EUVD-2026-103702

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hciconn: fix CIS hold ownership on reuse Commit 69997d50ec57 "Bluetooth: ISO: handle bound CIS cleanup via hciconn" made hcibindcis and hciconnectcis return a connection with one hold for the ISO layer. hcibindcis...

CVE-2026-98462 Bluetooth: hci_conn: fix CIS hold ownership on reuse

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hciconn: fix CIS hold ownership on reuse Commit 69997d50ec57 "Bluetooth: ISO: handle bound CIS cleanup via hciconn" made hcibindcis and hciconnectcis return a connection with one hold for the ISO layer. hcibindcis...

CVE-2026-98462

The Linux kernel Bluetooth stack contains a flaw in how CIS hold ownership is handled during reuse. Specifically, the functions hci_bind_cis() and hci_connect_cis() may fail to correctly manage ISO layer holds. In hci_bind_cis(), holds are currently taken only after CIS configuration, leading to ...

CVE-2026-98461 Bluetooth: hci_sock: validate event length before filtering

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hcisock: validate event length before filtering isfilteredpacket reads the event code from skb-data0 without first checking that the skb is nonempty. When an opcode filter is configured, it also reads the command opcod...

EUVD-2026-103701

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hcisock: validate event length before filtering isfilteredpacket reads the event code from skb-data0 without first checking that the skb is nonempty. When an opcode filter is configured, it also reads the command opcod...

CVE-2026-98461 Bluetooth: hci_sock: validate event length before filtering

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hcisock: validate event length before filtering isfilteredpacket reads the event code from skb-data0 without first checking that the skb is nonempty. When an opcode filter is configured, it also reads the command opcod...

CVE-2026-98461

The Linux kernel contains a vulnerability in the Bluetooth subsystem within the hci_sock component. The is_filtered_packet() function performs an out-of-bounds read by accessing skb->data[0] without verifying the socket buffer is non-empty. Additionally, when an opcode filter is active, it rea...

CVE-2026-98460 Bluetooth: hci_sock: reject out-of-range OCF values

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hcisock: reject out-of-range OCF values The raw HCI socket security filter has 128 OCF bits per supported OGF, but masks the 10-bit OCF with 127 before looking up the command. An unprivileged socket can therefore submi...

CVE-2026-98460 Bluetooth: hci_sock: reject out-of-range OCF values

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hcisock: reject out-of-range OCF values The raw HCI socket security filter has 128 OCF bits per supported OGF, but masks the 10-bit OCF with 127 before looking up the command. An unprivileged socket can therefore submi...

EUVD-2026-103700

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hcisock: reject out-of-range OCF values The raw HCI socket security filter has 128 OCF bits per supported OGF, but masks the 10-bit OCF with 127 before looking up the command. An unprivileged socket can therefore submi...

CVE-2026-98460

A vulnerability exists in the Linux kernel 's Bluetooth hci_sock component. The raw HCI socket security filter provides 128 OCF bits per supported OGF but masks the 10-bit OCF with 127 before command lookup. This allows an unprivileged socket to submit a reserved OCF that aliases an allowlisted c...

CVE-2026-98459 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 hcibindbis hciconnlink takes a lifetime reference to its parent with hciconnget, but only takes an operational hold on the child. hciconnunlink later balances both a hold and a reference...

CVE-2026-98459 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 hcibindbis hciconnlink takes a lifetime reference to its parent with hciconnget, but only takes an operational hold on the child. hciconnunlink later balances both a hold and a reference...

EUVD-2026-103699

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: ISO: balance the parent hold in hcibindbis hciconnlink takes a lifetime reference to its parent with hciconnget, but only takes an operational hold on the child. hciconnunlink later balances both a hold and a reference...

CVE-2026-98459

A vulnerability in the Linux kernel Bluetooth stack allows for a potential use-after-free or premature disconnection. The issue resides in hci_bind_bis() , where the function obtains a parent pointer from hci_conn_hash_lookup_big() without taking an operational hold. Because hci_conn_unlink() lat...

CVE-2026-98458 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 hcibindcis and hciconnectcis return one hciconn hold for the ISO layer. A new channel association consumes that hold, which is eventually released by isoconnfree. Ther...

CVE-2026-98458 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 hcibindcis and hciconnectcis return one hciconn hold for the ISO layer. A new channel association consumes that hold, which is eventually released by isoconnfree. Ther...

EUVD-2026-103698

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: ISO: release unused CIS holds after channel attach hcibindcis and hciconnectcis return one hciconn hold for the ISO layer. A new channel association consumes that hold, which is eventually released by isoconnfree. Ther...

CVE-2026-98458

The Linux kernel Bluetooth ISO layer contains a vulnerability where hci_bind_cis() and hci_connect_cis() return an hci_conn hold that may remain unused. Specifically, the hold is not released when iso_chan_add() returns success for an already attached socket (idempotent case) or returns -EBUSY wh...

CVE-2026-98457 Bluetooth: L2CAP: validate frame length before control and FCS access

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: validate frame length before control and FCS access l2capdatarcv unpacks either a two-byte or four-byte control field without first ensuring that it is present. A short ERTM or streaming-mode frame can therefore...