CVE-2026-45924 (GCVE-0-2026-45924)
Vulnerability from cvelistv5
Published
2026-05-27 12:17
Modified
2026-05-27 12:17
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
Impacted products
Vendor Product Version
Linux Linux Version: 9d5012ffe14120f978ee34aef4df3d6cb026b7c4
Version: ac98d54630d5b52e3f684d872f0d82c06c418ea9
Version: 1e858a7a51c7b8b009d8f246de7ceb7743b44a71
Version: 814cfdb6358d9b84fcbec9918c8f938cc096a43a
Version: d5fc1400a34b4ea5e8f2ce296ea12bf8c8421694
Version: d5fc1400a34b4ea5e8f2ce296ea12bf8c8421694
Version: d5fc1400a34b4ea5e8f2ce296ea12bf8c8421694
Version: a7dddd62578c2eb6cb28b8835556a121b5157323
Version: a726fef6d7d4cfc365d3434e3916dbfe78991a33
Version: 5.15.190   ≤
Version: 6.1.149   ≤
Version: 6.6.103   ≤
Version: 6.12.43   ≤
Version: 6.15.11   ≤
Version: 6.16.2   ≤
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{
  "containers": {
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          "vendor": "Linux",
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              "versionType": "original_commit_for_fix"
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      ],
      "cpeApplicability": [
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              "negate": false,
              "operator": "OR"
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      "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)."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-27T12:17:43.229Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/8e3a3192ef78d8302916408d62813b1fddfc8972"
        },
        {
          "url": "https://git.kernel.org/stable/c/f221baa80e5959a0c08a7e34abbf2a4d3cf0e1c2"
        },
        {
          "url": "https://git.kernel.org/stable/c/cf29329a13df79c198b45dfc92577638d30b56fa"
        },
        {
          "url": "https://git.kernel.org/stable/c/34d6691933682f0516259a31b39d2cebcedec0a5"
        },
        {
          "url": "https://git.kernel.org/stable/c/0c578e8065c4b08d5635a4cbc0f6321df9d20f79"
        },
        {
          "url": "https://git.kernel.org/stable/c/4c38600feb81c670edb82e49d201d3d2d00cd4c3"
        },
        {
          "url": "https://git.kernel.org/stable/c/a09dc10d1353f0e92c21eae2a79af1c2b1ddcde8"
        }
      ],
      "title": "ksmbd: call ksmbd_vfs_kern_path_end_removing() on some error paths",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-45924",
    "datePublished": "2026-05-27T12:17:43.229Z",
    "dateReserved": "2026-05-13T15:03:33.086Z",
    "dateUpdated": "2026-05-27T12:17:43.229Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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