All Versions ImpactedCPE matchmatch criteria | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | ||
>= 2.2.0.0, <= 2.2.15.0CPE matchmatch criteria | cpe:2.3:a:ibm:spectrum_copy_data_management:*:*:*:*:*:*:*:* | ||
>= 10.1.0, <= 10.1.10.2CPE matchmatch criteria | cpe:2.3:a:ibm:spectrum_protect_plus:*:*:*:*:*:*:*:* | ||
10.0CPE matchmatch criteria | cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* | ||
11.0CPE matchmatch criteria | cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
A flaw was found in the Linux kernel. Measuring usage of the shared memory does not scale with large shared memory segment counts which could lead to resource exhaustion and DoS.
Aug 9, 2022kernel: reading /proc/sysvipc/shm does not scale with large shared memory segment counts
Aug 2, 2021