CVE-2026-90087

CVE-2026-90087 is a Linux kernel Bluetooth (HCI) resource leak affecting the handling of concurrent LE (BLE) connection attempts. When two connections are in BT_CONNECT simultaneously—specifically one on the passive scan path with HCI_CONN_SCANNING set—create_le_conn_complete() may match the wron...

CVE-2026-90087 Bluetooth: do not leak an hci_conn when a second LE connect is rejected

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: do not leak an hciconn when a second LE connect is rejected createleconncomplete decides whether the failed connection is still pending by comparing it against hcilookupleconnect, which returns the first LE connection ...

CVE-2026-90087 Bluetooth: do not leak an hci_conn when a second LE connect is rejected

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: do not leak an hciconn when a second LE connect is rejected createleconncomplete decides whether the failed connection is still pending by comparing it against hcilookupleconnect, which returns the first LE connection ...

PT-2026-94603

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the Bluetooth component where hci setup sync queues a conn handle t with a NULL destroy callback. This leads to a memory leak if the entry is cancelled, as hci cmd syn...

PT-2026-94601

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A memory leak occurs in the Bluetooth MGMT component when a mesh send cancel command is cancelled. The mesh send cancel function queues a pending command with a NULL destroy callback,...

CVE-2026-90251: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: MSFT: validate evtprefixlen against the response length readsupportedfeatures only checks that the response covers the fixed part of struct msftrpreadsupportedfeatures, which is 11 bytes: if skb-len evtprefixlen is an...

CVE-2026-90255: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hciconn: fix the SCO setup context lifetime hcisetupsync queues a connhandlet with a NULL destroy callback, so the context is only freed if hcienhancedsetupsync actually runs. An entry that is cancelled instead is...

CVE-2026-90090: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: btmtksdio: Fix out-of-bounds DMA read in the TX path btmtksdiotxpacket rounds the transfer size up to the SDIO block size of 256 bytes, but hands the host controller the SKB buffer as is: err = sdiowritesbbdev-func,...

CVE-2026-90089: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: btnxpuart: Validate the FW dump header length nxpprocessfwdump pulls the ACL header off the frame and then reads seqnum and buflen from a struct nxpfwdumphdr placed at skb-data, without checking that the ACL payload is...

Linux Distros Unpatched Vulnerability : CVE-2026-89774

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Bluetooth: SCO: hold sk properly in scoconnready sk deref in scoconnready must be done either under conn-lock, or holding a refcount, to avoid concurrent close...

CVE-2026-90093: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: access chan-conn safely in get/setsockopt Since commit b66774b48dd9 "Bluetooth: L2CAP: Fix UAF in channel timeout by holding conn ref" l2capchan::conn has held reference and remains non-NULL also after the...

PT-2026-94439

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A race condition exists in the Bluetooth L2CAP implementation. For L2CAP sockets that do not own sk-sk socket, a lockless read of l2cap pisk-chan within the l2cap sock cleanup listen...

PT-2026-94600

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A memory leak occurs in the Bluetooth MGMT component when an HCI command is cancelled. The mgmt hci cmd sync function queues pending commands with a NULL destroy callback, meaning they a...

PT-2026-94602

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A memory leak occurs in the Bluetooth subsystem when adv timeout expire passes a memory instance allocated via kmalloc to hci cmd sync queue without a destroy callback. This leads to...

CVE-2026-90254: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hcisync: free the advertising instance on the failure and cancel paths advtimeoutexpire hands a kmalloced instance byte to hcicmdsyncqueue with a NULL destroy callback, and only advtimeoutexpiresync frees it. That leak...

CVE-2026-90091: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: fix race l2capsockcleanuplisten vs. putchan For L2CAP sockets without owning sk-sksocket, reading l2cappisk-chan may race against concurrent l2capsockkill - l2capsockputchan. This excludes simultaneous protoops...

PT-2026-94437

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the Bluetooth btnxpuart component where the nxp process fw dump function reads seq num and buf len from a nxp fw dump hdr structure without verifying if the ACL payloa...

CVE-2026-90088: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: RFCOMM: Validate MTU in rfcommapplypn to prevent infinite loop rfcommapplypn accepts the MTU value from a remote PN Parameter Negotiation frame without checking for zero. When the remote peer sends an MTU of zero, d-mt...

PT-2026-94599

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the Bluetooth MSFT implementation where the read supported features function fails to properly validate the evt prefix len variable against the actual response length...

PT-2026-94441

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the Bluetooth L2CAP implementation where l2cap chan::conn retains a reference and remains non-NULL even after the associated hci conn is deleted. Accessing fields such...