SB20261023225 - Use-after-free in Linux kernel hid driver
Published: October 23, 2026
Security Bulletin ID
SB20261023225
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Use-after-free (CVE-ID: CVE-2026-98945)
CWE-ID: CWE-416 - Use After Free
CVSSv4: 5.7 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a local user to cause a denial of service through a kernel crash.
The vulnerability exists due to use-after-free in the Linux kernel Steam HID driver when callbacks are scheduled during device teardown and subsequently access a freed steam structure. A local user can potentially trigger this teardown race to cause a kernel crash by accessing freed memory.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/81a8209c09f9be7eef860ca6cc154749a6b4d243
- https://git.kernel.org/stable/c/86724f4bcf6049c3a322f7a7b1f968210059c46a
- https://git.kernel.org/stable/c/b5ea938ff776306798d3a11485c2475034f92131
- https://git.kernel.org/stable/c/d2587923d50c8b141ce0ccb284c714cf6054d6a7
- https://git.kernel.org/stable/c/ddce9641ce924ed91ec8304577e463823a29ffaf