Bluetooth: ISO: balance the parent hold in hci_bind_bis()
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: ISO: balance the parent hold in hci_bind_bis() hci_conn_link() takes a lifetime reference to its parent with hci_conn_get(), but only takes an operational hold on the child. hci_conn_unlink() later balances both a hold and a reference on the parent. The SCO and CIS paths pass a parent acquired from a connect helper, so it already has a hold. For an additional BIS, hci_bind_bis() obtains the parent from hci_conn_hash_lookup_big(), which returns a bare pointer. Unlinking the child then drops the parent's existing hold and can schedule it for disconnection while its socket is still using it. Take a hold on the parent before linking it and drop that hold if linking fails. A successful link transfers the hold to hci_conn_unlink().
CVE-2026-98459
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-2026-98459
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": "11dc486ed5d4626e6b92a23b67ed76cb6c48bfc9",
"lessThan": "ff28e6c67143c76ef50c3eac01f2fad411705f71",
"versionType": "git"
},
{
"status": "affected",
"version": "fa224d0c094a458e9ebf5ea9b1c696136b7af427",
"lessThan": "03a91cdf6862fb351a74f035ad21e70112438552",
"versionType": "git"
},
{
"status": "affected",
"version": "fa224d0c094a458e9ebf5ea9b1c696136b7af427",
"lessThan": "4e49206d9574a4c109480198e73aea34ad0ed7f6",
"versionType": "git"
},
{
"status": "affected",
"version": "fa224d0c094a458e9ebf5ea9b1c696136b7af427",
"lessThan": "bbcd723ee7a84bc868142fd57717af88e54e555a",
"versionType": "git"
},
{
"status": "affected",
"version": "fa224d0c094a458e9ebf5ea9b1c696136b7af427",
"lessThan": "4c94557dd02569efa6c1072a0439addaef9a5224",
"versionType": "git"
},
{
"status": "affected",
"version": "6.6.67",
"lessThan": "6.6.158",
"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": "6.8"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.8",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.6.158",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.112",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.55",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.9",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"net/bluetooth/hci_conn.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-98459
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #38512 · Revision 1
- Added to Heist Feed
- Publisher date