SB20260918266 - Use-after-free in Linux kernel platform chrome driver
Published: September 18, 2026
Security Bulletin ID
SB20260918266
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Partial DoS
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Use-after-free (CVE-ID: CVE-2026-90404)
CWE-ID: CWE-416 - Use After Free
CVSSv4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to use-after-free in the cros_ec_debugfs remove path when an EC panic notification is delivered after the device instance has been removed. A local user can trigger an EC panic notification after device removal to cause a denial of service.
The callback can queue work that accesses released data.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/05c1081ae4503e45b934b390350f942db3208892
- https://git.kernel.org/stable/c/56989e2a9c292ff7689603feed41d030301ca636
- https://git.kernel.org/stable/c/a5d3128b06ccfc398c2e456fddebadce52310bd8
- https://git.kernel.org/stable/c/e2cbe14361d7cb0b5abd66d87f3afa0e16efde9f
- https://git.kernel.org/stable/c/e5954d3031fb55dd31aa59bae477d63c68e941c0