CVE-2022-49936 (GCVE-0-2022-49936)

Vulnerability from cvelistv5 – Published: 2025-06-18 10:54 – Updated: 2025-12-23 13:26
VLAI?
Title
USB: core: Prevent nested device-reset calls
Summary
In the Linux kernel, the following vulnerability has been resolved: USB: core: Prevent nested device-reset calls Automatic kernel fuzzing revealed a recursive locking violation in usb-storage: ============================================ WARNING: possible recursive locking detected 5.18.0 #3 Not tainted -------------------------------------------- kworker/1:3/1205 is trying to acquire lock: ffff888018638db8 (&us_interface_key[i]){+.+.}-{3:3}, at: usb_stor_pre_reset+0x35/0x40 drivers/usb/storage/usb.c:230 but task is already holding lock: ffff888018638db8 (&us_interface_key[i]){+.+.}-{3:3}, at: usb_stor_pre_reset+0x35/0x40 drivers/usb/storage/usb.c:230 ... stack backtrace: CPU: 1 PID: 1205 Comm: kworker/1:3 Not tainted 5.18.0 #3 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.13.0-1ubuntu1.1 04/01/2014 Workqueue: usb_hub_wq hub_event Call Trace: <TASK> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106 print_deadlock_bug kernel/locking/lockdep.c:2988 [inline] check_deadlock kernel/locking/lockdep.c:3031 [inline] validate_chain kernel/locking/lockdep.c:3816 [inline] __lock_acquire.cold+0x152/0x3ca kernel/locking/lockdep.c:5053 lock_acquire kernel/locking/lockdep.c:5665 [inline] lock_acquire+0x1ab/0x520 kernel/locking/lockdep.c:5630 __mutex_lock_common kernel/locking/mutex.c:603 [inline] __mutex_lock+0x14f/0x1610 kernel/locking/mutex.c:747 usb_stor_pre_reset+0x35/0x40 drivers/usb/storage/usb.c:230 usb_reset_device+0x37d/0x9a0 drivers/usb/core/hub.c:6109 r871xu_dev_remove+0x21a/0x270 drivers/staging/rtl8712/usb_intf.c:622 usb_unbind_interface+0x1bd/0x890 drivers/usb/core/driver.c:458 device_remove drivers/base/dd.c:545 [inline] device_remove+0x11f/0x170 drivers/base/dd.c:537 __device_release_driver drivers/base/dd.c:1222 [inline] device_release_driver_internal+0x1a7/0x2f0 drivers/base/dd.c:1248 usb_driver_release_interface+0x102/0x180 drivers/usb/core/driver.c:627 usb_forced_unbind_intf+0x4d/0xa0 drivers/usb/core/driver.c:1118 usb_reset_device+0x39b/0x9a0 drivers/usb/core/hub.c:6114 This turned out not to be an error in usb-storage but rather a nested device reset attempt. That is, as the rtl8712 driver was being unbound from a composite device in preparation for an unrelated USB reset (that driver does not have pre_reset or post_reset callbacks), its ->remove routine called usb_reset_device() -- thus nesting one reset call within another. Performing a reset as part of disconnect processing is a questionable practice at best. However, the bug report points out that the USB core does not have any protection against nested resets. Adding a reset_in_progress flag and testing it will prevent such errors in the future.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 78d9a487ee961c356e1a934d9a92eca38ffb3a70 , < d90419b8b8322b6924f6da9da952647f2dadc21b (git)
Affected: 78d9a487ee961c356e1a934d9a92eca38ffb3a70 , < 1b29498669914c7f9afb619722421418a753d372 (git)
Affected: 78d9a487ee961c356e1a934d9a92eca38ffb3a70 , < cc9a12e12808af178c600cc485338bac2e37d2a8 (git)
Affected: 78d9a487ee961c356e1a934d9a92eca38ffb3a70 , < df1875084898b15cbc42f712e93d7f113ae6271b (git)
Affected: 78d9a487ee961c356e1a934d9a92eca38ffb3a70 , < abe3cfb7a7c8e907b312c7dbd7bf4d142b745aa8 (git)
Affected: 78d9a487ee961c356e1a934d9a92eca38ffb3a70 , < c548b99e1c37db6f7df86ecfe9a1f895d6c5966e (git)
Affected: 78d9a487ee961c356e1a934d9a92eca38ffb3a70 , < d5eb850b3e8836197a38475840725260b9783e94 (git)
Affected: 78d9a487ee961c356e1a934d9a92eca38ffb3a70 , < 9c6d778800b921bde3bff3cff5003d1650f942d1 (git)
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    Linux Linux Affected: 2.6.27
Unaffected: 0 , < 2.6.27 (semver)
Unaffected: 4.9.328 , ≤ 4.9.* (semver)
Unaffected: 4.14.293 , ≤ 4.14.* (semver)
Unaffected: 4.19.258 , ≤ 4.19.* (semver)
Unaffected: 5.4.213 , ≤ 5.4.* (semver)
Unaffected: 5.10.142 , ≤ 5.10.* (semver)
Unaffected: 5.15.66 , ≤ 5.15.* (semver)
Unaffected: 5.19.8 , ≤ 5.19.* (semver)
Unaffected: 6.0 , ≤ * (original_commit_for_fix)
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{
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          "product": "Linux",
