{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-43018","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-05-01T14:12:55.975Z","datePublished":"2026-05-01T14:15:22.308Z","dateUpdated":"2026-05-11T22:16:07.005Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-05-11T22:16:07.005Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: hci_event: fix potential UAF in hci_le_remote_conn_param_req_evt\n\nhci_conn lookup and field access must be covered by hdev lock in\nhci_le_remote_conn_param_req_evt, otherwise it's possible it is freed\nconcurrently.\n\nExtend the hci_dev_lock critical section to cover all conn usage."}],"metrics":[{"cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","baseScore":8.8,"baseSeverity":"HIGH"}}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/bluetooth/hci_event.c"],"versions":[{"version":"95118dd4edfec950898a00180c6f998df0a6406d","lessThan":"59eecf0ffde15670e6a5e10c47be67f73d843b20","status":"affected","versionType":"git"},{"version":"95118dd4edfec950898a00180c6f998df0a6406d","lessThan":"5fb69e1eeea9d6cba80517e9f058b56b34bc3a81","status":"affected","versionType":"git"},{"version":"95118dd4edfec950898a00180c6f998df0a6406d","lessThan":"7cadb03be37e761130edb153544fe0770a842b19","status":"affected","versionType":"git"},{"version":"95118dd4edfec950898a00180c6f998df0a6406d","lessThan":"1d0bdbfe3e91c11f0a704c52443a9446a10d699c","status":"affected","versionType":"git"},{"version":"95118dd4edfec950898a00180c6f998df0a6406d","lessThan":"ea3cd36d7382d5f8309df04c275d20df139ed42c","status":"affected","versionType":"git"},{"version":"95118dd4edfec950898a00180c6f998df0a6406d","lessThan":"b255531b27da336571411248c2a72a350662bd09","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/bluetooth/hci_event.c"],"versions":[{"version":"5.17","status":"affected"},{"version":"0","lessThan":"5.17","status":"unaffected","versionType":"semver"},{"version":"6.1.168","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.134","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.81","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.22","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"6.19.12","lessThanOrEqual":"6.19.*","status":"unaffected","versionType":"semver"},{"version":"7.0","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.17","versionEndExcluding":"6.1.168"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.17","versionEndExcluding":"6.6.134"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.17","versionEndExcluding":"6.12.81"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.17","versionEndExcluding":"6.18.22"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.17","versionEndExcluding":"6.19.12"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.17","versionEndExcluding":"7.0"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/59eecf0ffde15670e6a5e10c47be67f73d843b20"},{"url":"https://git.kernel.org/stable/c/5fb69e1eeea9d6cba80517e9f058b56b34bc3a81"},{"url":"https://git.kernel.org/stable/c/7cadb03be37e761130edb153544fe0770a842b19"},{"url":"https://git.kernel.org/stable/c/1d0bdbfe3e91c11f0a704c52443a9446a10d699c"},{"url":"https://git.kernel.org/stable/c/ea3cd36d7382d5f8309df04c275d20df139ed42c"},{"url":"https://git.kernel.org/stable/c/b255531b27da336571411248c2a72a350662bd09"}],"title":"Bluetooth: hci_event: fix potential UAF in hci_le_remote_conn_param_req_evt","x_generator":{"engine":"bippy-1.2.0"}}}}