High
Bluetooth: hci_conn: hold conn reference in abort_conn_sync()
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_conn: hold conn reference in abort_conn_sync() There is theoretical UAF if the conn is freed while the hci_sync task is running. Hold refcount to avoid that.
Announced Group revision 1
Original source ↗CVE-2026-74531
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-2026-74531
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": "249c88e7fb45b6b705040c5af4bd0d0f2bc9735c",
"lessThan": "64d1645f26aa49b5a86ba2fccd0bb6749ea725a6",
"versionType": "git"
},
{
"status": "affected",
"version": "227a0cdf4a028a73dc256d0f5144b4808d718893",
"lessThan": "963fb4b8e7d1ab07b4ae45bf15d41e667c88caca",
"versionType": "git"
},
{
"status": "affected",
"version": "227a0cdf4a028a73dc256d0f5144b4808d718893",
"lessThan": "e8f9fef362bab431d95371d3406bc720350290c3",
"versionType": "git"
},
{
"status": "affected",
"version": "227a0cdf4a028a73dc256d0f5144b4808d718893",
"lessThan": "fa812cfa81aa3d4a7b6ce8277979af57b3f79712",
"versionType": "git"
},
{
"status": "affected",
"version": "227a0cdf4a028a73dc256d0f5144b4808d718893",
"lessThan": "5761d003daa987ac81463f570713ce9c9dd204e5",
"versionType": "git"
},
{
"status": "affected",
"version": "7fe4d391e937c2f048a43ff4b421e677f10d83c0",
"versionType": "git"
},
{
"status": "affected",
"version": "58afdc9b18871eb1d461c725be9e9f3f44a39aeb",
"versionType": "git"
},
{
"status": "affected",
"version": "6.6.51",
"lessThan": "6.6.151",
"versionType": "semver"
},
{
"status": "affected",
"version": "6.1.184",
"lessThan": "6.2",
"versionType": "semver"
},
{
"status": "affected",
"version": "6.10.10",
"lessThan": "6.11",
"versionType": "semver"
}
],
"programFiles": [
"net/bluetooth/hci_conn.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.11"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.11",
"versionType": "semver"
},
{
"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/hci_conn.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-74531
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #33197 · Revision 1
- Added to Heist Feed
- Publisher date