CVE-2026-97545
Received Received - Intake

XFS Filesystem Buffer Leak 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: don't leak new_bp if xfs_btree_bload_drop_buf fails LOLLM observes that in xfs_btree_bload_prep_block, xfs_btree_bload_drop_buf can hit an IO error if writing the delwri buffer list to disk fails. In this case, we fail to release new_bp, which means we lose a locked buffer. Fix that.

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Meta Information

Published
2026-09-25
Last Modified
2026-09-25
Generated
2026-09-25
AI Q&A
2026-09-25
EPSS Evaluated
N/A
NVD
CVE-2026-97545
EUVD
EUVD-2026-86853

Affected Vendors & Products

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

Helpful Resources

Exploitability

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KEV
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CWE ID Description
CWE-UNKNOWN

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Executive Summary

This vulnerability in the Linux kernel involves a memory leak in the XFS file system. When an I/O error occurs during buffer list writing in xfs_btree_bload_prep_block, the function xfs_btree_bload_drop_buf fails to release a locked buffer called new_bp. This results in the loss of the buffer, potentially causing system instability or resource exhaustion.

Detection Guidance

This vulnerability is specific to the XFS filesystem in the Linux kernel and may not have direct network detection methods. Monitor kernel logs for XFS-related errors or IO failures during buffer operations. Check for locked buffers or memory leaks in XFS operations using kernel debugging tools like ftrace or dmesg. Example command: dmesg | grep -i xfs

Impact Analysis

This vulnerability could lead to system crashes, data corruption, or denial of service if exploited. It may cause resource leaks, reducing available memory and affecting system performance. Servers or systems relying on XFS file systems are particularly at risk.

Mitigation Strategies

Apply the latest Linux kernel patches or updates that include the fix for this XFS vulnerability. Reboot the system if necessary to ensure the patched kernel is active. Monitor system stability and XFS operations after applying updates.

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