Security update for the Linux Kernel RT (Live Patch 12 for SUSE Linux Enterprise 15 SP7)

This update for the SUSE Linux Enterprise Kernel 6.4.0-150700.7.40 fixes various security issues: The following security issues were fixed: CVE-2026-23240: tls: Fix race condition in tlsswcancelworktx bsc1262404. CVE-2026-31738: vxlan: validate ND option lengths in vxlannacreate bsc1264060...

RLSA-2026:45114 Important: kernel security update

The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fixes: kernel: fs/notify: call exportfsencodefid with sumount CVE-2025-40237 kernel: scsi: core: Wake up the error handler when final completions race against each other CVE-2026-23110 kernel: rtnetlink...

CVE-2026-64331

A flaw was found in the Linux kernel's usbip virtual USB device controller vudc. This vulnerability, a NULL pointer dereference, occurs when vepallocrequest fails to initialize a vrequest's udc field, causing asynchronous input/output AIO cancellations on the FunctionFS path to arrive without a...

CVE-2026-64269

A flaw was found in the Linux kernel's RDMA Remote Direct Memory Access rtrs-srv module. A remote attacker can exploit this vulnerability by sending a crafted RDMA-Write length during an RTRS READ operation that exceeds the intended buffer size. This out-of-bounds read can lead to information...

CVE-2026-64451

A flaw was found in the Linux kernel's tracing subsystem. A local user, by manipulating function tracer options, can trigger a NULL pointer dereference in the funcsetflag function. This vulnerability occurs when the active tracer is switched away from the function tracer while a process has an...

CVE-2026-64309

A flaw was found in the Linux kernel's crypto: ccp module. This vulnerability arises from improper initialization of Secure Nested Paging SNP when handling the ioctlSNPCOMMIT command. A local userspace process can exploit this by sending specific commands via /dev/sev ioctls. If Secure Encrypted...

CVE-2026-64477

A flaw was found in the Linux kernel. When a CPU is taken offline on systems with Sub-NUMA Clustering SNC enabled, a programming error in the resource control resctrl file system can lead to an out-of-bounds memory access. This issue may cause system instability or crashes. The vulnerability aris...

CVE-2026-64363

A flaw was found in the appleir Human Interface Device HID driver in the Linux kernel. A use-after-free UAF vulnerability can occur if a key is pressed shortly before an Apple infrared IR device is disconnected. This timing issue allows a pending timer to access freed memory, which may lead to...

CVE-2026-64456

A flaw was found in the Linux kernel's virtio-rng driver. A malicious or buggy virtualized hardware random number generator virtio-rng backend can report an overly large data length to the guest operating system. This unchecked length can lead to an out-of-bounds read, causing the driver to acces...

CVE-2026-64452

A flaw was found in the Linux kernel's 6LoWPAN IPv6 over Low-Power Wireless Personal Area Networks component. A race condition in the lowpannhcdouncompression function can lead to a use-after-free vulnerability. This occurs when an NHC Next Header Compression descriptor is deallocated while anoth...

CVE-2026-64285

A flaw was found in the Linux kernel's Kernel-based Virtual Machine KVM component, specifically within the Secure Nested Paging SNP guest functionality. When KVM populates a guest's CPUID Central Processor Unit Identifier data, it may attempt to write to a source memory page that is intended to b...

CVE-2026-64354

A flaw was found in the Linux kernel's BPF Berkeley Packet Filter component. This vulnerability, located in the btfrepeatfields function, is caused by an integer overflow when processing user-supplied BPF Type Format BTF data. A local attacker could exploit this flaw by providing a specially...

CVE-2026-64536

In the Linux kernel, the following vulnerability has been resolved: staging: rtl8723bs: fix OOB reads in isapintkip IE loop The loop in isapintkip iterates over IEs without verifying that enough bytes remain before dereferencing the IE header or its payload: - pIE-elementid and pIE-length are rea...

CVE-2026-64535

In the Linux kernel, the following vulnerability has been resolved: nvmet-tcp: Fix potential UAF when ddgst mismatch Shivam Kumar found via vulnerability testing: When data digest is enabled on an NVMe/TCP connection and a digest mismatch occurs on a non-final H2CDATA PDU during an R2T-based data...

CVE-2026-64532

In the Linux kernel, the following vulnerability has been resolved: fs/ntfs3: bound NTFSDE view.dataoff in UpdateRecordDataRoot,Allocation In doaction's UpdateRecordDataRoot fslog.c:3489 and UpdateRecordDataAllocation fslog.c:3697 cases, the memmove destination is Add2Ptre, le16tocpue-view.dataof...

CVE-2026-64531

In the Linux kernel, the following vulnerability has been resolved: net: openvswitch: reject oversized nested action attrs Open vSwitch stores generated flow actions as nlattrs, whose nlalen field is u16. Commit a1e64addf3ff "net: openvswitch: remove misbehaving actions length check" allowed the...

CVE-2026-64533

In the Linux kernel, the following vulnerability has been resolved: fs/ntfs3: validate lcnsfollow in logreplay conversion logreplay converts DIRPAGEENTRY32 records into DIRPAGEENTRY records when replaying version 0 restart tables. During this conversion, the memmove length is derived directly fro...

UBUNTU-CVE-2026-64535

In the Linux kernel, the following vulnerability has been resolved: nvmet-tcp: Fix potential UAF when ddgst mismatch Shivam Kumar found via vulnerability testing: When data digest is enabled on an NVMe/TCP connection and a digest mismatch occurs on a non-final H2CDATA PDU during an R2T-based data...

UBUNTU-CVE-2026-64533

In the Linux kernel, the following vulnerability has been resolved: fs/ntfs3: validate lcnsfollow in logreplay conversion logreplay converts DIRPAGEENTRY32 records into DIRPAGEENTRY records when replaying version 0 restart tables. During this conversion, the memmove length is derived directly fro...

UBUNTU-CVE-2026-64531

In the Linux kernel, the following vulnerability has been resolved: net: openvswitch: reject oversized nested action attrs Open vSwitch stores generated flow actions as nlattrs, whose nlalen field is u16. Commit a1e64addf3ff "net: openvswitch: remove misbehaving actions length check" allowed the...