{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-43134", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-05-01T14:12:55.988Z", "datePublished": "2026-05-06T11:27:21.541Z", "dateUpdated": "2026-05-06T11:27:21.541Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-06T11:27:21.541Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: L2CAP: Fix missing key size check for L2CAP_LE_CONN_REQ\n\nThis adds a check for encryption key size upon receiving\nL2CAP_LE_CONN_REQ which is required by L2CAP/LE/CFC/BV-15-C which\nexpects L2CAP_CR_LE_BAD_KEY_SIZE."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/bluetooth/l2cap_core.c"], "versions": [{"version": "27e2d4c8d28be1d1b4ecfbffab572d7dbd35254d", "lessThan": "335071c0c3637064ec250481f589075db44fe4e6", "status": "affected", "versionType": "git"}, {"version": "27e2d4c8d28be1d1b4ecfbffab572d7dbd35254d", "lessThan": "fa6ad76fa8623c0a50d529cd5726fa5d819a3be4", "status": "affected", "versionType": "git"}, {"version": "27e2d4c8d28be1d1b4ecfbffab572d7dbd35254d", "lessThan": "9118601ff90b79e8df3c0c98f48ae00c1b02ecef", "status": "affected", "versionType": "git"}, {"version": "27e2d4c8d28be1d1b4ecfbffab572d7dbd35254d", "lessThan": "481ea39b342c347b6ac029f3d418486280be4e45", "status": "affected", "versionType": "git"}, {"version": "27e2d4c8d28be1d1b4ecfbffab572d7dbd35254d", "lessThan": "ec91078e132179b04e0c3906b599816c056ceaad", "status": "affected", "versionType": "git"}, {"version": "27e2d4c8d28be1d1b4ecfbffab572d7dbd35254d", "lessThan": "96581749c7c14fbec32c35728520867929600041", "status": "affected", "versionType": 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"versionEndExcluding": "6.1.165"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.14", "versionEndExcluding": "6.6.128"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.14", "versionEndExcluding": "6.12.75"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.14", "versionEndExcluding": "6.18.16"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.14", "versionEndExcluding": "6.19.6"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.14", "versionEndExcluding": "7.0"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/335071c0c3637064ec250481f589075db44fe4e6"}, {"url": "https://git.kernel.org/stable/c/fa6ad76fa8623c0a50d529cd5726fa5d819a3be4"}, {"url": "https://git.kernel.org/stable/c/9118601ff90b79e8df3c0c98f48ae00c1b02ecef"}, {"url": "https://git.kernel.org/stable/c/481ea39b342c347b6ac029f3d418486280be4e45"}, {"url": "https://git.kernel.org/stable/c/ec91078e132179b04e0c3906b599816c056ceaad"}, {"url": "https://git.kernel.org/stable/c/96581749c7c14fbec32c35728520867929600041"}, {"url": "https://git.kernel.org/stable/c/8dd43f9a9323f9c01bc8246da8d81a4c783c9e97"}, {"url": "https://git.kernel.org/stable/c/138d7eca445ef37a0333425d269ee59900ca1104"}], "title": "Bluetooth: L2CAP: Fix missing key size check for L2CAP_LE_CONN_REQ", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: L2CAP: Fix missing key size check for L2CAP_LE_CONN_REQ\n\nThis adds a check for encryption key size upon receiving\nL2CAP_LE_CONN_REQ which is required by L2CAP/LE/CFC/BV-15-C which\nexpects L2CAP_CR_LE_BAD_KEY_SIZE."}], "id": "CVE-2026-43134", "lastModified": "2026-05-06T13:07:51.607", "metrics": {}, "published": "2026-05-06T12:16:30.617", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/138d7eca445ef37a0333425d269ee59900ca1104"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/335071c0c3637064ec250481f589075db44fe4e6"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/481ea39b342c347b6ac029f3d418486280be4e45"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/8dd43f9a9323f9c01bc8246da8d81a4c783c9e97"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/9118601ff90b79e8df3c0c98f48ae00c1b02ecef"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/96581749c7c14fbec32c35728520867929600041"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/ec91078e132179b04e0c3906b599816c056ceaad"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/fa6ad76fa8623c0a50d529cd5726fa5d819a3be4"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Awaiting Analysis"}

{"bugzilla": {"description": "kernel: Bluetooth: L2CAP: Fix missing key size check for L2CAP_LE_CONN_REQ", "id": "2467112", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2467112"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.0", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-1284", "details": ["A flaw was found in the Linux kernel's Bluetooth Low Energy (LE) Logical Link Control and Adaptation Protocol (L2CAP). A missing check for encryption key size when processing connection requests could allow a remote attacker to send a malformed request. This could lead to a protocol violation, potentially causing the system to enter an unexpected state or result in a denial of service."], "name": "CVE-2026-43134", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-05-06T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-43134\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-43134\nhttps://lore.kernel.org/linux-cve-announce/2026050622-CVE-2026-43134-ce6b@gregkh/T"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[27e2d4c8d28be1d1b4ecfbffab572d7dbd35254d,335071c0c3637064ec250481f589075db44fe4e6)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[27e2d4c8d28be1d1b4ecfbffab572d7dbd35254d,fa6ad76fa8623c0a50d529cd5726fa5d819a3be4)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[27e2d4c8d28be1d1b4ecfbffab572d7dbd35254d,9118601ff90b79e8df3c0c98f48ae00c1b02ecef)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[27e2d4c8d28be1d1b4ecfbffab572d7dbd35254d,481ea39b342c347b6ac029f3d418486280be4e45)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[27e2d4c8d28be1d1b4ecfbffab572d7dbd35254d,ec91078e132179b04e0c3906b599816c056ceaad)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[27e2d4c8d28be1d1b4ecfbffab572d7dbd35254d,96581749c7c14fbec32c35728520867929600041)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[27e2d4c8d28be1d1b4ecfbffab572d7dbd35254d,8dd43f9a9323f9c01bc8246da8d81a4c783c9e97)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[27e2d4c8d28be1d1b4ecfbffab572d7dbd35254d,138d7eca445ef37a0333425d269ee59900ca1104)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "3.14"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,3.14)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[5.10.252,5.11.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[5.15.202,5.16.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.1.165,6.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.128,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.75,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.16,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.19.6,6.20.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.0,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-05-06T15:15:07.753999+00:00", "updated": "2026-05-07T04:30:21.274675+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}