Bluetooth: mgmt: fix UAF in pair command cancellation
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: mgmt: fix UAF in pair command cancellation The pairing completion and authentication failure callbacks look up the pending MGMT_OP_PAIR_DEVICE command by walking hdev->mgmt_pending. The lookup returned a command that was still linked on the shared pending list, without keeping mgmt_pending_lock held for the later dereference and removal. A concurrent MGMT_OP_CANCEL_PAIR_DEVICE request can remove and free the same pending command before the callback uses it. The reverse race is also possible when cancel_pair_device() gets a command from pending_find() and a callback removes it before the cancel path dereferences it. This can lead to a use-after-free and a second list_del(). Make the pairing lookup helpers transfer ownership of the pending command by removing it from hdev->mgmt_pending while holding mgmt_pending_lock. The callbacks and cancel path then complete the command and free it directly, so racing paths cannot find or free the same command again. Take a temporary hci_conn reference in cancel_pair_device() because the command completion drops the reference stored in the pending command.
CVE-2026-74510
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-2026-74510
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": "e9a416b5ce0c0f93819f55d34cf6882196e9c3b2",
"lessThan": "50af4280a587c9971b5388cbc438f1324e626b7b",
"versionType": "git"
},
{
"status": "affected",
"version": "e9a416b5ce0c0f93819f55d34cf6882196e9c3b2",
"lessThan": "86ed4dd6548ccf277bc691bc912ca06e76b9d80c",
"versionType": "git"
},
{
"status": "affected",
"version": "e9a416b5ce0c0f93819f55d34cf6882196e9c3b2",
"lessThan": "7c2a152a897cd1c184b2051484d4f74d803e7f4a",
"versionType": "git"
},
{
"status": "affected",
"version": "e9a416b5ce0c0f93819f55d34cf6882196e9c3b2",
"lessThan": "c569def320aa8b1fde89227e2ea96606790fd86d",
"versionType": "git"
},
{
"status": "affected",
"version": "e9a416b5ce0c0f93819f55d34cf6882196e9c3b2",
"lessThan": "51be7280980fddc90ebe874a69c2fe8ab02bb46a",
"versionType": "git"
},
{
"status": "affected",
"version": "e9a416b5ce0c0f93819f55d34cf6882196e9c3b2",
"lessThan": "d0a7b48ad0921bd88effaee10bf970ab1d5d0ddd",
"versionType": "git"
}
],
"programFiles": [
"net/bluetooth/mgmt.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "2.6.39"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "2.6.39",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.1.184",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.151",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.103",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.44",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.1.8",
"versionType": "semver",
"lessThanOrEqual": "7.1.*"
},
{
"status": "unaffected",
"version": "7.2",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"net/bluetooth/mgmt.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-74510
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #33188 · Revision 1
- Added to Heist Feed
- Publisher date