CVE-2026-90115

kernel: xsk: fix NULL pointer dereference in __xsk_rcv()

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Severity

Moderate

Red Hat Product Security

5.5

CVSS 3.1

Review impact separately from score.

Published · September 17, 2026

Updated · October 29, 2026

Description

A flaw was found in the Linux kernel's AF_XDP (xsk) socket multi-buffer receive path. This vulnerability allows for a NULL pointer dereference in the __xsk_rcv() function due to improper handling of buffer allocation failures. An attacker could exploit this flaw to cause a system crash, leading to 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