SB20260918248 - Use-after-free in Linux kernel arm arm-smmu-v3 driver
Published: September 18, 2026
Security Bulletin ID
SB20260918248
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-2026-90426)
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 a use-after-free race condition in tegra241_cmdqv_remove() and tegra241_cmdqv_isr() when handling an error interrupt while VINTFs are being torn down. A local user can cause an error interrupt to be handled during VINTF teardown to cause a denial of service.
Remediation
Install update from vendor's website.