CVE-2026-43134 (GCVE-0-2026-43134)

Vulnerability from cvelistv5 – Published: 2026-05-06 11:27 – Updated: 2026-05-08 12:40
VLAI?
Title
Bluetooth: L2CAP: Fix missing key size check for L2CAP_LE_CONN_REQ
Summary
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: Fix missing key size check for L2CAP_LE_CONN_REQ This adds a check for encryption key size upon receiving L2CAP_LE_CONN_REQ which is required by L2CAP/LE/CFC/BV-15-C which expects L2CAP_CR_LE_BAD_KEY_SIZE.
Severity ?
8.1 (High)
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 27e2d4c8d28be1d1b4ecfbffab572d7dbd35254d , < 335071c0c3637064ec250481f589075db44fe4e6 (git)
Affected: 27e2d4c8d28be1d1b4ecfbffab572d7dbd35254d , < fa6ad76fa8623c0a50d529cd5726fa5d819a3be4 (git)
Affected: 27e2d4c8d28be1d1b4ecfbffab572d7dbd35254d , < 9118601ff90b79e8df3c0c98f48ae00c1b02ecef (git)
Affected: 27e2d4c8d28be1d1b4ecfbffab572d7dbd35254d , < 481ea39b342c347b6ac029f3d418486280be4e45 (git)
Affected: 27e2d4c8d28be1d1b4ecfbffab572d7dbd35254d , < ec91078e132179b04e0c3906b599816c056ceaad (git)
Affected: 27e2d4c8d28be1d1b4ecfbffab572d7dbd35254d , < 96581749c7c14fbec32c35728520867929600041 (git)
Affected: 27e2d4c8d28be1d1b4ecfbffab572d7dbd35254d , < 8dd43f9a9323f9c01bc8246da8d81a4c783c9e97 (git)
Affected: 27e2d4c8d28be1d1b4ecfbffab572d7dbd35254d , < 138d7eca445ef37a0333425d269ee59900ca1104 (git)
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    Linux Linux Affected: 3.14
Unaffected: 0 , < 3.14 (semver)
Unaffected: 5.10.252 , ≤ 5.10.* (semver)
Unaffected: 5.15.202 , ≤ 5.15.* (semver)
Unaffected: 6.1.165 , ≤ 6.1.* (semver)
Unaffected: 6.6.128 , ≤ 6.6.* (semver)
Unaffected: 6.12.75 , ≤ 6.12.* (semver)
Unaffected: 6.18.16 , ≤ 6.18.* (semver)
Unaffected: 6.19.6 , ≤ 6.19.* (semver)
Unaffected: 7.0 , ≤ * (original_commit_for_fix)
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          "programFiles": [
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  }
}


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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

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.



Detection rules are retrieved from Rulezet.