{"id":"CVE-2026-53364","state":"PUBLISHED","title":"Bluetooth: hci_conn: Fix memory leak in hci_le_big_terminate()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: hci_conn: Fix memory leak in hci_le_big_terminate()\n\nhci_le_big_terminate() allocates iso_list_data via kzalloc_obj but\nreturns 0 without freeing it when neither pa_sync_term nor big_sync_term\nflags are set after evaluating the PA and BIG sync connection state.\n\nThis early-return path was introduced when hci_le_big_terminate() was\nrefactored to take struct hci_conn instead of raw u8 parameters, adding\nPA/BIG flag evaluation logic. The existing kfree() on hci_cmd_sync_queue\nfailure does not cover this path.","publishedAt":"2026-07-13T17:33:52.302Z","updatedAt":"2026-08-03T09:32:35.820Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"a8444cca514edd4e47e322926b10516a5a6d7016","status":"affected","lessThan":"488e808e3fa53200f3ef3324c45fcba4ae9f4972","versionType":"git"},{"version":"a7bcffc673de219af2698fbb90627016233de67b","status":"affected","lessThan":"e6b78019664dfe37c3dc707f50e7b453d6c7726d","versionType":"git"},{"version":"a7bcffc673de219af2698fbb90627016233de67b","status":"affected","lessThan":"a59d4f4217e6200ca9180643e5738a87d3fa8be0","versionType":"git"},{"version":"a7bcffc673de219af2698fbb90627016233de67b","status":"affected","lessThan":"bfa9d28960ed677d556bdf097073bc3129686229","versionType":"git"},{"version":"087812a6119b4cd5c9d658b48aee40a25707a1c6","status":"affected","versionType":"git"},{"version":"6.16.4","status":"affected","lessThan":"6.17","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/bluetooth/hci_conn.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.17","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.17","versionType":"semver"},{"version":"6.18.35","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.0.12","status":"unaffected","lessThanOrEqual":"7.0.*","versionType":"semver"},{"version":"7.1","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/bluetooth/hci_conn.c"]}],"references":["https://git.kernel.org/stable/c/488e808e3fa53200f3ef3324c45fcba4ae9f4972","https://git.kernel.org/stable/c/e6b78019664dfe37c3dc707f50e7b453d6c7726d","https://git.kernel.org/stable/c/a59d4f4217e6200ca9180643e5738a87d3fa8be0","https://git.kernel.org/stable/c/bfa9d28960ed677d556bdf097073bc3129686229"],"weaknesses":[],"ingestedAt":"2026-10-29T20:12:16.098Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/53xxx/CVE-2026-53364.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-53364","state":"PUBLISHED","datePublished":"2026-07-13T17:33:52.302Z","dateUpdated":"2026-08-03T09:32:35.820Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-06-09T07:44:35.400Z"},"containers":{"cna":{"title":"Bluetooth: hci_conn: Fix memory leak in hci_le_big_terminate()","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: hci_conn: Fix memory leak in hci_le_big_terminate()\n\nhci_le_big_terminate() allocates iso_list_data via kzalloc_obj but\nreturns 0 without freeing it when neither pa_sync_term nor big_sync_term\nflags are set after evaluating the PA and BIG sync connection state.\n\nThis early-return path was introduced when hci_le_big_terminate() was\nrefactored to take struct hci_conn instead of raw u8 parameters, adding\nPA/BIG flag evaluation logic. The existing kfree() on hci_cmd_sync_queue\nfailure does not cover this path."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"a8444cca514edd4e47e322926b10516a5a6d7016","status":"affected","lessThan":"488e808e3fa53200f3ef3324c45fcba4ae9f4972","versionType":"git"},{"version":"a7bcffc673de219af2698fbb90627016233de67b","status":"affected","lessThan":"e6b78019664dfe37c3dc707f50e7b453d6c7726d","versionType":"git"},{"version":"a7bcffc673de219af2698fbb90627016233de67b","status":"affected","lessThan":"a59d4f4217e6200ca9180643e5738a87d3fa8be0","versionType":"git"},{"version":"a7bcffc673de219af2698fbb90627016233de67b","status":"affected","lessThan":"bfa9d28960ed677d556bdf097073bc3129686229","versionType":"git"},{"version":"087812a6119b4cd5c9d658b48aee40a25707a1c6","status":"affected","versionType":"git"},{"version":"6.16.4","status":"affected","lessThan":"6.17","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/bluetooth/hci_conn.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.17","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.17","versionType":"semver"},{"version":"6.18.35","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.0.12","status":"unaffected","lessThanOrEqual":"7.0.*","versionType":"semver"},{"version":"7.1","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/bluetooth/hci_conn.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/488e808e3fa53200f3ef3324c45fcba4ae9f4972"},{"url":"https://git.kernel.org/stable/c/e6b78019664dfe37c3dc707f50e7b453d6c7726d"},{"url":"https://git.kernel.org/stable/c/a59d4f4217e6200ca9180643e5738a87d3fa8be0"},{"url":"https://git.kernel.org/stable/c/bfa9d28960ed677d556bdf097073bc3129686229"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-08-03T09:32:35.820Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.17","versionEndExcluding":"6.18.35"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.17","versionEndExcluding":"7.0.12"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.17","versionEndExcluding":"7.1"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.16.4"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}