CVE•Published 2025-05-01•Modified 2026-10-15•1 article on news•6 live references•NVD data
CVE-2025-37778Linux · Linux_kernel
Vulnerability data via NVD (ingested)
CVSS v3.1
9.8
CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS percentile
66
Exploit Prediction Scoring System · top 34% of all CVEs
Weaknesses (CWE)
Description
In the Linux kernel, the following vulnerability has been resolved: ksmbd: Fix dangling pointer in krb_authenticate krb_authenticate frees sess->user and does not set the pointer to NULL. It calls ksmbd_krb5_authenticate to reinitialise sess->user but that function may return without doing so. If that happens then smb2_sess_setup, which calls krb_authenticate, will be accessing free'd memory when it later uses sess->user.
Timeline
Published 2025-05-01
Modified 2026-10-15
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 tag4 hosts
vuln:CVE-2025-37778Hosts 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-2025-37778Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2025-37778Censys host search filtered to this CVE id.
grep.app
CVE-2025-37778Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2025-37778GitHub code search for direct mentions.
Google dork
"CVE-2025-37778" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.
Known PoCs on GitHub
No public proof-of-concept repositories found for CVE-2025-37778 on GitHub.