Use After Free Affecting linux-virt package, versions <6.12.27-r0


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.02% (3rd percentile)

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  • Snyk IDSNYK-MINIMOSLATEST-LINUXVIRT-14048334
  • published19 Nov 2025
  • disclosed1 May 2025

Introduced: 1 May 2025

CVE-2025-37777  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade Minimos:latest linux-virt to version 6.12.27-r0 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream linux-virt package and not the linux-virt package as distributed by Minimos. See How to fix? for Minimos:latest relevant fixed versions and status.

In the Linux kernel, the following vulnerability has been resolved:

ksmbd: fix use-after-free in __smb2_lease_break_noti()

Move tcp_transport free to ksmbd_conn_free. If ksmbd connection is referenced when ksmbd server thread terminates, It will not be freed, but conn->tcp_transport is freed. __smb2_lease_break_noti can be performed asynchronously when the connection is disconnected. __smb2_lease_break_noti calls ksmbd_conn_write, which can cause use-after-free when conn->ksmbd_transport is already freed.

CVSS Base Scores

version 3.1