Linux Kernel up to 6.7.0 f2fs privilege escalation

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6.5	$0-$5k	0.00

Summaryinfo

A vulnerability described as problematic has been identified in Linux Kernel up to 6.7.0. This issue affects some unknown processing of the component f2fs. The manipulation results in an unknown weakness. This vulnerability is known as CVE-2023-52436. No exploit is available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability, which was classified as problematic, was found in Linux Kernel up to 6.7.0 (Operating System). Affected is an unknown code block of the component f2fs. The impact remains unknown. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: f2fs: explicitly null-terminate the xattr list When setting an xattr, explicitly null-terminate the xattr list. This eliminates the fragile assumption that the unused xattr space is always zeroed.

The weakness was published 02/21/2024. The advisory is shared for download at git.kernel.org. This vulnerability is traded as CVE-2023-52436 since 02/20/2024. There are neither technical details nor an exploit publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 239850 (TencentOS Server 4: kernel (TSSA-2024:0980)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 4.19.306, 5.4.268, 5.10.209, 5.15.148, 6.1.74, 6.6.13, 6.7.1 or 6.8-rc1 eliminates this vulnerability. Applying the patch 3e47740091b0/5de9e9dd1828/12cf91e23b12/16ae3132ff77/32a6cfc67675/2525d1ba225b/e26b6d39270f/f6c30bfe5a49 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 vulnerability database at Tenable (239850). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

• Operating System

Vendor

• Linux

Name

• Kernel

Version

• 4.19.305
• 5.4.267
• 5.10.208
• 5.15.147
• 6.0
• 6.1
• 6.1.0
• 6.1.1
• 6.1.2
• 6.1.3
• 6.1.4
• 6.1.5
• 6.1.6
• 6.1.7
• 6.1.8
• 6.1.9
• 6.1.10
• 6.1.11
• 6.1.12
• 6.1.13
• 6.1.14
• 6.1.15
• 6.1.16
• 6.1.17
• 6.1.18
• 6.1.19
• 6.1.20
• 6.1.21
• 6.1.22
• 6.1.23
• 6.1.24
• 6.1.25
• 6.1.26
• 6.1.27
• 6.1.28
• 6.1.29
• 6.1.30
• 6.1.31
• 6.1.32
• 6.1.33
• 6.1.34
• 6.1.35
• 6.1.36
• 6.1.37
• 6.1.38
• 6.1.39
• 6.1.40
• 6.1.41
• 6.1.42
• 6.1.43
• 6.1.44
• 6.1.45
• 6.1.46
• 6.1.47
• 6.1.48
• 6.1.49
• 6.1.50
• 6.1.51
• 6.1.52
• 6.1.53
• 6.1.54
• 6.1.55
• 6.1.56
• 6.1.57
• 6.1.58
• 6.1.59
• 6.1.60
• 6.1.61
• 6.1.62
• 6.1.63
• 6.1.64
• 6.1.65
• 6.1.66
• 6.1.67
• 6.1.68
• 6.1.69
• 6.1.70
• 6.1.71
• 6.1.72
• 6.1.73
• 6.2
• 6.3
• 6.4
• 6.5
• 6.6
• 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
• 6.7.0

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: 6.6
VulDB Meta Temp Score: 6.5

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
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: Privilege escalation
CWE: Unknown
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: 239850
Nessus Name: TencentOS Server 4: kernel (TSSA-2024:0980)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Kernel 4.19.306/5.4.268/5.10.209/5.15.148/6.1.74/6.6.13/6.7.1/6.8-rc1
Patch: 3e47740091b0/5de9e9dd1828/12cf91e23b12/16ae3132ff77/32a6cfc67675/2525d1ba225b/e26b6d39270f/f6c30bfe5a49

Timelineinfo

02/20/2024 🔍
02/21/2024 +1 days 🔍
02/21/2024 +0 days 🔍
06/19/2025 +484 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2023-52436 (🔍)
GCVE (CVE): GCVE-0-2023-52436
GCVE (VulDB): GCVE-100-254280

Entryinfo

Created: 02/21/2024 09:05
Updated: 06/19/2025 19:33
Changes: 02/21/2024 09:05 (41), 06/26/2024 01:56 (26), 06/19/2025 19:33 (2)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Discussion

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