CVE-2026-74533
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2026
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
Bluetooth: ISO: fix race of kfree vs kref_get_unless_zero
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: ISO: fix race of kfree vs kref_get_unless_zero hci_conn::iso_data is accessed and modified without lock or RCU. This leads to a race [Task hdev->workqueue] [Task 2] iso_recv iso_conn_put(conn) conn = LOAD hcon->iso_data iso_conn_free(conn) iso_conn_hold_unless_zero(conn) hcon->iso_data = NULL kfree(conn) kref_get_unless_zero(&conn->ref) /* UAF */ and also to races in iso_conn_add() vs. iso_conn_free(). Fix by adding spinlock hci_conn::proto_lock and using it to guard hci_conn::iso_data.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| a58d0f5dac322e16cc75334d000666512341bde5 | affected | git | 08ac98f18c8d24cc037858dd6fba2670155e4e84 | Unavailable | None listed |
| dc26097bdb864a0d5955b9a25e43376ffc1af99b | affected | git | 876a3e94c70d0859d1dad1c986112d4f0d99eba8 | Unavailable | None listed |
| dc26097bdb864a0d5955b9a25e43376ffc1af99b | affected | git | af24e338bf5dafb80f42baa9a0b9e9b57b1c5d9c | Unavailable | None listed |
| f53e7489273dc2bb307bf50f319b3762d45534f0 | affected | git | Unavailable | Unavailable | None listed |
| 6.12.2 | affected | semver | 6.12.114 | Unavailable | None listed |
| 6.11.11 | affected | semver | 6.12 | Unavailable | None listed |
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
affected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 6.13 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 6.13 | Unavailable | None listed |
| 6.12.114 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 7.1.8 | unaffected | semver | Unavailable | 7.1.* | None listed |
| 7.2 | unaffected | original_commit_for_fix | Unavailable | * | None listed |