CVE-2021-47435 describes a NULL pointer dereference vulnerability in the Linux kernel's device mapper (dm) component. This flaw occurs due to a race condition during I/O completion and DM table swapping, potentially leading to a kernel crash. The vulnerability affects Linux kernel versions and has a CVSS score of 4.7 (Medium). The vulnerability has a local attack vector and high attack complexity, with the primary impact being a denial of service (system crash). There is no confidentiality or integrity impact. The EPSS score is very low, indicating a minimal likelihood of exploitation. Currently, there is no evidence of active exploitation, and no public exploit code (Metasploit, Nuclei, ExploitDB) is available. Community discussion and media coverage for this CVE are also absent, suggesting a low level of public awareness or concern.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 4.9.313CPE matchmatch criteria | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | ||
>= 4.10, < 4.14.278CPE matchmatch criteria | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | ||
>= 4.15, < 4.19.242CPE matchmatch criteria | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | ||
>= 4.20, < 5.4.193CPE matchmatch criteria | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | ||
>= 5.5, < 5.10.113CPE matchmatch criteria | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.4 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.