CVE-2025-38562

MEDIUM EPSS 93.5%
Published Aug 19, 202510mo ago · Modified Jun 17, 20261w ago
5.5 CVSS 3.1
Medium
Find Similar
Published Aug 19, 2025 10mo ago
Last Modified Jun 17, 2026 1w ago

Description

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix null pointer dereference error in generate_encryptionkey If client send two session setups with krb5 authenticate to ksmbd, null pointer dereference error in generate_encryptionkey could happen. sess->Preauth_HashValue is set to NULL if session is valid. So this patch skip generate encryption key if session is valid.

CVSS Details

Base Score
5.5
Exploitability
1.8
Impact
3.6
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
93.5% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-476 NULL Pointer Dereference Memory Safety

Affected Products 6

VendorProductVersionRange
linuxlinux_kernel*≥5.15  –  <6.1.148
linuxlinux_kernel*≥6.2  –  <6.6.102
linuxlinux_kernel*≥6.7  –  <6.12.42
linuxlinux_kernel*≥6.13  –  <6.15.10
linuxlinux_kernel*≥6.16  –  <6.16.1
debiandebian_linux11.0any

References 9

  • git.kernel.org https://git.kernel.org/stable/c/015ef163d65496ae3ba6192c96140a22743f0353
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/2a30ed6428ce83afedca1a6c5c5c4247bcf12d0e
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/922f85e6e88fdea723a26854c3a6dcb4beb8d0b9
  • git.kernel.org https://git.kernel.org/stable/c/96a82e19434a2522525baab59c33332658bc7653
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/9b493ab6f35178afd8d619800df9071992f715de
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/9c2dbbc959e1fcc6f603a1a843e9cf743ba383bb
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/d79c8bebaa622ee223128be7c66d8aaeeb634a57
    Patch
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html
    Mailing ListThird Party Advisory
  • zerodayinitiative.com https://www.zerodayinitiative.com/advisories/ZDI-25-917/
    Mailing ListThird Party Advisory

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/015ef163d65496ae3ba6192c96140a22743f0353
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/2a30ed6428ce83afedca1a6c5c5c4247bcf12d0e
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/96a82e19434a2522525baab59c33332658bc7653
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/9b493ab6f35178afd8d619800df9071992f715de
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/9c2dbbc959e1fcc6f603a1a843e9cf743ba383bb
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/d79c8bebaa622ee223128be7c66d8aaeeb634a57
    Patch