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CVE record · CVE-2026-43134

Bluetooth: L2CAP: Fix missing key size check for L2CAP_LE_CONN_REQ

CVSS 8.1 HighEPSS 0.0012 · 1st percentile

Published by the CVE Program (CNA: Linux) at 6 May 2026, 11:27 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
VendorProductVersions
Linux Linux
  • affected 27e2d4c8d28be1d1b4ecfbffab572d7dbd35254d to before 335071c0c3637064ec250481f589075db44fe4e6 git
  • affected 27e2d4c8d28be1d1b4ecfbffab572d7dbd35254d to before fa6ad76fa8623c0a50d529cd5726fa5d819a3be4 git
  • affected 27e2d4c8d28be1d1b4ecfbffab572d7dbd35254d to before 9118601ff90b79e8df3c0c98f48ae00c1b02ecef git
  • affected 27e2d4c8d28be1d1b4ecfbffab572d7dbd35254d to before 481ea39b342c347b6ac029f3d418486280be4e45 git
  • affected 27e2d4c8d28be1d1b4ecfbffab572d7dbd35254d to before ec91078e132179b04e0c3906b599816c056ceaad git
  • affected 27e2d4c8d28be1d1b4ecfbffab572d7dbd35254d to before 96581749c7c14fbec32c35728520867929600041 git
  • affected 27e2d4c8d28be1d1b4ecfbffab572d7dbd35254d to before 8dd43f9a9323f9c01bc8246da8d81a4c783c9e97 git
  • affected 27e2d4c8d28be1d1b4ecfbffab572d7dbd35254d to before 138d7eca445ef37a0333425d269ee59900ca1104 git
Other versions: unaffected
Linux Linux
  • affected 3.14
  • unaffected before 3.14 semver
  • unaffected 5.10.252 to 5.10.*, inclusive semver
  • unaffected 5.15.202 to 5.15.*, inclusive semver
  • unaffected 6.1.165 to 6.1.*, inclusive semver
  • unaffected 6.6.128 to 6.6.*, inclusive semver
  • unaffected 6.12.75 to 6.12.*, inclusive semver
  • unaffected 6.18.16 to 6.18.*, inclusive semver
  • unaffected 6.19.6 to 6.19.*, inclusive semver
  • unaffected 7.0 to *, inclusive original_commit_for_fix
Other versions: affected
Identifiers
CVE-2026-43134
CNA
Linux
Weakness (CWE)
CWE-326
Tags
Published
6 May 2026
Updated
19 Oct 2026

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

ScoreRatingCVSSVectorSource
8.1 High 3.1 CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N CNA (Linux)
  • CISA KEV Not listed.
  • EPSS 0.0012, the 1st percentile, on 12 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 6 May 2026, 12:16 UTC Confirmed by NVD

Sources

References from the CNA

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.