CVE-2025-38437

ksmbd: fix potential use-after-free in oplock/lease break ack

CVE-2025-38437 is fixed in linux on 1 platform, first by DEBIAN-CVE-2025-38437, released July 25, 2025. It is not reported as exploited. Patch Radar priority: High.

High

CVSS

7.8

high

Exploitation

None reported

No vendor assessment

CISA KEV

Not listed

Not in the Known Exploited Vulnerabilities catalog

EPSS

0.0045

38th percentile

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix potential use-after-free in oplock/lease break ack If ksmbd_iov_pin_rsp return error, use-after-free can happen by accessing opinfo->state and opinfo_put and ksmbd_fd_put could called twice.

Where it's fixed

Product	Fixed in	Fix	Released
Linux
linux · Debian 12.15 (bookworm)	6.1.147-1	DEBIAN-CVE-2025-38437	Jul 25, 2025
linux · Debian 13.5 (trixie)	6.12.41-1	DEBIAN-CVE-2025-38437	Jul 25, 2025
linux · Debian 14	6.16.3-1	DEBIAN-CVE-2025-38437	Jul 25, 2025

Details

Published
July 25, 2025
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Vendor advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-38437

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