Bluetooth: hci_event: fix potential UAF in SSP passkey handlers
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_event: fix potential UAF in SSP passkey handlers hci_conn lookup and field access must be covered by hdev lock in hci_user_passkey_notify_evt() and hci_keypress_notify_evt(), otherwise the connection can be freed concurrently. Extend the hci_dev_lock critical section to cover all conn usage in both handlers. Keep the existing keypress notification behavior unchanged by routing the early exits through a common unlock path.
CVE-2026-46056
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-2026-46056
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": "92a25256f142d55e25f9959441cea6ddeabae57e",
"lessThan": "ea18732d2614557e59f4c0d8cdbe6611aeab33b7",
"versionType": "git"
},
{
"status": "affected",
"version": "92a25256f142d55e25f9959441cea6ddeabae57e",
"lessThan": "d28311539ac9f65e29308ea219ecaa48aa5e76e5",
"versionType": "git"
},
{
"status": "affected",
"version": "92a25256f142d55e25f9959441cea6ddeabae57e",
"lessThan": "b6ae482f88654db407c8c17619d4b62959b903ef",
"versionType": "git"
},
{
"status": "affected",
"version": "92a25256f142d55e25f9959441cea6ddeabae57e",
"lessThan": "204028af77a265e31ceb4ba7f643349a3cca72b2",
"versionType": "git"
},
{
"status": "affected",
"version": "92a25256f142d55e25f9959441cea6ddeabae57e",
"lessThan": "01a6431766c35dfedb86e0cb5d3fc80c6d604a47",
"versionType": "git"
},
{
"status": "affected",
"version": "92a25256f142d55e25f9959441cea6ddeabae57e",
"lessThan": "e08d75753db17aa943d7622f09d9c217b5bfd3b8",
"versionType": "git"
},
{
"status": "affected",
"version": "92a25256f142d55e25f9959441cea6ddeabae57e",
"lessThan": "8c6443bb9257b780986fb67ec08565bf48ecb8d7",
"versionType": "git"
},
{
"status": "affected",
"version": "92a25256f142d55e25f9959441cea6ddeabae57e",
"lessThan": "85fa3512048793076eef658f66489112dcc91993",
"versionType": "git"
}
],
"programFiles": [
"net/bluetooth/hci_event.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "3.7"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "3.7",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.10.259",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.210",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.175",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.140",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.86",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.27",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.0.4",
"versionType": "semver",
"lessThanOrEqual": "7.0.*"
},
{
"status": "unaffected",
"version": "7.1",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"net/bluetooth/hci_event.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-46056
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #40111 · Revision 1
- Added to Heist Feed
- Publisher date