CVE Database›Document archive›CVE-2023-54253

CVE-2023-54253

kernel: btrfs: set page extent mapped after read_folio in relocate_one_page

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Severity

Moderate

Red Hat Product Security

4.4

CVSS 3.1

Review impact separately from score.

Published · December 30, 2025

Updated · June 30, 2026

Description

A reachable assertion flaw was discovered in the Btrfs component of the Linux kernel in the relocate_one_page() path. Under certain conditions during file relocation, a kernel assertion (PagePrivate(page) && page->private) can be triggered, leading to an internal BUG() and Oops, causing the kernel to crash. This occurs because of improper ordering of page cache metadata updates relative to the read of the page’s folio, allowing a local user with appropriate permissions to provoke the assertion failure and cause a denial of service (system crash)

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

Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.

CVSS / CWE

CVSS 3.1 · 4.4
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

CWE-617 · Reachable Assertion