Bluetooth: bnep: pin L2CAP connection during netdev registration
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: bnep: pin L2CAP connection during netdev registration bnep_add_connection() reads the L2CAP connection without holding the channel lock, then passes its HCI device to register_netdev(). Controller teardown can clear and release that connection concurrently, leaving the network device registration path to dereference a freed parent device. Take a reference to the L2CAP connection while holding the channel lock. Retain it until register_netdev() has taken the parent device reference.
CVE-2026-64408
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-2026-64408
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": "65f53e9802dbfae0e5758a91793c3f5f8bece49b",
"lessThan": "390b5db3ff8745187f094c4e915663b7b1f98944",
"versionType": "git"
},
{
"status": "affected",
"version": "65f53e9802dbfae0e5758a91793c3f5f8bece49b",
"lessThan": "46a88784c4c9b96954dd86f747ce93f65efa1302",
"versionType": "git"
},
{
"status": "affected",
"version": "65f53e9802dbfae0e5758a91793c3f5f8bece49b",
"lessThan": "551ae773ec64045b4e72099132654887e0270bcc",
"versionType": "git"
},
{
"status": "affected",
"version": "65f53e9802dbfae0e5758a91793c3f5f8bece49b",
"lessThan": "ae215c5b6422d8eda443b861b124bd1be6969c31",
"versionType": "git"
},
{
"status": "affected",
"version": "65f53e9802dbfae0e5758a91793c3f5f8bece49b",
"lessThan": "df22adc7eafc22e651561813c11dc51a796b12ee",
"versionType": "git"
},
{
"status": "affected",
"version": "65f53e9802dbfae0e5758a91793c3f5f8bece49b",
"lessThan": "a6b22dbd80926556290ad2243be25218d6956a19",
"versionType": "git"
},
{
"status": "affected",
"version": "65f53e9802dbfae0e5758a91793c3f5f8bece49b",
"lessThan": "563a8573047182f550b1e1e030615755cd8c41da",
"versionType": "git"
},
{
"status": "affected",
"version": "65f53e9802dbfae0e5758a91793c3f5f8bece49b",
"lessThan": "bb067a99a0356196c0b89a95721985485ebce5a5",
"versionType": "git"
}
],
"programFiles": [
"net/bluetooth/bnep/core.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "3.13"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "3.13",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.10.261",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.212",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.178",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.145",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.96",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.39",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.1.4",
"versionType": "semver",
"lessThanOrEqual": "7.1.*"
},
{
"status": "unaffected",
"version": "7.2",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"net/bluetooth/bnep/core.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-64408
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #41033 · Revision 1
- Added to Heist Feed
- Publisher date