CVE Database›Document archive›CVE-2026-53095

CVE-2026-53095

kernel: bpf: Fix abuse of kprobe_write_ctx via freplace

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Severity

Moderate

Red Hat Product Security

6.4

CVSS 3.1

Review impact separately from score.

Published · June 24, 2026

Updated · July 22, 2026

Description

A flaw was found in the Linux kernel. This vulnerability allows for the abuse of the kprobe_write_ctx mechanism through freplace in Berkeley Packet Filter (BPF) kprobe programs. A local attacker could exploit this by attaching a freplace program to a kprobe program that is attached to a kernel function. This could lead to the modification of the kernel function's arguments, specifically setting the first argument to zero, potentially causing unexpected system behavior or impacting data integrity.

Statement

This CVE has been rated as Moderate because eBPF (and XDP) is restricted to root-only on Red Hat Enterprise Linux.

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 · 6.4
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H

CWE-94 · Improper Control of Generation of Code ('Code Injection')