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Bluetooth: hci_sync: reject oversized Broadcast Announcement prepend

Type: advisorySource: Official CVE List1 source record

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_sync: reject oversized Broadcast Announcement prepend Existing advertising instances can already hold the maximum extended advertising payload. When hci_adv_bcast_annoucement() prepends the Broadcast Announcement service data to that payload, the combined data may no longer fit in the temporary buffer used to rebuild the advertising data. Reject that case before copying the existing payload and report the failure through the device log. This keeps the existing advertising data intact and avoids overrunning the temporary buffer.

Announced Source revision 1
Original source ↗

CVE-2026-53209

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2026-53209

Linux

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Linux

Source reference: /containers/cna/affected/1/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "63f365eb4d1668a04070151b555d55a07ede8d4b",
        "lessThan": "10b0e832cc05d7aef4b92bed912cbd4a395d0862",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "c621211b308816889f0a3246de448bfcef8ab3ab",
        "lessThan": "1338ee049a8910ba6c9cee963920e978e6893c7d",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "907ef6e12fb558a0763e894311eb245a94c192dd",
        "lessThan": "02f50e8bb69f9b22516163a09922f5537d3b12d1",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "5725bc608252050ed8a4d47d59225b7dd73474c8",
        "lessThan": "dafc9f57140e66a10945127aa7433c3d715dc253",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "5725bc608252050ed8a4d47d59225b7dd73474c8",
        "lessThan": "cdd8bbdbee763fdf5bf343e6f7d4e79347739f62",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "5725bc608252050ed8a4d47d59225b7dd73474c8",
        "lessThan": "5c65b96b549ea2dcfde497436bf9e048deb87758",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "15da883c010cbc2a84aec1738b6ad6ee477846de",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "6.1.142",
        "lessThan": "6.1.176",
        "versionType": "semver"
      },
      {
        "status": "affected",
        "version": "6.6.94",
        "lessThan": "6.6.143",
        "versionType": "semver"
      },
      {
        "status": "affected",
        "version": "6.12.34",
        "lessThan": "6.12.94",
        "versionType": "semver"
      },
      {
        "status": "affected",
        "version": "6.15.3",
        "lessThan": "6.16",
        "versionType": "semver"
      }
    ],
    "programFiles": [
      "net/bluetooth/hci_sync.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "6.16"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "6.16",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "6.1.176",
        "versionType": "semver",
        "lessThanOrEqual": "6.1.*"
      },
      {
        "status": "unaffected",
        "version": "6.6.143",
        "versionType": "semver",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.12.94",
        "versionType": "semver",
        "lessThanOrEqual": "6.12.*"
      },
      {
        "status": "unaffected",
        "version": "6.18.36",
        "versionType": "semver",
        "lessThanOrEqual": "6.18.*"
      },
      {
        "status": "unaffected",
        "version": "7.0.13",
        "versionType": "semver",
        "lessThanOrEqual": "7.0.*"
      },
      {
        "status": "unaffected",
        "version": "7.1",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "net/bluetooth/hci_sync.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2026-53209

Source reference: /cveMetadata/cveId

Publisher severity

high

Source reference: /containers/cna/metrics

Event
#40780 · Revision 1
Added to Heist Feed
Publisher date
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