CVE-2026-53230

medium Red Hat
CVSS v3 Base Score
7.0
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS Score
0.2%
Exploitation probability in 30 days
Top 93% most likely to be exploited
Attack Characteristics
Attack Vector
Local
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Confidentiality
High
Integrity
High
Availability
High
Published: June 25, 2026 (14 days ago)
Last Modified: June 25, 2026
Vendor: Red Hat
Source: REDHAT

Description

A flaw was found in the Linux kernel's mlx5 driver. The mlx5_query_nic_vport_mac_list function, which handles querying network interface card (NIC) virtual port (vport) MAC addresses, incorrectly sizes its internal buffer. When a Virtual Function (VF) vport is queried with a larger configured maximum, the firmware response can overflow this buffer. This leads to a memory corruption issue, specifically a slab-out-of-bounds error, which could potentially be exploited by an attacker to cause a denial of service or other system instability.

CWE

CWE-787

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