CVE-2021-47564 is a double-free vulnerability (CWE-415) in the Marvell Prestera Ethernet switch driver within the Linux kernel, specifically affecting the prestera_bridge_port_join() function's error handling path. This flaw can lead to a system crash due to an Oops, as demonstrated by the provided trace. Rated 7.8 HIGH (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H), it requires local user privileges and low attack complexity to achieve high confidentiality, integrity, and availability impacts. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
>= 5.10, < 5.10.83CPE matchmatch criteria | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | ||
>= 5.11, < 5.15.6CPE matchmatch criteria | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | ||
5.16CPE matchmatch criteria | cpe:2.3:o:linux:linux_kernel:5.16:rc1:*:*:*:*:*:* | ||
5.16CPE matchmatch criteria | cpe:2.3:o:linux:linux_kernel:5.16:rc2:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.