SB20260918357 - Use-after-free in Linux kernel rapidio driver
Published: September 18, 2026
Security Bulletin ID
SB20260918357
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-2026-90319)
CWE-ID: CWE-416 - Use After Free
CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/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.
The vulnerability exists due to a use-after-free in the RapidIO rio_scan_alloc_net() failure path when handling a rio_add_net() failure. A local user can trigger a subsequent mport unregister path to dereference a dangling mport->net pointer and attempt to free the rio_net object again.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/24f60ebabeb8757cec8ec2f97660d521bc9147ec
- https://git.kernel.org/stable/c/332591a245de978349a7558f8b20469951bb77cc
- https://git.kernel.org/stable/c/3f00999e44d9984036a029dbad9d2afe94a674d0
- https://git.kernel.org/stable/c/44a37264b26911e13d0a4f5630751c4157ed0354
- https://git.kernel.org/stable/c/530a9d5ef831a0049dad9a6b2b92d02301352c38
- https://git.kernel.org/stable/c/6a760a53e73064735cdfa9e51c664983a89baf96
- https://git.kernel.org/stable/c/75f0bc167b96bbbef8182b88308c732af82c8d83
- https://git.kernel.org/stable/c/b74030fbf187b43c1f85b66a7082e9946511cb5d