CVE-2025-37952

HIGH EPSS 4.7%
Published May 20, 20251y ago · Modified Jun 17, 20261w ago
7.8 CVSS 3.1
High
Find Similar
Published May 20, 2025 1y ago
Last Modified Jun 17, 2026 1w ago

Description

In the Linux kernel, the following vulnerability has been resolved: ksmbd: Fix UAF in __close_file_table_ids A use-after-free is possible if one thread destroys the file via __ksmbd_close_fd while another thread holds a reference to it. The existing checks on fp->refcount are not sufficient to prevent this. The fix takes ft->lock around the section which removes the file from the file table. This prevents two threads acquiring the same file pointer via __close_file_table_ids, as well as the other functions which retrieve a file from the IDR and which already use this same lock.

CVSS Details

Base Score
7.8
Exploitability
1.8
Impact
5.9
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
4.7% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-416 Use After Free Memory Safety

Affected Products 8

VendorProductVersionRange
linuxlinux_kernel*≥5.15  –  <6.6.91
linuxlinux_kernel*≥6.7  –  <6.12.29
linuxlinux_kernel*≥6.13  –  <6.14.7
linuxlinux_kernel6.15any
linuxlinux_kernel6.15any
linuxlinux_kernel6.15any
linuxlinux_kernel6.15any
linuxlinux_kernel6.15any

References 4

  • git.kernel.org https://git.kernel.org/stable/c/16727e442568a46d9cca69fe2595896de86e120d
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/36991c1ccde2d5a521577c448ffe07fcccfe104d
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/9e9841e232b51171ddf3bc4ee517d5d28dc8cad6
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/fec1f9e9a650e8e7011330a085c77e7bf2a08ea9
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/16727e442568a46d9cca69fe2595896de86e120d
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/36991c1ccde2d5a521577c448ffe07fcccfe104d
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/9e9841e232b51171ddf3bc4ee517d5d28dc8cad6
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/fec1f9e9a650e8e7011330a085c77e7bf2a08ea9
    Patch