CVE•Published 2025-04-01•Modified 2026-07-30•1 article on news•5 live references•NVD data
CVE-2025-21946Linux · Linux_kernel
Vulnerability data via NVD (ingested)
CVSS v3.1
8.8
HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS percentile
9
Exploit Prediction Scoring System · top 91% of all CVEs
Weaknesses (CWE)
Description
In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix out-of-bounds in parse_sec_desc() If osidoffset, gsidoffset and dacloffset could be greater than smb_ntsd struct size. If it is smaller, It could cause slab-out-of-bounds. And when validating sid, It need to check it included subauth array size.
Timeline
Published 2025-04-01
Modified 2026-07-30
External references
Search for exposed instances
Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).
Shodan · vuln tag0 hosts
vuln:CVE-2025-21946Hosts Shodan has explicitly fingerprinted as vulnerable.
Shodan · OS
os:"Linux Kernel"Hosts Shodan identified as running Linux Kernel.
More intel sources (5)
Shodan report
vuln:CVE-2025-21946Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2025-21946Censys host search filtered to this CVE id.
grep.app
CVE-2025-21946Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2025-21946GitHub code search for direct mentions.
Google dork
"CVE-2025-21946" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.
Known PoCs on GitHub
No public proof-of-concept repositories found for CVE-2025-21946 on GitHub.