CVE-2022-49313 (GCVE-0-2022-49313)

Vulnerability from cvelistv5 – Published: 2025-02-26 02:10 – Updated: 2026-05-11 18:57
VLAI?
Title
drivers: usb: host: Fix deadlock in oxu_bus_suspend()
Summary
In the Linux kernel, the following vulnerability has been resolved: drivers: usb: host: Fix deadlock in oxu_bus_suspend() There is a deadlock in oxu_bus_suspend(), which is shown below: (Thread 1) | (Thread 2) | timer_action() oxu_bus_suspend() | mod_timer() spin_lock_irq() //(1) | (wait a time) ... | oxu_watchdog() del_timer_sync() | spin_lock_irq() //(2) (wait timer to stop) | ... We hold oxu->lock in position (1) of thread 1, and use del_timer_sync() to wait timer to stop, but timer handler also need oxu->lock in position (2) of thread 2. As a result, oxu_bus_suspend() will block forever. This patch extracts del_timer_sync() from the protection of spin_lock_irq(), which could let timer handler to obtain the needed lock.
Severity ?
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: b92a78e582b1a45649143dc86e526f5824092478 , < 9b58d255f27b0ed6a2e43208960864d67579db58 (git)
Affected: b92a78e582b1a45649143dc86e526f5824092478 , < a3d380188bde8900c3f604e82b56572896499124 (git)
Affected: b92a78e582b1a45649143dc86e526f5824092478 , < f8242044c91cafbba9e320b0fb31abf2429a3221 (git)
Affected: b92a78e582b1a45649143dc86e526f5824092478 , < 2dcec0bc142be2096af71a5703d63237127db204 (git)
Affected: b92a78e582b1a45649143dc86e526f5824092478 , < ffe9440d698274c6462d2e304562c6ddfc8c84df (git)
Affected: b92a78e582b1a45649143dc86e526f5824092478 , < d888753872190abd18f68a7d77b9c7c367f0a7ab (git)
Affected: b92a78e582b1a45649143dc86e526f5824092478 , < 4187b291a76664a3c03d3f0d9bfadc8322881868 (git)
Affected: b92a78e582b1a45649143dc86e526f5824092478 , < b97aae8b43b718314012e8170b7e03dbfd2e7677 (git)
Affected: b92a78e582b1a45649143dc86e526f5824092478 , < 4d378f2ae58138d4c55684e1d274e7dd94aa6524 (git)
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    Linux Linux Affected: 2.6.29
Unaffected: 0 , < 2.6.29 (semver)
Unaffected: 4.9.318 , ≤ 4.9.* (semver)
Unaffected: 4.14.283 , ≤ 4.14.* (semver)
Unaffected: 4.19.247 , ≤ 4.19.* (semver)
Unaffected: 5.4.198 , ≤ 5.4.* (semver)
Unaffected: 5.10.122 , ≤ 5.10.* (semver)
Unaffected: 5.15.47 , ≤ 5.15.* (semver)
Unaffected: 5.17.15 , ≤ 5.17.* (semver)
Unaffected: 5.18.4 , ≤ 5.18.* (semver)
Unaffected: 5.19 , ≤ * (original_commit_for_fix)
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrivers: usb: host: Fix deadlock in oxu_bus_suspend()\n\nThere is a deadlock in oxu_bus_suspend(), which is shown below:\n\n   (Thread 1)              |      (Thread 2)\n                           | timer_action()\noxu_bus_suspend()          |  mod_timer()\n spin_lock_irq() //(1)     |  (wait a time)\n ...                       | oxu_watchdog()\n del_timer_sync()          |  spin_lock_irq() //(2)\n (wait timer to stop)      |  ...\n\nWe hold oxu-\u003elock in position (1) of thread 1, and use\ndel_timer_sync() to wait timer to stop, but timer handler\nalso need oxu-\u003elock in position (2) of thread 2. As a result,\noxu_bus_suspend() will block forever.\n\nThis patch extracts del_timer_sync() from the protection of\nspin_lock_irq(), which could let timer handler to obtain\nthe needed lock."
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  • 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.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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