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CVE-2026-99102unknown

ntfs: take invalidate_lock in ntfs_setattr_size()

Impact

In the Linux kernel, the following vulnerability has been resolved:

Source excerpt · Linux

Affected packages

This source has no supported package-version data for matching. You can read the advisory here, but this record alone cannot power a dependency check.

Affected products

Vendor version evidence. Product records are separate from automatic dependency matching.

Linux · Linux

Other versions: unaffected

Version / rangeSource status
9c87959601e80b39a45250e362e6ddfec17cb0fa to before f0b0738ba95731eeafd11352c74f8b48951f67dcaffected
9c87959601e80b39a45250e362e6ddfec17cb0fa to before 9cc5761b8f28f9cef72061094eb5e37e2cd44d97affected
Linux version evidence

Linux · Linux

Other versions: affected

Version / rangeSource status
7.1affected
0 to before 7.1unaffected
7.2.13 through 7.2.* (inclusive)unaffected
7.3 through * (inclusive)unaffected
Linux version evidence

Original source 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).

References