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VULNERABILITIES

CVE-2025-21994 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:5.5 MEDIUMVector:CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CNA: kernel.orgCVSS-B:7.6 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.

URLSource(s)Tag(s)
https://git.kernel.org/stable/c/1b8b67f3c5e5169535e26efedd3e422172e2db64 kernel.orgPatch
https://git.kernel.org/stable/c/9c4e202abff45f8eac17989e549fc7a75095f675 kernel.orgPatch
https://git.kernel.org/stable/c/a4cb17797a5d241f1e509cb5b46ed95a80c2f5fd kernel.orgPatch
https://git.kernel.org/stable/c/c3a3484d9d31b27a3db0fab91fcf191132d65236 kernel.orgPatch
https://git.kernel.org/stable/c/d0f87370622a853b57e851f7d5a5452b72300f19 kernel.orgPatch

see all 7 references

Weakness Enumeration

CWE-IDCWE NameSource
NVD-CWE-noinfoInsufficient Information to Classify Weakness[email protected]

Affected Products

ProductVersions
linux linux kernel
>= 5.15, < 5.15.180
>= 5.16, < 6.1.132
>= 6.2, < 6.6.85
>= 6.7, < 6.12.21
>= 6.13, < 6.13.9

CPE

  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.14:rc1:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.14:rc2:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.14:rc3:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.14:rc4:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.14:rc5:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

6 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2025-21994
NVD Published Date:
Apr 2, 2025
NVD Last Modified:
Jul 30, 2026
Source:
kernel.org
CVE-2025-21994 Details - Not Deferred