{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-53209", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-06-09T07:44:35.391Z", "datePublished": "2026-06-25T08:39:14.915Z", "dateUpdated": "2026-06-28T06:40:25.549Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-06-28T06:40:25.549Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: hci_sync: reject oversized Broadcast Announcement prepend\n\nExisting advertising instances can already hold the maximum extended\nadvertising payload. When hci_adv_bcast_annoucement() prepends the\nBroadcast Announcement service data to that payload, the combined data\nmay no longer fit in the temporary buffer used to rebuild the\nadvertising data.\n\nReject that case before copying the existing payload and report the\nfailure through the device log. This keeps the existing advertising\ndata intact and avoids overrunning the temporary buffer."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "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_sync.c"], "versions": [{"version": "63f365eb4d1668a04070151b555d55a07ede8d4b", "lessThan": "10b0e832cc05d7aef4b92bed912cbd4a395d0862", "status": "affected", "versionType": "git"}, {"version": "c621211b308816889f0a3246de448bfcef8ab3ab", "lessThan": "1338ee049a8910ba6c9cee963920e978e6893c7d", "status": "affected", "versionType": "git"}, {"version": "907ef6e12fb558a0763e894311eb245a94c192dd", "lessThan": "02f50e8bb69f9b22516163a09922f5537d3b12d1", "status": "affected", "versionType": "git"}, {"version": "5725bc608252050ed8a4d47d59225b7dd73474c8", "lessThan": "dafc9f57140e66a10945127aa7433c3d715dc253", "status": "affected", "versionType": "git"}, {"version": "5725bc608252050ed8a4d47d59225b7dd73474c8", "lessThan": "cdd8bbdbee763fdf5bf343e6f7d4e79347739f62", "status": "affected", "versionType": "git"}, {"version": "5725bc608252050ed8a4d47d59225b7dd73474c8", "lessThan": "5c65b96b549ea2dcfde497436bf9e048deb87758", "status": "affected", "versionType": "git"}, {"version": "15da883c010cbc2a84aec1738b6ad6ee477846de", "status": "affected", "versionType": "git"}, {"version": "6.1.142", "lessThan": "6.1.176", "status": "affected", "versionType": "semver"}, {"version": "6.6.94", "lessThan": "6.6.143", "status": "affected", "versionType": "semver"}, {"version": "6.12.34", "lessThan": "6.12.94", "status": "affected", "versionType": "semver"}, {"version": "6.15.3", "lessThan": "6.16", "status": "affected", "versionType": "semver"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/bluetooth/hci_sync.c"], "versions": [{"version": "6.16", "status": "affected"}, {"version": "0", "lessThan": "6.16", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.176", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.143", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.94", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.36", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.0.13", "lessThanOrEqual": "7.0.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1", "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": "6.1.142", "versionEndExcluding": "6.1.176"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.6.94", "versionEndExcluding": "6.6.143"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.12.34", "versionEndExcluding": "6.12.94"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.16", "versionEndExcluding": "6.18.36"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.16", "versionEndExcluding": "7.0.13"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.16", "versionEndExcluding": "7.1"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.15.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/10b0e832cc05d7aef4b92bed912cbd4a395d0862"}, {"url": "https://git.kernel.org/stable/c/1338ee049a8910ba6c9cee963920e978e6893c7d"}, {"url": "https://git.kernel.org/stable/c/02f50e8bb69f9b22516163a09922f5537d3b12d1"}, {"url": "https://git.kernel.org/stable/c/dafc9f57140e66a10945127aa7433c3d715dc253"}, {"url": "https://git.kernel.org/stable/c/cdd8bbdbee763fdf5bf343e6f7d4e79347739f62"}, {"url": "https://git.kernel.org/stable/c/5c65b96b549ea2dcfde497436bf9e048deb87758"}], "title": "Bluetooth: hci_sync: reject oversized Broadcast Announcement prepend", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{}

{"bugzilla": {"description": "kernel: Bluetooth: hci_sync: reject oversized Broadcast Announcement prepend", "id": "2492762", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2492762"}, "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-131", "details": ["A flaw was found in the Bluetooth subsystem of the Linux kernel, specifically within the `hci_sync` component. This vulnerability occurs when the `hci_adv_bcast_annoucement()` function attempts to prepend Broadcast Announcement service data to an existing advertising payload that is already at its maximum size. This can lead to an oversized data packet that may overrun a temporary buffer, potentially causing a denial of service (DoS) or other unpredictable system behavior."], "name": "CVE-2026-53209", "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": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not 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": "2026-06-25T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-53209\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-53209\nhttps://lore.kernel.org/linux-cve-announce/2026062502-CVE-2026-53209-92bf@gregkh/T"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[63f365eb4d1668a04070151b555d55a07ede8d4b,10b0e832cc05d7aef4b92bed912cbd4a395d0862)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[c621211b308816889f0a3246de448bfcef8ab3ab,1338ee049a8910ba6c9cee963920e978e6893c7d)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[907ef6e12fb558a0763e894311eb245a94c192dd,02f50e8bb69f9b22516163a09922f5537d3b12d1)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[5725bc608252050ed8a4d47d59225b7dd73474c8,dafc9f57140e66a10945127aa7433c3d715dc253)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[5725bc608252050ed8a4d47d59225b7dd73474c8,cdd8bbdbee763fdf5bf343e6f7d4e79347739f62)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[5725bc608252050ed8a4d47d59225b7dd73474c8,5c65b96b549ea2dcfde497436bf9e048deb87758)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[15da883c010cbc2a84aec1738b6ad6ee477846de,15da883c010cbc2a84aec1738b6ad6ee477846de]"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[6.1.142,6.1.176)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[6.6.94,6.6.143)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[6.12.34,6.12.94)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[6.15.3,6.16)"}}], "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": "semver", "value": "[6.16,6.16]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,6.16)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.1.176,6.1.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.143,6.6.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.94,6.12.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.36,6.18.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.0.13,7.0.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[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": "2026-06-25T12:00:14.024199+00:00", "updated": "2026-06-28T14:45:17.251563+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}