SB2023110646 - Local denial of service in Linux kernel iommufd driver
Published: November 6, 2023
Security Bulletin ID
SB2023110646
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-2023-33250)
CWE-ID: CWE-416 - Use After Free
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a local privileged user to perform a denial of service (DoS) attack.
The vulnerability exists due to a use-after-free error within the iopt_unmap_iova_range in drivers/iommu/iommufd/io_pagetable.c. A local privileged user can trigger a use-after-free error and perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.