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CVE-2026-45846

kernel: bareudp: fix NULL pointer dereference in bareudp_fill_metadata_dst()

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Severity

Moderate

Red Hat Product Security

5.5

CVSS 3.1

Review impact separately from score.

Published · May 27, 2026

Updated · June 27, 2026

Description

A flaw was found in the bareudp driver of the Linux kernel. This vulnerability allows a local attacker to trigger a NULL pointer dereference in the bareudp_fill_metadata_dst() function. This occurs because the function attempts to access a NULL socket when the bareudp device is down, leading to a system crash and a Denial of Service (DoS).

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.1 · 5.5
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CWE-476 · NULL Pointer Dereference