CVE-2022-50386 (GCVE-0-2022-50386)

Vulnerability from cvelistv5 – Published: 2025-09-18 13:33 – Updated: 2026-01-14 18:53
VLAI?
Title
Bluetooth: L2CAP: Fix user-after-free
Summary
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: Fix user-after-free This uses l2cap_chan_hold_unless_zero() after calling __l2cap_get_chan_blah() to prevent the following trace: Bluetooth: l2cap_core.c:static void l2cap_chan_destroy(struct kref *kref) Bluetooth: chan 0000000023c4974d Bluetooth: parent 00000000ae861c08 ================================================================== BUG: KASAN: use-after-free in __mutex_waiter_is_first kernel/locking/mutex.c:191 [inline] BUG: KASAN: use-after-free in __mutex_lock_common kernel/locking/mutex.c:671 [inline] BUG: KASAN: use-after-free in __mutex_lock+0x278/0x400 kernel/locking/mutex.c:729 Read of size 8 at addr ffff888006a49b08 by task kworker/u3:2/389
CWE
Assigner
Impacted products
Vendor Product Version
Linux Linux Affected: 3df91ea20e744344100b10ae69a17211fcf5b207 , < 11e40d6c0823f699d8ad501e48d1c3ae4be386cd (git)
Affected: 3df91ea20e744344100b10ae69a17211fcf5b207 , < 843fc4e386dd84b806a7f07fb062d8c3a44e5364 (git)
Affected: 3df91ea20e744344100b10ae69a17211fcf5b207 , < d91fc2836562f299f34e361e089e9fe154da4f73 (git)
Affected: 3df91ea20e744344100b10ae69a17211fcf5b207 , < 7d6f9cb24d2b2f6b6370eac074e2e6b1bafdad45 (git)
Affected: 3df91ea20e744344100b10ae69a17211fcf5b207 , < 0c108cf3ad386e0084277093b55a351c49e0be27 (git)
Affected: 3df91ea20e744344100b10ae69a17211fcf5b207 , < d1e894f950ad48897d1a7cb05909ea29d8c3810e (git)
Affected: 3df91ea20e744344100b10ae69a17211fcf5b207 , < 6ffde6e03085874ae22263ff4cef4869f797e84f (git)
Affected: 3df91ea20e744344100b10ae69a17211fcf5b207 , < 15fc21695eb606bdc5d483b92118ee42610a952d (git)
Affected: 3df91ea20e744344100b10ae69a17211fcf5b207 , < 35fcbc4243aad7e7d020b7c1dfb14bb888b20a4f (git)
Create a notification for this product.
    Linux Linux Affected: 3.4
Unaffected: 0 , < 3.4 (semver)
Unaffected: 4.9.331 , ≤ 4.9.* (semver)
Unaffected: 4.14.296 , ≤ 4.14.* (semver)
Unaffected: 4.19.262 , ≤ 4.19.* (semver)
Unaffected: 5.4.220 , ≤ 5.4.* (semver)
Unaffected: 5.10.150 , ≤ 5.10.* (semver)
Unaffected: 5.15.75 , ≤ 5.15.* (semver)
Unaffected: 5.19.17 , ≤ 5.19.* (semver)
Unaffected: 6.0.3 , ≤ 6.0.* (semver)
Unaffected: 6.1 , ≤ * (original_commit_for_fix)
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Show details on NVD website

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8.0, \"attackVector\": \"ADJACENT_NETWORK\", \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\", \"integrityImpact\": \"HIGH\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"LOW\", \"confidentialityImpact\": \"HIGH\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2022-50386\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"total\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-01-14T18:49:08.856293Z\"}}}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-416\", \"description\": \"CWE-416 Use After Free\"}]}], \"providerMetadata\": {\"shortName\": \"CISA-ADP\", \"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"dateUpdated\": \"2026-01-14T18:49:04.667Z\"}, \"title\": \"CISA ADP Vulnrichment\"}]}",
      "cveMetadata": "{\"cveId\": \"CVE-2022-50386\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"state\": \"PUBLISHED\", \"assignerShortName\": \"Linux\", \"dateReserved\": \"2025-09-17T14:53:06.997Z\", \"datePublished\": \"2025-09-18T13:33:07.191Z\", \"dateUpdated\": \"2025-12-23T13:29:17.247Z\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


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Sightings

Author Source Type Date

Nomenclature

  • 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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Detection rules are retrieved from Rulezet.

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