CVE-2023-54253
kernel: btrfs: set page extent mapped after read_folio in relocate_one_page
Severity
ModerateRed Hat Product Security
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 · 4.4CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
CWE-617 · Reachable Assertion