SB2026091215 - Use-after-free in Linux kernel Rust Devres resource-management component (rust/kernel/devres.rs)
Published: September 12, 2026
Security Bulletin ID
SB2026091215
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-2026-89764)
CWE-ID: CWE-416 - Use After Free
CVSSv4: 2 [CVSS:4.0/AV:L/AC:L/AT:P/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 use-after-free condition.
The vulnerability exists due to a race condition in the Rust Devres resource-management component when concurrently revoking a Devres object. A local user can trigger concurrent resource revocation to cause a use-after-free condition.
The condition occurs when the release callback and Devres destruction execute concurrently.
Remediation
Install update from vendor's website.