Linux Kernel up to 5.4.119/5.10.37/5.11.21/5.12.4 ceph __fh_to_dentry privilege escalation

Summaryinfo

A vulnerability was found in Linux Kernel up to 5.4.119/5.10.37/5.11.21/5.12.4. It has been classified as problematic. This vulnerability affects the function __fh_to_dentry of the component ceph. The manipulation leads to an unknown weakness. This vulnerability is documented as CVE-2021-47000. There is not any exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Linux Kernel up to 5.4.119/5.10.37/5.11.21/5.12.4 (Operating System). This issue affects the function __fh_to_dentry of the component ceph. The impact remains unknown. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: ceph: fix inode leak on getattr error in __fh_to_dentry

The weakness was released 02/28/2024. It is possible to read the advisory at git.kernel.org. The identification of this vulnerability is CVE-2021-47000 since 02/27/2024. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 276342 (TencentOS Server 2: kernel (TSSA-2024:0557)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 5.4.120, 5.10.38, 5.11.22, 5.12.5 or 5.13 eliminates this vulnerability. Applying the patch 2ad8af2b70e9/bf45c9fe99aa/22fa4c8288f1/0a219432127d/1775c7ddacfc 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 (276342). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

• Operating System

Vendor

• Linux

Name

• Kernel

Version

• 5.4.119
• 5.10.0
• 5.10.1
• 5.10.2
• 5.10.3
• 5.10.4
• 5.10.5
• 5.10.6
• 5.10.7
• 5.10.8
• 5.10.9
• 5.10.10
• 5.10.11
• 5.10.12
• 5.10.13
• 5.10.14
• 5.10.15
• 5.10.16
• 5.10.17
• 5.10.18
• 5.10.19
• 5.10.20
• 5.10.21
• 5.10.22
• 5.10.23
• 5.10.24
• 5.10.25
• 5.10.26
• 5.10.27
• 5.10.28
• 5.10.29
• 5.10.30
• 5.10.31
• 5.10.32
• 5.10.33
• 5.10.34
• 5.10.35
• 5.10.36
• 5.10.37
• 5.11.0
• 5.11.1
• 5.11.2
• 5.11.3
• 5.11.4
• 5.11.5
• 5.11.6
• 5.11.7
• 5.11.8
• 5.11.9
• 5.11.10
• 5.11.11
• 5.11.12
• 5.11.13
• 5.11.14
• 5.11.15
• 5.11.16
• 5.11.17
• 5.11.18
• 5.11.19
• 5.11.20
• 5.11.21
• 5.12.0
• 5.12.1
• 5.12.2
• 5.12.3
• 5.12.4

License

• open-source

Website

• Vendor: https://www.kernel.org/

CPE 2.3info

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CPE 2.2info

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Entryinfo

Be aware that VulDB is the high quality source for vulnerability data.

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