SB20261007168 - Use-after-free in Linux kernel hwmon driver
Published: October 7, 2026
Security Bulletin ID
SB20261007168
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Use-after-free (CVE-ID: CVE-2026-98200)
CWE-ID: CWE-416 - Use After Free
CVSSv4: 2 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a local user to read freed kernel memory.
The vulnerability exists due to use-after-free in fungible_show() in the hp-wmi-sensors driver when reading a sensor's current_state debugfs entry concurrently with a sensor state update that replaces the current_state string. A local user can trigger overlapping reads of the same sensor to read freed kernel memory.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/72c85149794a1ccf8d718ffed1521106b5d31968
- https://git.kernel.org/stable/c/9c1e65bc79ff104914b11e6ad972139296ec86fe
- https://git.kernel.org/stable/c/b6b2a638aa36c441b2c8d0b6bd8ed2bb9701e795
- https://git.kernel.org/stable/c/e6cb0b4d4ecb8e71fd2200d907ab2e9663356f69
- https://git.kernel.org/stable/c/f59ecfd2c58bace39538f3fff7f43788b3fdb539