CVE-2026-46312

medium Red Hat
CVSS v3 Base Score
5.5
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Characteristics
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Confidentiality
None
Integrity
None
Availability
High
Published: June 8, 2026 (32 days ago)
Last Modified: June 8, 2026
Vendor: Red Hat
Source: REDHAT

Description

A flaw was found in the videobuf2 subsystem of the Linux kernel. The vb2_dma_sg_mmap function did not correctly set Virtual Memory Area (VMA) flags, specifically VM_DONTEXPAND and VM_DONTDUMP. This oversight could lead to a kernel warning and system crash when mapping an imported Direct Memory Access (DMA) buffer, resulting in a denial of service.

CWE

CWE-628

Affected Products

Red Hat Enterprise Linux 10Red Hat Enterprise Linux 6Red Hat Enterprise Linux 7Red Hat Enterprise Linux 8Red Hat Enterprise Linux 9

References

🔗 bugzilla.redhat.com 🔗 www.cve.org 🔗 nvd.nist.gov 🔗 lore.kernel.org