CVE-2025-21947

MEDIUM EPSS 24.6%
Published Apr 1, 20251y ago · Modified Jun 17, 20262w ago
4.7 CVSS 3.1
Medium
Find Similar
Published Apr 1, 2025 1y ago
Last Modified Jun 17, 2026 2w ago

Description

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix type confusion via race condition when using ipc_msg_send_request req->handle is allocated using ksmbd_acquire_id(&ipc_ida), based on ida_alloc. req->handle from ksmbd_ipc_login_request and FSCTL_PIPE_TRANSCEIVE ioctl can be same and it could lead to type confusion between messages, resulting in access to unexpected parts of memory after an incorrect delivery. ksmbd check type of ipc response but missing add continue to check next ipc reponse.

CVSS Details

Base Score
4.7
Exploitability
1.0
Impact
3.6
Vector string
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector Local
Attack Complexity High
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
24.6% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-362

Affected Products 9

VendorProductVersionRange
linuxlinux_kernel*≥5.15  –  <6.1.131
linuxlinux_kernel*≥6.2  –  <6.6.83
linuxlinux_kernel*≥6.7  –  <6.12.19
linuxlinux_kernel*≥6.13  –  <6.13.7
linuxlinux_kernel6.14any
linuxlinux_kernel6.14any
linuxlinux_kernel6.14any
linuxlinux_kernel6.14any
linuxlinux_kernel6.14any

References 6

  • git.kernel.org https://git.kernel.org/stable/c/1e8833c03a38e1d5d5df6484e3f670a2fd38fb76
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/3cb2b2e41541fe6f9cc55ca22d4c0bd260498aea
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/6321bbda4244b93802d61cfe0887883aae322f4b
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/76861630b29e51373e73e7b00ad0d467b6941162
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/e2ff19f0b7a30e03516e6eb73b948e27a55bc9d2
    Patch
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/1e8833c03a38e1d5d5df6484e3f670a2fd38fb76
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/3cb2b2e41541fe6f9cc55ca22d4c0bd260498aea
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/6321bbda4244b93802d61cfe0887883aae322f4b
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/76861630b29e51373e73e7b00ad0d467b6941162
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/e2ff19f0b7a30e03516e6eb73b948e27a55bc9d2
    Patch