Bluetooth: hci_event: fix potential UAF in hci_le_remote_conn_param_req_evt
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_event: fix potential UAF in hci_le_remote_conn_param_req_evt hci_conn lookup and field access must be covered by hdev lock in hci_le_remote_conn_param_req_evt, otherwise it's possible it is freed concurrently. Extend the hci_dev_lock critical section to cover all conn usage.
CVE-2026-43018
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-2026-43018
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": "95118dd4edfec950898a00180c6f998df0a6406d",
"lessThan": "59eecf0ffde15670e6a5e10c47be67f73d843b20",
"versionType": "git"
},
{
"status": "affected",
"version": "95118dd4edfec950898a00180c6f998df0a6406d",
"lessThan": "5fb69e1eeea9d6cba80517e9f058b56b34bc3a81",
"versionType": "git"
},
{
"status": "affected",
"version": "95118dd4edfec950898a00180c6f998df0a6406d",
"lessThan": "7cadb03be37e761130edb153544fe0770a842b19",
"versionType": "git"
},
{
"status": "affected",
"version": "95118dd4edfec950898a00180c6f998df0a6406d",
"lessThan": "1d0bdbfe3e91c11f0a704c52443a9446a10d699c",
"versionType": "git"
},
{
"status": "affected",
"version": "95118dd4edfec950898a00180c6f998df0a6406d",
"lessThan": "ea3cd36d7382d5f8309df04c275d20df139ed42c",
"versionType": "git"
},
{
"status": "affected",
"version": "95118dd4edfec950898a00180c6f998df0a6406d",
"lessThan": "b255531b27da336571411248c2a72a350662bd09",
"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": "5.17"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "5.17",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.1.168",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.134",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.81",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.22",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "6.19.12",
"versionType": "semver",
"lessThanOrEqual": "6.19.*"
},
{
"status": "unaffected",
"version": "7.0",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"net/bluetooth/hci_event.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-43018
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #40001 · Revision 1
- Added to Heist Feed
- Publisher date