FKIE_CVE-2026-45924

Vulnerability from fkie_nvd - Published: 2026-05-27 14:17 - Updated: 2026-05-27 14:48
Severity
Summary
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).
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0c578e8065c4b08d5635a4cbc0f6321df9d20f79
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/34d6691933682f0516259a31b39d2cebcedec0a5
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/4c38600feb81c670edb82e49d201d3d2d00cd4c3
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8e3a3192ef78d8302916408d62813b1fddfc8972
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a09dc10d1353f0e92c21eae2a79af1c2b1ddcde8
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/cf29329a13df79c198b45dfc92577638d30b56fa
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f221baa80e5959a0c08a7e34abbf2a4d3cf0e1c2
Impacted products
Vendor Product Version
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{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nksmbd: call ksmbd_vfs_kern_path_end_removing() on some error paths\n\nThere are two places where ksmbd_vfs_kern_path_end_removing() needs to be\ncalled in order to balance what the corresponding successful call to\nksmbd_vfs_kern_path_start_removing() has done, i.e. drop inode locks and\nput the taken references.  Otherwise there might be potential deadlocks\nand unbalanced locks which are caught like:\n\nBUG: workqueue leaked lock or atomic: kworker/5:21/0x00000000/7596\n     last function: handle_ksmbd_work\n2 locks held by kworker/5:21/7596:\n #0: ffff8881051ae448 (sb_writers#3){.+.+}-{0:0}, at: ksmbd_vfs_kern_path_locked+0x142/0x660\n #1: ffff888130e966c0 (\u0026type-\u003ei_mutex_dir_key#3/1){+.+.}-{4:4}, at: ksmbd_vfs_kern_path_locked+0x17d/0x660\nCPU: 5 PID: 7596 Comm: kworker/5:21 Not tainted 6.1.162-00456-gc29b353f383b #138\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.17.0-debian-1.17.0-1 04/01/2014\nWorkqueue: ksmbd-io handle_ksmbd_work\nCall Trace:\n \u003cTASK\u003e\n dump_stack_lvl+0x44/0x5b\n process_one_work.cold+0x57/0x5c\n worker_thread+0x82/0x600\n kthread+0x153/0x190\n ret_from_fork+0x22/0x30\n \u003c/TASK\u003e\n\nFound by Linux Verification Center (linuxtesting.org)."
    }
  ],
  "id": "CVE-2026-45924",
  "lastModified": "2026-05-27T14:48:03.013",
  "metrics": {},
  "published": "2026-05-27T14:17:07.413",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/0c578e8065c4b08d5635a4cbc0f6321df9d20f79"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/34d6691933682f0516259a31b39d2cebcedec0a5"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/4c38600feb81c670edb82e49d201d3d2d00cd4c3"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/8e3a3192ef78d8302916408d62813b1fddfc8972"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/a09dc10d1353f0e92c21eae2a79af1c2b1ddcde8"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/cf29329a13df79c198b45dfc92577638d30b56fa"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/f221baa80e5959a0c08a7e34abbf2a4d3cf0e1c2"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}


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