CVE-2026-97550
Received Received - Intake

XFS Filesystem Unit Conversion Flaw in Linux Kernel

Publication date: 2026-09-25

Last updated on: 2026-09-25

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: xfs: fix unit conversions in per_binval computation LOLLM noticed that we're doing the unit conversion in the per_binval computation backwards -- xfs_buf_inval_log_space's second parameter is supposed to be in bytes, but max_binval is in units of fsblocks. Hence the conversion should be FSB -> B, not the other way around.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published
2026-09-25
Last Modified
2026-09-25
Generated
2026-10-15
AI Q&A
2026-09-25
EPSS Evaluated
2026-10-14
NVD
CVE-2026-97550
EUVD
EUVD-2026-86858

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
linux linux_kernel *

Helpful Resources

Exploitability

CWE
CWE Icon
KEV
KEV Icon
CWE ID Description
CWE-UNKNOWN

Attack-Flow Graph

AI Quick Actions

Instant insights powered by AI
Executive Summary

This vulnerability in the Linux kernel involves an incorrect unit conversion in the XFS filesystem's per_binval computation. The function xfs_buf_inval_log_space expects its second parameter in bytes, but the code was converting from filesystem blocks to bytes in the wrong direction. This could lead to incorrect calculations when determining buffer invalidation space.

Detection Guidance

This vulnerability is specific to the XFS filesystem in the Linux kernel and involves incorrect unit conversions in buffer invalidation logic. Detection requires checking the kernel version and XFS filesystem usage. No direct commands are provided in the context to detect this issue.

Impact Analysis

This vulnerability may cause filesystem operations to behave unpredictably or fail. It could lead to data corruption, system crashes, or incorrect buffer invalidation, potentially disrupting file operations on systems using the XFS filesystem.

Compliance Impact

This vulnerability does not directly affect compliance with GDPR, HIPAA, or similar standards. It is a low-level Linux kernel issue related to incorrect unit conversions in XFS filesystem operations, which does not involve data privacy, security controls, or regulatory compliance requirements.

Mitigation Strategies

Update the Linux kernel to the patched version that resolves the xfs unit conversion issue in per_binval computation. Monitor vendor advisories for kernel updates addressing this specific flaw.

Chat Assistant

Ask questions about this CVE
Hi! I’m here to help you understand CVE-2026-97550. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70

EPSS Chart