Linux Kernel up to 6.6.17/6.7.5 SMB Client id/uid/cruid privilege escalation

Summaryinfo

A vulnerability identified as problematic has been detected in Linux Kernel up to 6.6.17/6.7.5. Affected by this issue is some unknown functionality of the component SMB Client. Performing a manipulation of the argument id/uid/cruid results in an unknown weakness. This vulnerability is reported as CVE-2024-26822. No exploit exists. You should upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic has been found in Linux Kernel up to 6.6.17/6.7.5. This affects some unknown functionality of the component SMB Client. The manipulation of the argument id/uid/cruid with an unknown input leads to a unknown weakness. The impact remains unknown. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: smb: client: set correct id, uid and cruid for multiuser automounts When uid, gid and cruid are not specified, we need to dynamically set them into the filesystem context used for automounting otherwise they'll end up reusing the values from the parent mount.

It is possible to read the advisory at git.kernel.org. This vulnerability is uniquely identified as CVE-2024-26822 since 02/19/2024. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 213300 (Ubuntu 20.04 LTS / 22.04 LTS : Linux kernel vulnerabilities (USN-7179-1)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 6.6.18, 6.7.6 or 6.8 eliminates this vulnerability. Applying the patch c2aa2718cda2/7590ba9057c6/4508ec173570 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 (213300). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

• Operating System

Vendor

• Linux

Name

• Kernel

Version

• 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
• 6.7.0
• 6.7.1
• 6.7.2
• 6.7.3
• 6.7.4
• 6.7.5

License

• open-source

Website

• Vendor: https://www.kernel.org/

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

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

Discussion