CVE Database›Document archive›CVE-2026-53034

CVE-2026-53034

kernel: bpf, sockmap: Fix af_unix null-ptr-deref in proto update

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Severity

Moderate

Red Hat Product Security

7

CVSS 3.1

Review impact separately from score.

Published · June 24, 2026

Updated · July 15, 2026

Description

A flaw was found in the Linux kernel's Berkeley Packet Filter (BPF) and sockmap components, specifically within the af_unix socket operations. A race condition occurs during the connection process where a socket's state is updated before its peer is fully assigned. This timing issue can lead to a null-pointer dereference when the unix_stream_bpf_update_proto() function is called, potentially causing a system crash and resulting in 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 · 7
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

CWE-367 · Time-of-check Time-of-use (TOCTOU) Race Condition