CVE-2025-37776

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

Severity Score

7.8

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix use-after-free in smb_break_all_levII_oplock() There is a room in smb_break_all_levII_oplock that can cause racy issues
when unlocking in the middle of the loop. This patch use read lock
to protect whole loop.

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix use-after-free in smb_break_all_levII_oplock() There is a room in smb_break_all_levII_oplock that can cause racy issues when unlocking in the middle of the loop. This patch use read lock to protect whole loop.

*Credits: N/A

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Local

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2025-04-16 CVE Reserved
2025-05-01 CVE Published
2025-05-01 CVE Updated
2025-05-02 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CAPEC

References (4)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC
https://git.kernel.org/stable/c/296cb5457cc6f4a754c4ae29855f8a253d52bcc6	2025-04-25
https://git.kernel.org/stable/c/d54ab1520d43e95f9b2e22d7a05fc9614192e5a5	2025-04-25
https://git.kernel.org/stable/c/d73686367ad68534257cd88a36ca3c52cb8b81d8	2025-04-25
https://git.kernel.org/stable/c/18b4fac5ef17f77fed9417d22210ceafd6525fc7	2025-04-15

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 6.6.88 Search vendor "Linux" for product "Linux Kernel" and version " < 6.6.88"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 6.12.25 Search vendor "Linux" for product "Linux Kernel" and version " < 6.12.25"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 6.14.4 Search vendor "Linux" for product "Linux Kernel" and version " < 6.14.4"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 6.15-rc3 Search vendor "Linux" for product "Linux Kernel" and version " < 6.15-rc3"		en		Affected