CVE-2023-52440

HighCVSS 7.8/10Last modified Aug 15, 2026

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.

Metrics

CVSS 3.1 7.8/10CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-119

Affected software

VendorProductVersions
LinuxLinux>= c5049d2d73b2dc8e6bb64be633250bad1ae3d9ef, < bd554ed4fdc3d38404a1c43d428432577573e809; >= f9929ef6a2a55f03aac61248c6a3a987b8546f2a, < 30fd6521b2fbd9b767e438e31945e5ea3e3a2fba; >= f9929ef6a2a55f03aac61248c6a3a987b8546f2a, < 7f1d6cb0eb6af3a8088dc24b7ddee9a9711538c4; >= f9929ef6a2a55f03aac61248c6a3a987b8546f2a, < ecd7e1c562cb08e41957fcd4b0e404de5ab38e20; >= f9929ef6a2a55f03aac61248c6a3a987b8546f2a, < 4b081ce0d830b684fdf967abc3696d1261387254
LinuxLinux5.17

References

Timeline

Published
Feb 21, 2024
Last modified
Aug 15, 2026
NVD status
Modified

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CVE-2023-52440: High severity, CVSS 7.8 | Vulnix