CVE-2026-99102

ntfs: take invalidate_lock in ntfs_setattr_size()

Published Oct 28, 2026 CVSS 3.1 · 3.3 Low EPSS < 1% KEV · Not listed
Description
In the Linux kernel, the following vulnerability has been resolved:

ntfs: take invalidate_lock in ntfs_setattr_size()

ntfs_setattr_size() updates i_size and resizes the on-disk attribute
without holding mapping->invalidate_lock. Page faults take the lock
shared, so a fault racing the resize can resolve a VCN against the
transient runlist state of ntfs_non_resident_attr_expand() and fail
with a spurious SIGBUS, and can interleave with the size-change
epilogue (truncate_pagecache(), i_size_write(),
pagecache_isize_extended()).

Take invalidate_lock exclusively around the whole resize after
inode_dio_wait(), matching the fallocate path and other filesystems
such as xfs, which wraps truncate in its mmaplock (= invalidate_lock).

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Weaknesses CWE-413
References
Metrics threat_severity

None

cvssV3_1

{'score': 3.3, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L'}

threat_severity

Low

Type Values Removed Values Added
First Time appeared Linux linux
Vendors & Products Linux linux
Type Values Removed Values Added
Weaknesses CWE-362
Type Values Removed Values Added
Description In the Linux kernel, the following vulnerability has been resolved: ntfs: take invalidate_lock in ntfs_setattr_size() ntfs_setattr_size() updates i_size and resizes the on-disk attribute without holding mapping->invalidate_lock. Page faults take the lock shared, so a fault racing the resize can resolve a VCN against the transient runlist state of ntfs_non_resident_attr_expand() and fail with a spurious SIGBUS, and can interleave with the size-change epilogue (truncate_pagecache(), i_size_write(), pagecache_isize_extended()). Take invalidate_lock exclusively around the whole resize after inode_dio_wait(), matching the fallocate path and other filesystems such as xfs, which wraps truncate in its mmaplock (= invalidate_lock).
Title ntfs: take invalidate_lock in ntfs_setattr_size()
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
Linux
Published
Updated
Oct 28, 2026, 10:34 AM
Reserved
Sep 25, 2026, 10:25 AM
Status
Received
Published
Oct 28, 2026, 11:17 AM
Modified
Oct 28, 2026, 11:17 AM
Severity
Low
Public date
Oct 28, 2026, 12:00 AM