CVE-2025-68369

ntfs3: init run lock for extend inode

State: Published
Severity: 7.5 High
Published: Dec 24, 2025
Updated: Aug 5, 2026
Reserved: Dec 16, 2025

Description

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

ntfs3: init run lock for extend inode

After setting the inode mode of $Extend to a regular file, executing the truncate system call will enter the do_truncate() routine, causing the run_lock uninitialized error reported by syzbot.

Prior to patch 4e8011ffec79, if the inode mode of $Extend was not set to a regular file, the do_truncate() routine would not be entered.

Add the run_lock initialization when loading $Extend.

syzbot reported: INFO: trying to register non-static key. Call Trace: dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120 assign_lock_key+0x133/0x150 kernel/locking/lockdep.c:984 register_lock_class+0x105/0x320 kernel/locking/lockdep.c:1299 __lock_acquire+0x99/0xd20 kernel/locking/lockdep.c:5112 lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5868 down_write+0x96/0x1f0 kernel/locking/rwsem.c:1590 ntfs_set_size+0x140/0x200 fs/ntfs3/inode.c:860 ntfs_extend+0x1d9/0x970 fs/ntfs3/file.c:387 ntfs_setattr+0x2e8/0xbe0 fs/ntfs3/file.c:808

Scores

CVSS	Score	Vector	Source
3.1	7.5 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	Linux

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	63eb6730ce0604d3eacf036c2f68ea70b068317c to before 79c8a77b1782e2ace96d063be3c41ba540d1e20aAffected 78d46f5276ed3589aaaa435580068c5b62efc921 to before 433d1f7c628c3cbdd7efce064d6c7acd072cf6c4Affected 17249b2a65274f73ed68bcd1604e08a60fd8a278 to before 907bf69c6b6ce5d038eec7a599d67b45b62624bcAffected 37f65e68ba9852dc51c78dbb54a9881c3f0fe4f7 to before 6e17555728bc469d484c59db4a0abc65c19bc315Affected 57534db1bbc4ca772393bb7d92e69d5e7b9051cf to before 19164d8228317f3f1fe2662a9ba587cfe3b2d29eAffected 4e8011ffec79717e5fdac43a7e79faf811a384b7 to before ab5e8ebeee1caa4fcf8be7d8d62c0a7165469076Affected 4e8011ffec79717e5fdac43a7e79faf811a384b7 to before be99c62ac7e7af514e4b13f83c891a3cccefaa48Affected 5.15.197 to before 5.15.198Affected 6.1.159 to before 6.1.160Affected 6.6.117 to before 6.6.120Affected 6.12.58 to before 6.12.63Affected 6.17.8 to before 6.17.13Affected
LinuxLinux	6.18Affected before 6.18Not affected 5.15.198 through 5.15.Not affected 6.1.160 through 6.1.Not affected 6.6.120 through 6.6.Not affected 6.12.63 through 6.12.Not affected 6.17.13 through 6.17.Not affected 6.18.2 through 6.18.Not affected 6.19 and laterNot affected

Product

Versions

LinuxLinux

63eb6730ce0604d3eacf036c2f68ea70b068317c to before 79c8a77b1782e2ace96d063be3c41ba540d1e20aAffected
78d46f5276ed3589aaaa435580068c5b62efc921 to before 433d1f7c628c3cbdd7efce064d6c7acd072cf6c4Affected
17249b2a65274f73ed68bcd1604e08a60fd8a278 to before 907bf69c6b6ce5d038eec7a599d67b45b62624bcAffected
37f65e68ba9852dc51c78dbb54a9881c3f0fe4f7 to before 6e17555728bc469d484c59db4a0abc65c19bc315Affected
57534db1bbc4ca772393bb7d92e69d5e7b9051cf to before 19164d8228317f3f1fe2662a9ba587cfe3b2d29eAffected
4e8011ffec79717e5fdac43a7e79faf811a384b7 to before ab5e8ebeee1caa4fcf8be7d8d62c0a7165469076Affected
4e8011ffec79717e5fdac43a7e79faf811a384b7 to before be99c62ac7e7af514e4b13f83c891a3cccefaa48Affected
5.15.197 to before 5.15.198Affected
6.1.159 to before 6.1.160Affected
6.6.117 to before 6.6.120Affected
6.12.58 to before 6.12.63Affected
6.17.8 to before 6.17.13Affected

LinuxLinux

6.18Affected
before 6.18Not affected
5.15.198 through 5.15.*Not affected
6.1.160 through 6.1.*Not affected
6.6.120 through 6.6.*Not affected
6.12.63 through 6.12.*Not affected
6.17.13 through 6.17.*Not affected
6.18.2 through 6.18.*Not affected
6.19 and laterNot affected

References

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