Bluetooth: ISO: clear iso_data always when detaching conn from hcon
Summary
| CVE | CVE-2026-74541 |
|---|---|
| State | PUBLISHED |
| Assigner | Linux |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-08-15 13:17:59 UTC |
| Updated | 2026-08-17 06:19:51 UTC |
| Description | In the Linux kernel, the following vulnerability has been resolved: Bluetooth: ISO: clear iso_data always when detaching conn from hcon When setting conn->hcon = NULL, also conn->hcon->iso_data = NULL is necessary, otherwise later iso_conn_free() will UAF. Fix clearing of iso_data in iso_sock_disconn() Fixes KASAN: slab-use-after-free in iso_conn_hold_unless_zero on iso_sock_release() followed by hci_abort_conn_sync(). |
Risk And Classification
Primary CVSS: v3.1 8.8 HIGH from 416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS: 0.001680000 probability, percentile 0.064900000 (date 2026-08-16)
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | Secondary | 8.8 | HIGH | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| 3.1 | CNA | DECLARED | 8.8 | HIGH | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
CVSS v3.1 Breakdown
Attack Vector
AdjacentAttack Complexity
LowPrivileges Required
NoneUser Interaction
NoneScope
UnchangedConfidentiality
HighIntegrity
HighAvailability
HighCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Linux | Linux | affected fbdc4bc47268953c80853489f696e02d61f9a2c6 cc1d39946d62bc568551dfb81149724de1e91338 git | Not specified |
| CNA | Linux | Linux | affected fbdc4bc47268953c80853489f696e02d61f9a2c6 7b51a9c25e9698b64df9f2218f10eecf7dc7e2d0 git | Not specified |
| CNA | Linux | Linux | affected fbdc4bc47268953c80853489f696e02d61f9a2c6 63c0f396a18b767eb28e895eb95bbdce6c172c59 git | Not specified |
| CNA | Linux | Linux | affected fbdc4bc47268953c80853489f696e02d61f9a2c6 69a4a7b162b3db6ac337e3094cdee38f24d42ff7 git | Not specified |
| CNA | Linux | Linux | affected fbdc4bc47268953c80853489f696e02d61f9a2c6 d57e506f6a1e3929611340fae87c1e4823f4d85c git | Not specified |
| CNA | Linux | Linux | affected c03a10bd5b6ccb22921e04bcddc987410df7e7a9 git | Not specified |
| CNA | Linux | Linux | affected 6.5.12 6.6 semver | Not specified |
| CNA | Linux | Linux | affected 6.6 | Not specified |
| CNA | Linux | Linux | unaffected 6.6 semver | Not specified |
| CNA | Linux | Linux | unaffected 6.6.151 6.6.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.12.103 6.12.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.18.44 6.18.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.1.8 7.1.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.2 * original_commit_for_fix | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| git.kernel.org/stable/c/d57e506f6a1e3929611340fae87c1e4823f4d85c | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/69a4a7b162b3db6ac337e3094cdee38f24d42ff7 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/7b51a9c25e9698b64df9f2218f10eecf7dc7e2d0 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/cc1d39946d62bc568551dfb81149724de1e91338 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/63c0f396a18b767eb28e895eb95bbdce6c172c59 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.