CVE-2025-71150

MEDIUM EPSS 2.0%
Published Jan 23, 20265mo ago · Modified Jun 17, 20261w ago
5.5 CVSS 3.1
Medium
Find Similar
Published Jan 23, 2026 5mo ago
Last Modified Jun 17, 2026 1w ago

Description

In the Linux kernel, the following vulnerability has been resolved: ksmbd: Fix refcount leak when invalid session is found on session lookup When a session is found but its state is not SMB2_SESSION_VALID, It indicates that no valid session was found, but it is missing to decrement the reference count acquired by the session lookup, which results in a reference count leak. This patch fixes the issue by explicitly calling ksmbd_user_session_put to release the reference to the session.

CVSS Details

Base Score
5.5
Exploitability
1.8
Impact
3.6
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
2.0% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Affected Products 12

VendorProductVersionRange
linuxlinux_kernel*≥5.15.176  –  <5.16
linuxlinux_kernel*≥6.1.121  –  <6.1.160
linuxlinux_kernel*≥6.6.67  –  <6.6.120
linuxlinux_kernel*≥6.12.6  –  <6.12.64
linuxlinux_kernel*≥6.13.1  –  <6.18.3
linuxlinux_kernel6.13any
linuxlinux_kernel6.13any
linuxlinux_kernel6.13any
linuxlinux_kernel6.13any
linuxlinux_kernel6.13any
linuxlinux_kernel6.13any
linuxlinux_kernel6.19any

References 6

  • git.kernel.org https://git.kernel.org/stable/c/02e06785e85b4bd86ef3d23b7c8d87acc76773d5
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/0fb87b28cafae71e9c8248432cc3a6a1fd759efc
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/11fe566b442e3bc2774191740fd377739a87a1c0
  • git.kernel.org https://git.kernel.org/stable/c/8cabcb4dd3dc85dd83a37d26efcc59a66a4074d7
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/cafb57f7bdd57abba87725eb4e82bbdca4959644
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/e54fb2a4772545701766cba08aab20de5eace8cd
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/02e06785e85b4bd86ef3d23b7c8d87acc76773d5
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/0fb87b28cafae71e9c8248432cc3a6a1fd759efc
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/8cabcb4dd3dc85dd83a37d26efcc59a66a4074d7
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/cafb57f7bdd57abba87725eb4e82bbdca4959644
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/e54fb2a4772545701766cba08aab20de5eace8cd
    Patch