VULNERABILITY INTELLIGENCE

CVE-2025-21994

CVSS score7.6 HIGH
EPSS probability0.31%
CISA KEVNot currently listed
Published2025-04-02
Last modified2026-07-30
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H

Description

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix incorrect validation for num_aces field of smb_acl parse_dcal() validate num_aces to allocate posix_ace_state_array. if (num_aces > ULONG_MAX / sizeof(struct smb_ace *)) It is an incorrect validation that we can create an array of size ULONG_MAX. smb_acl has ->size field to calculate actual number of aces in request buffer size. Use this to check invalid num_aces.

Weakness classification

  • nvd@nist.gov: NVD-CWE-noinfo

Primary references