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...

SUSE CVE-2026-90255

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...

USN-8793-1: Linux kernel (Azure CVM) vulnerabilities

Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - Bluetooth drivers; - GPU drivers; - Hardware monitoring drivers; - SPI subsystem; - NTFS3 file system; - iouring...

OESA-2026-3987 kernel security update

The Linux Kernel, the operating system core itself. Security Fixes: In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hciconn: Fix null ptr deref in hciabortconn hciabortconn read hciskbeventhdev-sentcmd when a connection was pending, but hdev-sentcmd can be NULL whil...

SUSE CVE-2026-89774

In the Linux kernel, the following vulnerability has been resolved: 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. conn-sk and parent sk is currently accessed without either, and...

SUSE CVE-2026-19774

BlueZ A2DP Stack-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of BlueZ. An attacker must first obtain the ability to pair a malicious Bluetooth device with the target system in...

SUSE CVE-2026-90087

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 ...

SUSE CVE-2026-90088

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...

SUSE CVE-2026-90090

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,...

SUSE CVE-2026-90091

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...

SUSE CVE-2026-90092

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: reject accept queue add unless BTLISTEN New sk should not be added to parent socket accept queue after last l2capsockcleanuplisten has run in l2capsockteardowncb and state set to BTCLOSED, as that can result to...

SUSE CVE-2026-90093

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...

SUSE CVE-2026-90251

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...

SUSE CVE-2026-90252

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: MGMT: free the HCI command when it is cancelled mgmthcicmdsync queues the pending command with a NULL destroy callback, so it is only freed if sendhcicmdsync runs. A cancelled entry is leaked, as hcicmdsynccancelentry...

SUSE CVE-2026-90253

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: MGMT: free the mesh send cancel command when it is cancelled meshsendcancel queues the pending command with a NULL destroy callback, so it is only freed if sendcancel runs. A cancelled entry is leaked, as...

SUSE CVE-2026-90254

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...

SUSE CVE-2026-90256

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: use protolock for l2capdata to fix l2capdisconnind hciconn::l2capdata is accessed without locks in l2capdisconnind via hciconntimeout discwork - hciprotodisconnind - l2capdisconnind. This is UAF if the l2capconn...

ROS-20260918-73-0030

The vulnerability in the net/bluetooth/mgmt.c module of the Linux operating system is related to buffer overflow attacks. Exploiting this vulnerability can allow an attacker to cause a service failure...

Linux Distros Unpatched Vulnerability : CVE-2026-90255

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Bluetooth: hciconn: fix the SCO setup context lifetime hcisetupsync queues a connhandlet with a NULL destroy callback, so the context is only freed if...

Linux Distros Unpatched Vulnerability : CVE-2026-90253

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Bluetooth: MGMT: free the mesh send cancel command when it is cancelled meshsendcancel queues the pending command with a NULL destroy callback, so it is only...