EUVD-2026-24892

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: Fix null-ptr-deref on l2capsockreadycb Before using sk pointer, check if it is null. Fix the following: KASAN: null-ptr-deref in range 0x0000000000000260-0x0000000000000267 CPU: 0 UID: 0 PID: 5985 Comm:...

EUVD-2026-24895

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: Validate PDU length before reading SDU length in l2capecreddatarcv l2capecreddatarcv reads the SDU length field from skb-data using getunalignedle16 without first verifying that skb contains at least...

CVE-2026-31512 Bluetooth: L2CAP: Validate PDU length before reading SDU length in l2cap_ecred_data_rcv()

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: Validate PDU length before reading SDU length in l2capecreddatarcv l2capecreddatarcv reads the SDU length field from skb-data using getunalignedle16 without first verifying that skb contains at least...

CVE-2026-31499 Bluetooth: L2CAP: Fix deadlock in l2cap_conn_del()

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: Fix deadlock in l2capconndel l2capconndel calls canceldelayedworksync for both infotimer and idaddrtimer while holding conn-lock. However, the work functions l2capinfotimeout and l2capconnupdateidaddr both acqui...

CVE-2026-31499 Bluetooth: L2CAP: Fix deadlock in l2cap_conn_del()

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: Fix deadlock in l2capconndel l2capconndel calls canceldelayedworksync for both infotimer and idaddrtimer while holding conn-lock. However, the work functions l2capinfotimeout and l2capconnupdateidaddr both acqui...

CVE-2026-31498 Bluetooth: L2CAP: Fix ERTM re-init and zero pdu_len infinite loop

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: Fix ERTM re-init and zero pdulen infinite loop l2capconfigreq processes CONFIGREQ for channels in BTCONNECTED state to support L2CAP reconfiguration e.g. MTU changes. However, since both CONFINPUTDONE and...

Linux Distros Unpatched Vulnerability : CVE-2026-31512

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Bluetooth: L2CAP: Validate PDU length before reading SDU length in l2capecreddatarcv l2capecreddatarcv reads the SDU length field from skb-data using...

PT-2026-34418

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A stack-out-of-bounds read exists in the Bluetooth L2CAP component. The function l2cap ecred conn req allocates a local stack buffer pdu to hold up to 5 Source Channel IDs SCIDs. When a...

Unity Linux 20.1070a Security Update: kernel (UTSA-2026-013029)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-013029 advisory. In the Linux kernel, the following vulnerability has been resolved: Bluetooth: bcsp: receive data only if registered Currently, bcsprecv can be called even when the...

Unity Linux 20.1050e / 20.1070e Security Update: kernel (UTSA-2026-010800)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-010800 advisory. In the Linux kernel, the following vulnerability has been resolved: Bluetooth: bcsp: receive data only if registered Currently, bcsprecv can be called even when the...

Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-007398)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-007398 advisory. In the Linux kernel, the following vulnerability has been resolved: Bluetooth: RFCOMM: avoid leaving dangling sk pointer in rfcommsockalloc btsockalloc attaches...

Bluetooth: SCO: Fix use-after-free in sco_recv_frame() due to missing sock_hold

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K000160628: Linux kernel vulnerability CVE-2026-23395

Security Advisory Description In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: Fix accepting multiple L2CAPECREDCONNREQ Currently the code attempts to accept requests regardless of the command identifier which may cause multiple requests to be marked as pendin...

Linux Distros Unpatched Vulnerability : CVE-2026-31393

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Bluetooth: L2CAP: Validate L2CAPINFORSP payload length before access l2capinformationrsp checks that cmdlen covers the fixed l2capinforsp header type + result, ...

CVE-2026-31393

A flaw was found in the Linux kernel's Bluetooth L2CAP Logical Link Control and Adaptation Protocol component. A remote attacker could send a specially crafted, truncated L2CAP information response L2CAPINFORSP packet. This insufficient validation of the payload length before accessing data leads...

CVE-2026-23461

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: Fix use-after-free in l2capunregisteruser After commit ab4eedb790ca "Bluetooth: L2CAP: Fix corrupted list in hcichandel", l2capconndel uses conn-lock to protect access to conn-users. However, l2capregisteruser a...

UBUNTU-CVE-2026-31393

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: Validate L2CAPINFORSP payload length before access l2capinformationrsp checks that cmdlen covers the fixed l2capinforsp header type + result, 4 bytes but then reads rsp-data without verifying that the payload is...

CVE-2026-31393 Bluetooth: L2CAP: Validate L2CAP_INFO_RSP payload length before access

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: Validate L2CAPINFORSP payload length before access l2capinformationrsp checks that cmdlen covers the fixed l2capinforsp header type + result, 4 bytes but then reads rsp-data without verifying that the payload is...

CVE-2026-23671

Concurrent execution using shared resource with improper synchronization 'race condition' in Windows Bluetooth RFCOM Protocol Driver allows an authorized attacker to elevate privileges locally...

SUSE CVE-2026-23395

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: Fix accepting multiple L2CAPECREDCONNREQ Currently the code attempts to accept requests regardless of the command identifier which may cause multiple requests to be marked as pending FLAGDEFERSETUP which can cau...