CVE•Published 2026-06-26•Modified 2026-07-06•1 article on news•6 live references•NVD data
CVE-2026-53309Linux · 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
32
Exploit Prediction Scoring System · top 68% of all CVEs
Weaknesses (CWE)
Description
In the Linux kernel, the following vulnerability has been resolved: ocfs2/dlm: fix off-by-one in dlm_match_regions() region comparison The local-vs-remote region comparison loop uses '<=' instead of '<', causing it to read one entry past the valid range of qr_regions. The other loops in the same function correctly use '<'. Fix the loop condition to use '<' for consistency and correctness.
Timeline
Published 2026-06-26
Modified 2026-07-06
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-2026-53309Hosts 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-2026-53309Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2026-53309Censys host search filtered to this CVE id.
grep.app
CVE-2026-53309Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2026-53309GitHub code search for direct mentions.
Google dork
"CVE-2026-53309" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.
Known PoCs on GitHub
No public proof-of-concept repositories found for CVE-2026-53309 on GitHub.