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).

Metrics

CVSS 3.1 5.5/10CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-667

Affected software

Source: the vendor's advisory (CNA). NVD analysis pending.

Vendor	Product	Versions
Linux	Linux	>= 9d5012ffe14120f978ee34aef4df3d6cb026b7c4, < 8e3a3192ef78d8302916408d62813b1fddfc8972; >= ac98d54630d5b52e3f684d872f0d82c06c418ea9, < f221baa80e5959a0c08a7e34abbf2a4d3cf0e1c2; >= 1e858a7a51c7b8b009d8f246de7ceb7743b44a71, < cf29329a13df79c198b45dfc92577638d30b56fa; >= 814cfdb6358d9b84fcbec9918c8f938cc096a43a, < 34d6691933682f0516259a31b39d2cebcedec0a5; >= d5fc1400a34b4ea5e8f2ce296ea12bf8c8421694, < 0c578e8065c4b08d5635a4cbc0f6321df9d20f79; >= d5fc1400a34b4ea5e8f2ce296ea12bf8c8421694, < 4c38600feb81c670edb82e49d201d3d2d00cd4c3; >= d5fc1400a34b4ea5e8f2ce296ea12bf8c8421694, < a09dc10d1353f0e92c21eae2a79af1c2b1ddcde8; a7dddd62578c2eb6cb28b8835556a121b5157323; a726fef6d7d4cfc365d3434e3916dbfe78991a33; >= 5.15.190, < 5.15.203; >= 6.1.149, < 6.1.167; >= 6.6.103, < 6.6.130; >= 6.12.43, < 6.12.78; >= 6.15.11, < 6.16; >= 6.16.2, < 6.17
Linux	Linux	6.17

References

Timeline

Published: May 27, 2026
Last modified: Jun 24, 2026
NVD status: Undergoing Analysis

CVE-2026-45924