CVE-2023-52440CWE-119

CVE-2023-52440

Critical · published February 21, 2024

CVSS v3.1
9.8
EPSS
22%
Percentile
97.6
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.21909 · 97.6th percentile
Weakness
CWE-119 · Improper Restriction of Operations within the Bounds of a Memory Buffer
Published
2024-02-21T13:15Z
Affected products (3)
ProductVersionsFixed in
linux/linux_kernel≥ 5.17.0, < 6.1.526.1.52
linux/linux_kernel≥ 6.2.0, < 6.4.156.4.15
linux/linux_kernel≥ 6.5.0, < 6.5.26.5.2
References (10)
EPSS history
Timeline
  • 21 FEB 07:21Z
    ksmbd: fix slub overflow in ksmbd_decode_ntlmssp_auth_blob()
    cvelistv5