SB20260925148 - Integer underflow in Linux kernel drm nouveau driver
Published: September 25, 2026
Security Bulletin ID
SB20260925148
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) Integer underflow (CVE-ID: CVE-2026-93233)
CWE-ID: CWE-191 - Integer underflow
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 an integer underflow in nouveau_dmem_folio_split when splitting large device-private folios. A local user can trigger a large device-private folio split to cause a denial of service.
Remediation
Install update from vendor's website.