Bluetooth: ISO: release unused CIS holds after channel attach
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: ISO: release unused CIS holds after channel attach hci_bind_cis() and hci_connect_cis() return one hci_conn hold for the ISO layer. A new channel association consumes that hold, which is eventually released by iso_conn_free(). There are two cases where iso_chan_add() does not create an association: it returns success when the socket is already attached to the same iso_conn, and it returns -EBUSY when another socket is attached. The hold returned for the current call is unused in both cases. This occurs when deferred setup calls iso_connect_cis() again for its existing socket, or when another socket attempts to reuse the CIS. Detect the idempotent case while the connection is locked and release the unused hold after iso_chan_add(). Also release it on -EBUSY. Do not drop it for other errors: a newly allocated iso_conn releases the transferred hold when its last temporary reference is put.
CVE-2026-98458
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-2026-98458
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": "69997d50ec574be816b4ee8f9cee52ebbd53f8bd",
"lessThan": "e0e8b70207eaf27aee0a05ec5bf2d1b6bcb004d1",
"versionType": "git"
},
{
"status": "affected",
"version": "69997d50ec574be816b4ee8f9cee52ebbd53f8bd",
"lessThan": "ed4c026cc4094dfb7a329b9d8df0ddd0be1b2458",
"versionType": "git"
},
{
"status": "affected",
"version": "69997d50ec574be816b4ee8f9cee52ebbd53f8bd",
"lessThan": "e5fcca51177f224604e3a8c926ffd5edbeb58b09",
"versionType": "git"
},
{
"status": "affected",
"version": "69997d50ec574be816b4ee8f9cee52ebbd53f8bd",
"lessThan": "0fcd4dad555c96e0bd3a1b8c569f989be85c7341",
"versionType": "git"
}
],
"programFiles": [
"net/bluetooth/iso.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.6"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.6",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.12.113",
"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/iso.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-98458
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #38511 · Revision 1
- Added to Heist Feed
- Publisher date