Linux Kernel xgene-hwmon.c xgene_hwmon_remove use after free

Summaryinfo

A vulnerability identified as problematic has been detected in Linux Kernel. This issue affects the function xgene_hwmon_remove of the file drivers/hwmon/xgene-hwmon.c. This manipulation causes use after free. This vulnerability is handled as CVE-2023-1855. It is possible to launch the attack on the local host. There is not any exploit available.

Detailsinfo

A vulnerability has been found in Linux Kernel (Operating System) (affected version not known) and classified as problematic. Affected by this vulnerability is the function xgene_hwmon_remove of the file drivers/hwmon/xgene-hwmon.c. The manipulation with an unknown input leads to a use after free vulnerability. The CWE definition for the vulnerability is CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

A use-after-free flaw was found in xgene_hwmon_remove in drivers/hwmon/xgene-hwmon.c in the Hardware Monitoring Linux Kernel Driver (xgene-hwmon). This flaw could allow a local attacker to crash the system due to a race problem. This vulnerability could even lead to a kernel information leak problem.

The weakness was released 04/06/2023. It is possible to read the advisory at lore.kernel.org. This vulnerability is known as CVE-2023-1855 since 04/05/2023. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 06/21/2025).

The vulnerability scanner Nessus provides a plugin with the ID 239742 (TencentOS Server 2: kernel (TSSA-2024:1030)), which helps to determine the existence of the flaw in a target environment.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at Tenable (239742). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

• Operating System

Vendor

• Linux

Name

• Kernel

License

• open-source

Website

• Vendor: https://www.kernel.org/

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

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