CVE-2022-49305 (GCVE-0-2022-49305)
Vulnerability from cvelistv5
Published
2025-02-26 02:10
Modified
2025-05-04 08:34
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: drivers: staging: rtl8192u: Fix deadlock in ieee80211_beacons_stop() There is a deadlock in ieee80211_beacons_stop(), which is shown below: (Thread 1) | (Thread 2) | ieee80211_send_beacon() ieee80211_beacons_stop() | mod_timer() spin_lock_irqsave() //(1) | (wait a time) ... | ieee80211_send_beacon_cb() del_timer_sync() | spin_lock_irqsave() //(2) (wait timer to stop) | ... We hold ieee->beacon_lock in position (1) of thread 1 and use del_timer_sync() to wait timer to stop, but timer handler also need ieee->beacon_lock in position (2) of thread 2. As a result, ieee80211_beacons_stop() will block forever. This patch extracts del_timer_sync() from the protection of spin_lock_irqsave(), which could let timer handler to obtain the needed lock.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/042915c1bfedd684c1d98a841794ee203200571aPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/1fbe033c52480f7954c057510040fa6286c4ea25Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/66f769762f65d957f688f3258755c6ec410bf710Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/806c7b53414934ba2a39449b31fd1a038e500273Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b34cb54923a6e5ddefbaf358c85c922c6ab456e2Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b465bb2ebf666116c1ac745cb80c65154dc0d27ePatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ffc9cab7243f8151be37966301307bfd3cda2db3Patch
Impacted products
Vendor Product Version
Linux Linux Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
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{
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            "drivers/staging/rtl8192u/ieee80211/ieee80211_softmac.c"
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrivers: staging: rtl8192u: Fix deadlock in ieee80211_beacons_stop()\n\nThere is a deadlock in ieee80211_beacons_stop(), which is shown below:\n\n   (Thread 1)              |      (Thread 2)\n                           | ieee80211_send_beacon()\nieee80211_beacons_stop()   |  mod_timer()\n spin_lock_irqsave() //(1) |  (wait a time)\n ...                       | ieee80211_send_beacon_cb()\n del_timer_sync()          |  spin_lock_irqsave() //(2)\n (wait timer to stop)      |  ...\n\nWe hold ieee-\u003ebeacon_lock in position (1) of thread 1 and use\ndel_timer_sync() to wait timer to stop, but timer handler\nalso need ieee-\u003ebeacon_lock in position (2) of thread 2.\nAs a result, ieee80211_beacons_stop() will block forever.\n\nThis patch extracts del_timer_sync() from the protection of\nspin_lock_irqsave(), which could let timer handler to obtain\nthe needed lock."
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        "dateUpdated": "2025-05-04T08:34:43.932Z",
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    "dateReserved": "2025-02-26T02:08:31.535Z",
    "dateUpdated": "2025-05-04T08:34:43.932Z",
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    "nvd": "{\"cve\":{\"id\":\"CVE-2022-49305\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-02-26T07:01:07.310\",\"lastModified\":\"2025-04-14T20:06:16.737\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\ndrivers: staging: rtl8192u: Fix deadlock in ieee80211_beacons_stop()\\n\\nThere is a deadlock in ieee80211_beacons_stop(), which is shown below:\\n\\n   (Thread 1)              |      (Thread 2)\\n                           | ieee80211_send_beacon()\\nieee80211_beacons_stop()   |  mod_timer()\\n spin_lock_irqsave() //(1) |  (wait a time)\\n ...                       | ieee80211_send_beacon_cb()\\n del_timer_sync()          |  spin_lock_irqsave() //(2)\\n (wait timer to stop)      |  ...\\n\\nWe hold ieee-\u003ebeacon_lock in position (1) of thread 1 and use\\ndel_timer_sync() to wait timer to stop, but timer handler\\nalso need ieee-\u003ebeacon_lock in position (2) of thread 2.\\nAs a result, ieee80211_beacons_stop() will block forever.\\n\\nThis patch extracts del_timer_sync() from the protection of\\nspin_lock_irqsave(), which could let timer handler to obtain\\nthe needed lock.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: drivers: staging: rtl8192u: Corregir bloqueo en ieee80211_beacons_stop() Hay un bloqueo en ieee80211_beacons_stop(), que se muestra a continuaci\u00f3n: (Hilo 1) | (Hilo 2) | ieee80211_send_beacon() ieee80211_beacons_stop() | mod_timer() spin_lock_irqsave() //(1) | (esperar un tiempo) ... | ieee80211_send_beacon_cb() del_timer_sync() | spin_lock_irqsave() //(2) (esperar a que el temporizador se detenga) | ... Mantenemos ieee-\u0026gt;beacon_lock en la posici\u00f3n (1) del hilo 1 y usamos del_timer_sync() para esperar a que el temporizador se detenga, pero el controlador del temporizador tambi\u00e9n necesita ieee-\u0026gt;beacon_lock en la posici\u00f3n (2) del hilo 2. Como resultado, ieee80211_beacons_stop() se bloquear\u00e1 para siempre. Este parche extrae del_timer_sync() de la protecci\u00f3n de spin_lock_irqsave(), lo que podr\u00eda permitir que el controlador del temporizador obtenga el bloqueo necesario.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-667\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"4.19.247\",\"matchCriteriaId\":\"D050F8AE-EE13-436A-B863-56AD3787ECFB\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.20\",\"versionEndExcluding\":\"5.4.198\",\"matchCriteriaId\":\"3EC49633-14DE-4EBD-BB80-76AE2E3EABB9\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.5\",\"versionEndExcluding\":\"5.10.122\",\"matchCriteriaId\":\"1B42AA01-44D8-4572-95E6-FF8E374CF9C5\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.11\",\"versionEndExcluding\":\"5.15.47\",\"matchCriteriaId\":\"FC042EE3-4864-4325-BE0B-4BCDBF11AA61\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16\",\"versionEndExcluding\":\"5.17.15\",\"matchCriteriaId\":\"53E7AA2E-2FB4-45CA-A22B-08B4EDBB51AD\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.18\",\"versionEndExcluding\":\"5.18.4\",\"matchCriteriaId\":\"FA6D643C-6D6A-4821-8A8D-B5776B8F0103\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/042915c1bfedd684c1d98a841794ee203200571a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/1fbe033c52480f7954c057510040fa6286c4ea25\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/66f769762f65d957f688f3258755c6ec410bf710\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/806c7b53414934ba2a39449b31fd1a038e500273\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/b34cb54923a6e5ddefbaf358c85c922c6ab456e2\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/b465bb2ebf666116c1ac745cb80c65154dc0d27e\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/ffc9cab7243f8151be37966301307bfd3cda2db3\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}"
  }
}


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