CVE-2026-46320

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 9, 2026 (30 days ago)
Last Modified: June 9, 2026
Vendor: Red Hat
Source: REDHAT

Description

A flaw was found in the Linux kernel's tap driver. This vulnerability occurs in the `tap_get_user_xdp()` function, where allocated memory pages are not properly freed when processing rejected network frames. Specifically, if a frame is shorter than the expected Ethernet header length or if memory allocation fails, the error handling paths do not release the previously allocated page. This oversight can lead to a memory leak, as each rejected frame in a batch can cause one page-frag chunk to be leaked, potentially impacting system stability and performance over time.

CWE

CWE-772

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