          "programFiles": [
            "drivers/usb/core/hub.c",
            "include/linux/usb.h"
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      "cpeApplicability": [
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nUSB: core: Prevent nested device-reset calls\n\nAutomatic kernel fuzzing revealed a recursive locking violation in\nusb-storage:\n\n============================================\nWARNING: possible recursive locking detected\n5.18.0 #3 Not tainted\n--------------------------------------------\nkworker/1:3/1205 is trying to acquire lock:\nffff888018638db8 (\u0026us_interface_key[i]){+.+.}-{3:3}, at:\nusb_stor_pre_reset+0x35/0x40 drivers/usb/storage/usb.c:230\n\nbut task is already holding lock:\nffff888018638db8 (\u0026us_interface_key[i]){+.+.}-{3:3}, at:\nusb_stor_pre_reset+0x35/0x40 drivers/usb/storage/usb.c:230\n\n...\n\nstack backtrace:\nCPU: 1 PID: 1205 Comm: kworker/1:3 Not tainted 5.18.0 #3\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS\n1.13.0-1ubuntu1.1 04/01/2014\nWorkqueue: usb_hub_wq hub_event\nCall Trace:\n\u003cTASK\u003e\n__dump_stack lib/dump_stack.c:88 [inline]\ndump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106\nprint_deadlock_bug kernel/locking/lockdep.c:2988 [inline]\ncheck_deadlock kernel/locking/lockdep.c:3031 [inline]\nvalidate_chain kernel/locking/lockdep.c:3816 [inline]\n__lock_acquire.cold+0x152/0x3ca kernel/locking/lockdep.c:5053\nlock_acquire kernel/locking/lockdep.c:5665 [inline]\nlock_acquire+0x1ab/0x520 kernel/locking/lockdep.c:5630\n__mutex_lock_common kernel/locking/mutex.c:603 [inline]\n__mutex_lock+0x14f/0x1610 kernel/locking/mutex.c:747\nusb_stor_pre_reset+0x35/0x40 drivers/usb/storage/usb.c:230\nusb_reset_device+0x37d/0x9a0 drivers/usb/core/hub.c:6109\nr871xu_dev_remove+0x21a/0x270 drivers/staging/rtl8712/usb_intf.c:622\nusb_unbind_interface+0x1bd/0x890 drivers/usb/core/driver.c:458\ndevice_remove drivers/base/dd.c:545 [inline]\ndevice_remove+0x11f/0x170 drivers/base/dd.c:537\n__device_release_driver drivers/base/dd.c:1222 [inline]\ndevice_release_driver_internal+0x1a7/0x2f0 drivers/base/dd.c:1248\nusb_driver_release_interface+0x102/0x180 drivers/usb/core/driver.c:627\nusb_forced_unbind_intf+0x4d/0xa0 drivers/usb/core/driver.c:1118\nusb_reset_device+0x39b/0x9a0 drivers/usb/core/hub.c:6114\n\nThis turned out not to be an error in usb-storage but rather a nested\ndevice reset attempt.  That is, as the rtl8712 driver was being\nunbound from a composite device in preparation for an unrelated USB\nreset (that driver does not have pre_reset or post_reset callbacks),\nits -\u003eremove routine called usb_reset_device() -- thus nesting one\nreset call within another.\n\nPerforming a reset as part of disconnect processing is a questionable\npractice at best.  However, the bug report points out that the USB\ncore does not have any protection against nested resets.  Adding a\nreset_in_progress flag and testing it will prevent such errors in the\nfuture."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-12-23T13:26:07.709Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/d90419b8b8322b6924f6da9da952647f2dadc21b"
        },
        {
          "url": "https://git.kernel.org/stable/c/1b29498669914c7f9afb619722421418a753d372"
        },
        {
          "url": "https://git.kernel.org/stable/c/cc9a12e12808af178c600cc485338bac2e37d2a8"
        },
        {
          "url": "https://git.kernel.org/stable/c/df1875084898b15cbc42f712e93d7f113ae6271b"
        },
        {
          "url": "https://git.kernel.org/stable/c/abe3cfb7a7c8e907b312c7dbd7bf4d142b745aa8"
        },
        {
          "url": "https://git.kernel.org/stable/c/c548b99e1c37db6f7df86ecfe9a1f895d6c5966e"
        },
        {
          "url": "https://git.kernel.org/stable/c/d5eb850b3e8836197a38475840725260b9783e94"
        },
        {
          "url": "https://git.kernel.org/stable/c/9c6d778800b921bde3bff3cff5003d1650f942d1"
        }
      ],
      "title": "USB: core: Prevent nested device-reset calls",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-49936",
    "datePublished": "2025-06-18T10:54:37.889Z",
    "dateReserved": "2025-05-01T14:05:17.255Z",
    "dateUpdated": "2025-12-23T13:26:07.709Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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