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CVE-2021-47643

17
FAUCET Score

CVE-2021-47643 is a memory leak vulnerability in the Linux kernel's ir_toy media driver, specifically affecting Linux kernel versions. It has a CVSS score of 5.5 (Medium), indicating a local attack vector with low complexity, requiring local privileges, and potentially leading to high availability impact. There is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
>= 5.9, < 5.10.110CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 5.11, < 5.15.33CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 5.16, < 5.16.19CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 5.17, < 5.17.2CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.5MEDIUM

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.24%
Probability of exploitation in next 30 days
EPSS Percentile
15.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0024 is in the 66th percentile among its peer group of 15,940 CVEs.

Social Chatter

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.

Media 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.

Remediation

Vendor Advisories (1)

redhatCVE-2021-47643

kernel: media: ir_toy: free before error exiting

Feb 26, 2025

References

git.kernel.org / stable/c/2011363c196846c083649c91ed30aeef64358d52
Patch
git.kernel.org / stable/c/382e0f6958ef34eb093127b6d74c12f3b8fd0904
Patch
git.kernel.org / stable/c/52cdb013036391d9d87aba5b4fc49cdfc6ea4b23
Patch
git.kernel.org / stable/c/93ef3fdf3b6633c58f049e5a6be755777dde4340
Patch
git.kernel.org / stable/c/99e3f83539cac6884a4df02cb204a57a184ea12b
Patch