Linux Kernel up to 6.11.5 fs free_mnt_ns privilege escalation

CVSS Meta Temp Score
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CTI Interest Score
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5.4$0-$5k0.00

Summaryinfo

A vulnerability categorized as problematic has been discovered in Linux Kernel up to 6.11.5. Impacted is the function free_mnt_ns of the component fs. Such manipulation leads to an unknown weakness. This vulnerability is listed as CVE-2024-50204. There is no available exploit. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in Linux Kernel up to 6.11.5. It has been rated as problematic. Affected by this issue is the function free_mnt_ns of the component fs. The impact remains unknown. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: fs: don't try and remove empty rbtree node When copying a namespace we won't have added the new copy into the namespace rbtree until after the copy succeeded. Calling free_mnt_ns() will try to remove the copy from the rbtree which is invalid. Simply free the namespace skeleton directly.

The advisory is shared for download at git.kernel.org. This vulnerability is handled as CVE-2024-50204 since 10/21/2024. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 216493 (Ubuntu 24.10 : Linux kernel vulnerabilities (USN-7276-1)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 6.11.6 eliminates this vulnerability. Applying the patch a8b155a2c30d/229fd15908fe 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 (216493). Once again VulDB remains the best source for vulnerability data.

Productinfo

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Version

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.4

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

NVD Base Score: 5.5
NVD Vector: 🔍

CVSSv2info

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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: 🔍

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Nessus ID: 216493
Nessus Name: Ubuntu 24.10 : Linux kernel vulnerabilities (USN-7276-1)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Kernel 6.11.6
Patch: a8b155a2c30d/229fd15908fe

Timelineinfo

10/21/2024 🔍
11/08/2024 +18 days 🔍
11/08/2024 +0 days 🔍
02/20/2025 +104 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2024-50204 (🔍)
GCVE (CVE): GCVE-0-2024-50204
GCVE (VulDB): GCVE-100-283508

Entryinfo

Created: 11/08/2024 07:29
Updated: 02/20/2025 01:37
Changes: 11/08/2024 07:29 (57), 11/20/2024 04:25 (11), 02/20/2025 01:37 (2)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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