CVE•Published 2024-02-21•Modified 2026-08-04•1 article on news•5 live references•NVD data
CVE-2023-52440Linux · 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
98
Exploit Prediction Scoring System · top 2% of all CVEs
Description
In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix slub overflow in ksmbd_decode_ntlmssp_auth_blob() If authblob->SessionKey.Length is bigger than session key size(CIFS_KEY_SIZE), slub overflow can happen in key exchange codes. cifs_arc4_crypt copy to session key array from SessionKey from client.
Timeline
Published 2024-02-21
Modified 2026-08-04
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-2023-52440Hosts 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-2023-52440Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2023-52440Censys host search filtered to this CVE id.
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CVE-2023-52440Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2023-52440GitHub code search for direct mentions.
Google dork
"CVE-2023-52440" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.