UBUNTU-CVE-2026-93209

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hcicore: use skbget instead of skbclone for reqskb BT enable fails intermittently with -ETIMEDOUT -110. The kernel log shows the HCI Read Local Version command was sent and the firmware replied with status 0x00 logged ...

UBUNTU-CVE-2026-93247

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: mgmt: fix 'hdev-discovery.uuids' NULL dereference 'uuidcount' member of struct 'discoverystate' is assigned and read without any locks, so there is a chance of situation when uuidcount != 0, but uuids is NULL and there...

EUVD-2026-86221

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: validate connectionless PSM length Connectionless L2CAP frames carry a two-byte PSM at the start of the payload. l2caprecvframe currently reads that PSM unconditionally after validating only the outer L2CAP...

CVE-2026-97408

The Linux kernel contains a vulnerability in the Bluetooth L2CAP stack where the l2cap_recv_frame() function fails to adequately validate the length of connectionless frames. Specifically, the parser unconditionally reads a two-byte PSM from the payload without first ensuring the payload is large...

CVE-2026-97408 Bluetooth: L2CAP: validate connectionless PSM length

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: validate connectionless PSM length Connectionless L2CAP frames carry a two-byte PSM at the start of the payload. l2caprecvframe currently reads that PSM unconditionally after validating only the outer L2CAP...

CVE-2026-97408 Bluetooth: L2CAP: validate connectionless PSM length

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: validate connectionless PSM length Connectionless L2CAP frames carry a two-byte PSM at the start of the payload. l2caprecvframe currently reads that PSM unconditionally after validating only the outer L2CAP...

CVE-2026-93783 Bluetooth: RFCOMM: validate skb length in rfcomm_recv_frame

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: RFCOMM: validate skb length in rfcommrecvframe rfcommrecvframe casts skb-data to struct rfcommhdr and dereferences hdr-addr and hdr-ctrl without validating skb-len first. A truncated frame with skb-len less than the...

EUVD-2026-86170

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: RFCOMM: validate skb length in rfcommrecvframe rfcommrecvframe casts skb-data to struct rfcommhdr and dereferences hdr-addr and hdr-ctrl without validating skb-len first. A truncated frame with skb-len less than the...

CVE-2026-93783 Bluetooth: RFCOMM: validate skb length in rfcomm_recv_frame

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: RFCOMM: validate skb length in rfcommrecvframe rfcommrecvframe casts skb-data to struct rfcommhdr and dereferences hdr-addr and hdr-ctrl without validating skb-len first. A truncated frame with skb-len less than the...

CVE-2026-93783

The Linux kernel contains a vulnerability in the Bluetooth RFCOMM component within the rfcomm_recv_frame() function. The root cause is a missing length validation when casting skb->data to struct rfcomm_hdr. This allows a truncated frame to trigger an out-of-bounds read of uninitialized memory...

CVE-2026-93247 Bluetooth: mgmt: fix 'hdev->discovery.uuids' NULL dereference

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: mgmt: fix 'hdev-discovery.uuids' NULL dereference 'uuidcount' member of struct 'discoverystate' is assigned and read without any locks, so there is a chance of situation when uuidcount != 0, but uuids is NULL and there...

EUVD-2026-86257

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: mgmt: fix 'hdev-discovery.uuids' NULL dereference 'uuidcount' member of struct 'discoverystate' is assigned and read without any locks, so there is a chance of situation when uuidcount != 0, but uuids is NULL and there...

CVE-2026-93247

The Linux kernel contains a NULL pointer dereference vulnerability within the Bluetooth management subsystem. The issue arises because the uuid_count member of struct discovery_state is accessed and modified without proper locking, creating a race condition during hci_update_passive_scan_sync. If...

CVE-2026-93247 Bluetooth: mgmt: fix 'hdev->discovery.uuids' NULL dereference

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: mgmt: fix 'hdev-discovery.uuids' NULL dereference 'uuidcount' member of struct 'discoverystate' is assigned and read without any locks, so there is a chance of situation when uuidcount != 0, but uuids is NULL and there...

CVE-2026-93209

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hcicore: use skbget instead of skbclone for reqskb BT enable fails intermittently with -ETIMEDOUT -110. The kernel log shows the HCI Read Local Version command was sent and the firmware replied with status 0x00 logged ...

CVE-2026-93209 Bluetooth: hci_core: use skb_get() instead of skb_clone() for req_skb

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hcicore: use skbget instead of skbclone for reqskb BT enable fails intermittently with -ETIMEDOUT -110. The kernel log shows the HCI Read Local Version command was sent and the firmware replied with status 0x00 logged ...

EUVD-2026-85938

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hcicore: use skbget instead of skbclone for reqskb BT enable fails intermittently with -ETIMEDOUT -110. The kernel log shows the HCI Read Local Version command was sent and the firmware replied with status 0x00 logged ...

CVE-2026-93209

The Linux kernel contains a vulnerability in the Bluetooth hci_core component where BT enable fails intermittently with -ETIMEDOUT (-110) . The root cause is that hci_send_cmd_sync() uses skb_clone() to copy a sent command into hdev->req_skb ; under memory pressure, this clone operation fails,...

CVE-2026-93209 Bluetooth: hci_core: use skb_get() instead of skb_clone() for req_skb

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hcicore: use skbget instead of skbclone for reqskb BT enable fails intermittently with -ETIMEDOUT -110. The kernel log shows the HCI Read Local Version command was sent and the firmware replied with status 0x00 logged ...

RLSA-2026:70498 Important: kernel security, bug fix, and enhancement update

The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fixes: kernel: crypto: afalg - Disallow concurrent writes in afalgsendmsg CVE-2025-39964 kernel: iommu/vt-d: Clear Present bit before tearing down PASID entry CVE-2026-45894 kernel: crypto: ccp - Fix a...