CVE-2026-45924

ksmbd: call ksmbd_vfs_kern_path_end_removing() on some error paths

State: Published
Severity: Not scored
Published: May 27, 2026
Updated: May 27, 2026
Reserved: May 13, 2026

Description

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

ksmbd: call ksmbd_vfs_kern_path_end_removing() on some error paths

There are two places where ksmbd_vfs_kern_path_end_removing() needs to be called in order to balance what the corresponding successful call to ksmbd_vfs_kern_path_start_removing() has done, i.e. drop inode locks and put the taken references. Otherwise there might be potential deadlocks and unbalanced locks which are caught like:

BUG: workqueue leaked lock or atomic: kworker/5:21/0x00000000/7596 last function: handle_ksmbd_work 2 locks held by kworker/5:21/7596: #0: ffff8881051ae448 (sb_writers#3){.+.+}-{0:0}, at: ksmbd_vfs_kern_path_locked+0x142/0x660 #1: ffff888130e966c0 (&type->i_mutex_dir_key#3/1){+.+.}-{4:4}, at: ksmbd_vfs_kern_path_locked+0x17d/0x660 CPU: 5 PID: 7596 Comm: kworker/5:21 Not tainted 6.1.162-00456-gc29b353f383b #138 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.17.0-debian-1.17.0-1 04/01/2014 Workqueue: ksmbd-io handle_ksmbd_work Call Trace: <TASK> dump_stack_lvl+0x44/0x5b process_one_work.cold+0x57/0x5c worker_thread+0x82/0x600 kthread+0x153/0x190 ret_from_fork+0x22/0x30 </TASK>

Found by Linux Verification Center (linuxtesting.org).

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	9d5012ffe14120f978ee34aef4df3d6cb026b7c4 to before 8e3a3192ef78d8302916408d62813b1fddfc8972Affected ac98d54630d5b52e3f684d872f0d82c06c418ea9 to before f221baa80e5959a0c08a7e34abbf2a4d3cf0e1c2Affected 1e858a7a51c7b8b009d8f246de7ceb7743b44a71 to before cf29329a13df79c198b45dfc92577638d30b56faAffected 814cfdb6358d9b84fcbec9918c8f938cc096a43a to before 34d6691933682f0516259a31b39d2cebcedec0a5Affected d5fc1400a34b4ea5e8f2ce296ea12bf8c8421694 to before 0c578e8065c4b08d5635a4cbc0f6321df9d20f79Affected d5fc1400a34b4ea5e8f2ce296ea12bf8c8421694 to before 4c38600feb81c670edb82e49d201d3d2d00cd4c3Affected d5fc1400a34b4ea5e8f2ce296ea12bf8c8421694 to before a09dc10d1353f0e92c21eae2a79af1c2b1ddcde8Affected a7dddd62578c2eb6cb28b8835556a121b5157323Affected a726fef6d7d4cfc365d3434e3916dbfe78991a33Affected 5.15.190 to before 5.15.203Affected 6.1.149 to before 6.1.167Affected 6.6.103 to before 6.6.130Affected 6.12.43 to before 6.12.78Affected 6.15.11 to before 6.16Affected 6.16.2 to before 6.17Affected
LinuxLinux	6.17Affected before 6.17Not affected 5.15.203 through 5.15.Not affected 6.1.167 through 6.1.Not affected 6.6.130 through 6.6.Not affected 6.12.78 through 6.12.Not affected 6.18.17 through 6.18.Not affected 6.19.4 through 6.19.Not affected 7.0 and laterNot affected

Product

Versions

LinuxLinux

9d5012ffe14120f978ee34aef4df3d6cb026b7c4 to before 8e3a3192ef78d8302916408d62813b1fddfc8972Affected
ac98d54630d5b52e3f684d872f0d82c06c418ea9 to before f221baa80e5959a0c08a7e34abbf2a4d3cf0e1c2Affected
1e858a7a51c7b8b009d8f246de7ceb7743b44a71 to before cf29329a13df79c198b45dfc92577638d30b56faAffected
814cfdb6358d9b84fcbec9918c8f938cc096a43a to before 34d6691933682f0516259a31b39d2cebcedec0a5Affected
d5fc1400a34b4ea5e8f2ce296ea12bf8c8421694 to before 0c578e8065c4b08d5635a4cbc0f6321df9d20f79Affected
d5fc1400a34b4ea5e8f2ce296ea12bf8c8421694 to before 4c38600feb81c670edb82e49d201d3d2d00cd4c3Affected
d5fc1400a34b4ea5e8f2ce296ea12bf8c8421694 to before a09dc10d1353f0e92c21eae2a79af1c2b1ddcde8Affected
a7dddd62578c2eb6cb28b8835556a121b5157323Affected
a726fef6d7d4cfc365d3434e3916dbfe78991a33Affected
5.15.190 to before 5.15.203Affected
6.1.149 to before 6.1.167Affected
6.6.103 to before 6.6.130Affected
6.12.43 to before 6.12.78Affected
6.15.11 to before 6.16Affected
6.16.2 to before 6.17Affected

LinuxLinux

6.17Affected
before 6.17Not affected
5.15.203 through 5.15.*Not affected
6.1.167 through 6.1.*Not affected
6.6.130 through 6.6.*Not affected
6.12.78 through 6.12.*Not affected
6.18.17 through 6.18.*Not affected
6.19.4 through 6.19.*Not affected
7.0 and laterNot affected

References

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