CVE•Published 2026-07-19•Modified 2026-08-13•1 article on news•6 live references•NVD data
CVE-2026-64136Linux · 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
40
Exploit Prediction Scoring System · top 60% of all CVEs
Description
In the Linux kernel, the following vulnerability has been resolved: smb: client: protect tc_count increment in smb2_find_smb_sess_tcon_unlocked() Commit 96c4af418586 ("cifs: Fix locking usage for tcon fields") refactored cifs code to change cifs_tcp_ses_lock for tc_lock around tc_count changes. There was missing lock around tc_count increment inside smb2_find_smb_sess_tcon_unlocked().
Timeline
Published 2026-07-19
Modified 2026-08-13
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-2026-64136Hosts 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-2026-64136Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2026-64136Censys host search filtered to this CVE id.
grep.app
CVE-2026-64136Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2026-64136GitHub code search for direct mentions.
Google dork
"CVE-2026-64136" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.
Known PoCs on GitHub
No public proof-of-concept repositories found for CVE-2026-64136 on GitHub.