CVE-2023-38427

CRITICAL EPSS 62.3%
Published Jul 18, 20232y ago · Modified Jun 17, 20262w ago
9.8 CVSS 3.1
Critical
Find Similar
Published Jul 18, 2023 2y ago
Last Modified Jun 17, 2026 2w ago

Description

An issue was discovered in the Linux kernel before 6.3.8. fs/smb/server/smb2pdu.c in ksmbd has an integer underflow and out-of-bounds read in deassemble_neg_contexts.

CVSS Details

Base Score
9.8
Exploitability
3.9
Impact
5.9
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
62.3% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 2

CWE-125 Out-of-bounds Read Memory Safety
CWE-191

Affected Products 7

VendorProductVersionRange
linuxlinux_kernel*≥5.15  –  <5.15.145
linuxlinux_kernel*≥5.16  –  <6.1.34
linuxlinux_kernel*≥6.2  –  <6.3.8
netapph300s*any
netapph410s*any
netapph500s*any
netapph700s*any

References 3

  • cdn.kernel.org https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.3.8
    Release Notes
  • git.kernel.org https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/fs/smb/server?id=f1a411873c85b642f13b01f21b534c2bab81fc1b
    Patch
  • security.netapp.com https://security.netapp.com/advisory/ntap-20230824-0011/
    Third Party Advisory

Remediation

  • git.kernel.org https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/fs/smb/server?id=f1a411873c85b642f13b01f21b534c2bab81fc1b
    Patch