CVE-2025-22037CWE-476

CVE-2025-22037

High · published April 16, 2025

Patch now

High probability of exploitation

CVSS calls it high at 7.5. It sits in the 99.4th percentile for exploit probability.

CVSS v3.1
7.5
EPSS
70%
Percentile
99.4
In the wild
Unconfirmed
What it is

In the Linux kernel, the following vulnerability has been resolved:

ksmbd: fix null pointer dereference in alloc_preauth_hash()

The Client send malformed smb2 negotiate request. ksmbd return error

response. Subsequently, the client can send smb2 session setup even

thought conn->preauth_info is not allocated.

This patch add KSMBD_SESS_NEED_SETUP status of connection to ignore

session setup request if smb2 negotiate phase is not complete.

The record
Technical detail
CVSS v3.1
7.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.69510 · 99.4th percentile
Weakness
CWE-476 · NULL Pointer Dereference
Published
2025-04-16T19:15Z
Affected products (4)
ProductVersionsFixed in
linux/linux_kernel≥ 6.6, < 6.6.1076.6.107
linux/linux_kernel≥ 6.12, < 6.12.236.12.23
linux/linux_kernel≥ 6.13, < 6.13.116.13.11
linux/linux_kernel≥ 6.14, < 6.14.26.14.2
References (6)
https://git.kernel.org/stable/c/8f216b33a5e1b3489c073b1ea1b3d7cb63c8dc4d · 416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b8eb243e670ecf30e91524dd12f7260dac07d335 · 416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c8b5b7c5da7d0c31c9b7190b4a7bba5281fc4780 · 416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ca8bed31edf728a662ef9d6f39f50e7a7dc2b5ad · 416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/cce57cd8c5dead24127cf2308fdd60fcad2d6ba6 · 416baaa9-dc9f-4396-8d5f-8c081fb06d67https://www.zerodayinitiative.com/advisories/ZDI-25-310/ · 416baaa9-dc9f-4396-8d5f-8c081fb06d67
EPSS history
Timeline
  • 16 APR 14:11Z
    ksmbd: fix null pointer dereference in alloc_preauth_hash()
    cvelistv5