CVE-2026-74533 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 krefgetunlesszero hciconn::isodata is accessed and modified without lock or RCU. This leads to a race Task hdev-workqueue Task 2 isorecv isoconnputconn conn = LOAD hcon-isodata isoconnfreeconn...

CVE-2026-74533

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: ISO: fix race of kfree vs krefgetunlesszero hciconn::isodata is accessed and modified without lock or RCU. This leads to a race Task hdev-workqueue Task 2 isorecv isoconnputconn conn = LOAD hcon-isodata isoconnfreeconn...

CVE-2026-74534

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: ISO: fix refcounting of isoconn isoconndel and isochandel have a race that results to double-put of isoconn: Task hdev-workqueue Task 2 isoconndel isochandel isoconnholdunlesszero isoconnlock isoconnlock conn-sk = NULL...

CVE-2026-74533

CVE-2026-74533 affects the Linux kernel Bluetooth ISO subsystem. The vulnerability arises because hci_conn::iso_data is accessed and modified without proper locking or RCU, enabling a race between iso_recv/iso_conn_free paths and iso_conn_hold_unless_zero, which can lead to the sequence iso_data ...

EUVD-2026-59726

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: ISO: fix race of kfree vs krefgetunlesszero hciconn::isodata is accessed and modified without lock or RCU. This leads to a race Task hdev-workqueue Task 2 isorecv isoconnputconn conn = LOAD hcon-isodata isoconnfreeconn...

CVE-2026-74533

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: ISO: fix race of kfree vs krefgetunlesszero hciconn::isodata is accessed and modified without lock or RCU. This leads to a race Task hdev-workqueue Task 2 isorecv isoconnputconn conn = LOAD hcon-isodata isoconnfreeconn...

CVE-2026-74534

Summary of CVE-2026-74534 (Linux kernel Bluetooth ISO refcounting) The issue arises in the Bluetooth ISO path where iso_conn_del() and iso_chan_del() race, causing a double-put of iso_conn. The sequence involves iso_conn_hold_unless_zero, iso_conn_lock, and potential reassignment to a socket (sk)...

CVE-2026-74534

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: ISO: fix refcounting of isoconn isoconndel and isochandel have a race that results to double-put of isoconn: Task hdev-workqueue Task 2 isoconndel isochandel isoconnholdunlesszero isoconnlock isoconnlock conn-sk = NULL...

CVE-2026-74534 Bluetooth: ISO: fix refcounting of iso_conn

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: ISO: fix refcounting of isoconn isoconndel and isochandel have a race that results to double-put of isoconn: Task hdev-workqueue Task 2 isoconndel isochandel isoconnholdunlesszero isoconnlock isoconnlock conn-sk = NULL...

EUVD-2026-59727

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: ISO: fix refcounting of isoconn isoconndel and isochandel have a race that results to double-put of isoconn: Task hdev-workqueue Task 2 isoconndel isochandel isoconnholdunlesszero isoconnlock isoconnlock conn-sk = NULL...

CVE-2026-74534 Bluetooth: ISO: fix refcounting of iso_conn

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: ISO: fix refcounting of isoconn isoconndel and isochandel have a race that results to double-put of isoconn: Task hdev-workqueue Task 2 isoconndel isochandel isoconnholdunlesszero isoconnlock isoconnlock conn-sk = NULL...

CVE-2026-74532

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: btintel: Validate length before parsing diagnostics TLV btinteldiagnostics accesses tlv-val0 without first validating that the diagnostics VSE is long enough to contain that field, so may cause reading data beyond the...

CVE-2026-74532

In the Linux kernel Bluetooth subsystem, CVE-2026-74532 affects btintel: btintel_diagnostics() which reads tlv->val[0] without verifying the diagnostics TLV length, risking reads beyond the frame. The documented fix is to validate the TLV length before access. Connected sources (SUSE, NVD, Deb...

CVE-2026-74532 Bluetooth: btintel: Validate length before parsing diagnostics TLV

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: btintel: Validate length before parsing diagnostics TLV btinteldiagnostics accesses tlv-val0 without first validating that the diagnostics VSE is long enough to contain that field, so may cause reading data beyond the...

EUVD-2026-59725

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: btintel: Validate length before parsing diagnostics TLV btinteldiagnostics accesses tlv-val0 without first validating that the diagnostics VSE is long enough to contain that field, so may cause reading data beyond the...

CVE-2026-74530

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hcisync: hold conn in hciconnectbigsync callback There is theoretical UAF if the conn is freed while the hcisync task is running. Hold refcount to avoid that. Handle NULL hcon, return 0 + do nothing to match the previo...

EUVD-2026-59724

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hciconn: hold conn reference in abortconnsync There is theoretical UAF if the conn is freed while the hcisync task is running. Hold refcount to avoid that...

CVE-2026-74530

CVE-2026-74530 affects the Linux kernel Bluetooth HCI synchronization path. The vulnerability arises in the hci_sync flow within the hci_connect_big_sync() callback where a conn could be freed while the hci_sync task runs, leading to a theoretical use-after-free. The fix adds a hold on the conn r...

EUVD-2026-59723

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hcisync: hold conn in hciconnectbigsync callback There is theoretical UAF if the conn is freed while the hcisync task is running. Hold refcount to avoid that. Handle NULL hcon, return 0 + do nothing to match the previo...

CVE-2026-74531

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hciconn: hold conn reference in abortconnsync There is theoretical UAF if the conn is freed while the hcisync task is running. Hold refcount to avoid that...