Incorrect Check of Function Return Value in Linux kernel - CVE-2026-74380

CSH
CYBERSECURITY HELP
Sign In REGISTER
 
Main Vulnerability Database Vulnerabilities #VU142785

Incorrect Check of Function Return Value in Linux kernel - CVE-2026-74380

Published: August 15, 2026


Vulnerability identifier: #VU142785
CSH Severity: Low
CVSS v4: 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]
CVE-ID: CVE-2026-74380
CWE-ID: CWE-253
Exploitation vector: Local access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to improper handling of error return values in pin_job() in the host1x GPU driver when mapping scatter-gather tables through the IOMMU. A local user can trigger the affected code path to cause a denial of service.

The issue involves assigning the iommu_map_sgtable() result to an incorrect integer type, which can turn error conditions into negative overflowed values.


Affected software

Linux kernel
Ubuntu
linux-gcp-7.0 (Ubuntu package)
linux-azure-7.0 (Ubuntu package)

How to mitigate CVE-2026-74380

Install security update from vendor's repository.

Linux kernel - update to 7.0 rc3
linux-gcp-7.0 (Ubuntu package) - addressed in versions 7.0.0-38.38~24.04.4, 7.0.0-1013.13~24.04.1, 7.0.0-1014.14~24.04.1
linux-azure-7.0 (Ubuntu package) - addressed in versions 7.0.0-1016.16~24.04.1, 7.0.0-1017.17~24.04.1

External References

Related Security Bulletins