Linux Kernel up to 53e83828d352304fec5e19751f38ed8c65e6ec2f cifs cifs_server_dbg null pointer dereference

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5.5	$0-$5k	0.00

Summaryinfo

A vulnerability has been found in Linux Kernel up to 53e83828d352304fec5e19751f38ed8c65e6ec2f and classified as critical. The affected element is the function cifs_server_dbg of the component cifs. The manipulation leads to null pointer dereference. This vulnerability is documented as CVE-2025-37844. There is not any exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Linux Kernel up to 53e83828d352304fec5e19751f38ed8c65e6ec2f. This issue affects the function cifs_server_dbg of the component cifs. The manipulation with an unknown input leads to a null pointer dereference vulnerability. Using CWE to declare the problem leads to CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. Impacted is availability. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: cifs: avoid NULL pointer dereference in dbg call cifs_server_dbg() implies server to be non-NULL so move call under condition to avoid NULL pointer dereference. Found by Linux Verification Center (linuxtesting.org) with SVACE.

It is possible to read the advisory at git.kernel.org. The identification of this vulnerability is CVE-2025-37844 since 04/16/2025. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 237255 (Debian dla-4178 : ata-modules-5.10.0-34-armmp-di - security update), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 5.10.237, 5.15.181, 6.1.135, 6.6.88, 6.12.24, 6.13.12, 6.14.3 or 6.15-rc1 eliminates this vulnerability. Applying the patch ba3ce6c60cd5db258687dfeba9fc608f5e7cadf3/9c9000cb91b986eb7f75835340c67857ab97c09b/b2a1833e1c63e2585867ebeaf4dd41494dcede4b/864ba5c651b03830f36f0906c21af05b15c1aaa6/e0717385f5c51e290c2cd2ad4699a778316b5132/20048e658652e731f5cadf4a695925e570ca0ff9/6c14ee6af8f1f188b668afd6d003f7516a507b08/b4885bd5935bb26f0a414ad55679a372e53f9b9b is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the databases at Tenable (237255) and CERT Bund (WID-SEC-2025-1114). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Affected

• Debian Linux
• Amazon Linux 2
• Red Hat Enterprise Linux
• Ubuntu Linux
• SUSE Linux
• Oracle Linux
• SUSE openSUSE
• Dell Avamar
• Open Source Linux Kernel
• Dell NetWorker
• Dell Secure Connect Gateway

Productinfo

Type

• Operating System

Vendor

• Linux

Name

• Kernel

Version

• 5.10.236
• 5.15.180
• 6.1.134
• 6.6.0
• 6.6.1
• 6.6.2
• 6.6.3
• 6.6.4
• 6.6.5
• 6.6.6
• 6.6.7
• 6.6.8
• 6.6.9
• 6.6.10
• 6.6.11
• 6.6.12
• 6.6.13
• 6.6.14
• 6.6.15
• 6.6.16
• 6.6.17
• 6.6.18
• 6.6.19
• 6.6.20
• 6.6.21
• 6.6.22
• 6.6.23
• 6.6.24
• 6.6.25
• 6.6.26
• 6.6.27
• 6.6.28
• 6.6.29
• 6.6.30
• 6.6.31
• 6.6.32
• 6.6.33
• 6.6.34
• 6.6.35
• 6.6.36
• 6.6.37
• 6.6.38
• 6.6.39
• 6.6.40
• 6.6.41
• 6.6.42
• 6.6.43
• 6.6.44
• 6.6.45
• 6.6.46
• 6.6.47
• 6.6.48
• 6.6.49
• 6.6.50
• 6.6.51
• 6.6.52
• 6.6.53
• 6.6.54
• 6.6.55
• 6.6.56
• 6.6.57
• 6.6.58
• 6.6.59
• 6.6.60
• 6.6.61
• 6.6.62
• 6.6.63
• 6.6.64
• 6.6.65
• 6.6.66
• 6.6.67
• 6.6.68
• 6.6.69
• 6.6.70
• 6.6.71
• 6.6.72
• 6.6.73
• 6.6.74
• 6.6.75
• 6.6.76
• 6.6.77
• 6.6.78
• 6.6.79
• 6.6.80
• 6.6.81
• 6.6.82
• 6.6.83
• 6.6.84
• 6.6.85
• 6.6.86
• 6.6.87
• 6.12.0
• 6.12.1
• 6.12.2
• 6.12.3
• 6.12.4
• 6.12.5
• 6.12.6
• 6.12.7
• 6.12.8
• 6.12.9
• 6.12.10
• 6.12.11
• 6.12.12
• 6.12.13
• 6.12.14
• 6.12.15
• 6.12.16
• 6.12.17
• 6.12.18
• 6.12.19
• 6.12.20
• 6.12.21
• 6.12.22
• 6.12.23
• 6.13.0
• 6.13.1
• 6.13.2
• 6.13.3
• 6.13.4
• 6.13.5
• 6.13.6
• 6.13.7
• 6.13.8
• 6.13.9
• 6.13.10
• 6.13.11
• 6.14.0
• 6.14.1
• 6.14.2
• 53e83828d352304fec5e19751f38ed8c65e6ec2f

License

• open-source

Website

• Vendor: https://www.kernel.org/

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.6
VulDB Meta Temp Score: 5.5

VulDB Base Score: 5.7
VulDB Temp Score: 5.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Nessus ID: 237255
Nessus Name: Debian dla-4178 : ata-modules-5.10.0-34-armmp-di - security update

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Kernel 5.10.237/5.15.181/6.1.135/6.6.88/6.12.24/6.13.12/6.14.3/6.15-rc1
Patch: ba3ce6c60cd5db258687dfeba9fc608f5e7cadf3/9c9000cb91b986eb7f75835340c67857ab97c09b/b2a1833e1c63e2585867ebeaf4dd41494dcede4b/864ba5c651b03830f36f0906c21af05b15c1aaa6/e0717385f5c51e290c2cd2ad4699a778316b5132/20048e658652e731f5cadf4a695925e570ca0ff9/6c14ee6af8f1f188b668afd6d003f7516a507b08/b4885bd5935bb26f0a414ad55679a372e53f9b9b

Timelineinfo

04/16/2025 🔍
05/09/2025 +23 days 🔍
05/09/2025 +0 days 🔍
12/14/2025 +219 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2025-37844 (🔍)
GCVE (CVE): GCVE-0-2025-37844
GCVE (VulDB): GCVE-100-308171
CERT Bund: WID-SEC-2025-1114 - Linux Kernel: Mehrere Schwachstellen

Entryinfo

Created: 05/09/2025 09:12
Updated: 12/14/2025 10:39
Changes: 05/09/2025 09:12 (59), 05/27/2025 06:05 (2), 08/10/2025 04:55 (7), 09/27/2025 21:32 (1), 11/12/2025 06:18 (1), 11/17/2025 14:44 (11), 12/14/2025 10:39 (1)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Discussion

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