CVE-2025-40221: media: pci: mg4b: fix uninitialized iio scan data
Vulnerability summary
CVE-2025-40221 is a vulnerability in linux with no CVSS score yet. EPSS estimates a 0.18% chance of exploitation in the next 30 days, higher than 8% of scored vulnerabilities.
No CVSS vector published; no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 20 · Related 20Timeline
- 04-12-2025PublishedVulnerability first disclosed.
- 11-05-2026Last modifiedVulnerability information updated.
Description
In the Linux kernel, the following vulnerability has been resolved: media: pci: mg4b: fix uninitialized iio scan data Fix potential leak of uninitialized stack data to userspace by ensuring that the `scan` structure is zeroed before use.
CVSS metrics
Risk metrics not yet published.
EPSS trend
Probability
0.18%
Chance of exploitation in the next 30 days
Percentile
8%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.18% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeNo weakness data has been published for this record.
Affected systems
Known conditions: not stated in public data.
Ubuntu127 products
- linux< 6.8.0-106.106 | < 6.17.0-14.14
- linux-allwinner-5.19All versions (No fix recorded)
- linux-aws< 6.8.0-1050.53 | < 6.17.0-1007.7
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
Debian1 product
- linux< 6.12.57-1 | < 6.17.6-1
Linux1 product
- linux≥ 0ab13674a9bd10514486cf1670d71dbd8afec421, < b7f82da7f86479cb6479a76ebe213ece7c77398f | ≥ 0ab13674a9bd10514486cf1670d71dbd8afec421, < b792eba44494b4e6ab5006013335f9819f303b8b | ≥ 0ab13674a9bd10514486cf1670d71dbd8afec421, < c0d3f6969bb4d72476cfe7ea9263831f1c283704 | 6.7
3 vendors · 129 products
