CVE-2021-47428 addresses a bug in the Linux kernel, specifically within the powerpc/64s architecture, related to the emergency stack path for program check interrupts. This flaw caused the system to incorrectly jump within a macro, leading to an improperly formed interrupt frame and potentially garbled bug messages. The vulnerability affects Linux kernel versions and has been resolved by refining the emergency stack path logic. The vulnerability has a CVSS v3.1 score of 5.5 (Medium), indicating a local attack vector with low attack complexity. A successful exploit could lead to high availability impact, meaning a system crash or denial of service, but does not directly compromise confidentiality or integrity. There is currently no evidence of active exploitation, and no public exploit code is available on platforms like Metasploit, Nuclei, or ExploitDB. Community discussion and media coverage for this CVE are minimal, which is typical for a large percentage of reported vulnerabilities.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
>= 5.3, < 5.10.73CPE matchmatch criteria | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | ||
>= 5.11, < 5.14.12CPE matchmatch criteria | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | ||
5.15CPE matchmatch criteria | cpe:2.3:o:linux:linux_kernel:5.15:rc1:*:*:*:*:*:* | ||
5.15CPE matchmatch criteria | cpe:2.3:o:linux:linux_kernel:5.15:rc2:*:*:*:*:*:* | ||
5.15CPE matchmatch criteria | cpe:2.3:o:linux:linux_kernel:5.15:rc3:*:*:*:*:*:* |
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.