kernel: Buffer overflow in drivers/xen/sys-hypervisor.c

A flaw was found in the Linux kernel. A buffer overflow vulnerability exists in the Xen hypervisor driver drivers/xen/sys-hypervisor.c. This flaw occurs because the HYPERVISORxenversionXENVERbuildid function returns a build ID that is not properly null-terminated. When the buildidshow function...

Important: kernel6.12

Issue Overview: In the Linux kernel, the following vulnerability has been resolved: bonding: fix use-after-free due to enslave fail after slave array update CVE-2026-23171 In the Linux kernel, the following vulnerability has been resolved: mm/pagewalk: fix race between concurrent split and refaul...

Amazon Linux 2023 : bpftool6.12, kernel6.12, kernel6.12-devel (ALAS2023-2026-1816)

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2026-1816 advisory. In the Linux kernel, the following vulnerability has been resolved: bonding: fix use-after-free due to enslave fail after slave array update CVE-2026-23171 In the Linux kernel, the following...

Important: kernel security update

The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fixes: kernel: smb: client: fix OOB reads parsing symlink error response CVE-2026-31613 kernel: Buffer overflow in drivers/xen/sys-hypervisor.c CVE-2026-31786 kernel: Linux kernel: smb: client: reject...

CVE-2026-10046

Bitdefender Napoca bare-metal hypervisor contains an out-of-bounds write vulnerability in the BIOS INT 0x15 / E820 memory map handler, implemented in napoca/guests/bioshandlers.c. The handler computes a destination offset into the guest RealModeMemory buffer from guest-controlled ES and EDI...

CVE-2026-10047

The Bitdefender Napoca bare-metal hypervisor contains an out-of-bounds write vulnerability in the real-mode hook handler, implemented in napoca/kernel/handler.c. The handler uses a guest-controlled SS:SP-derived offset as an index into the 1MB RealModeMemory buffer without bounds validation. With...

CVE-2026-10047

The Bitdefender Napoca bare-metal hypervisor contains an out-of-bounds write vulnerability in the real-mode hook handler, implemented in napoca/kernel/handler.c. The handler uses a guest-controlled SS:SP-derived offset as an index into the 1MB RealModeMemory buffer without bounds validation. With...

CVE-2026-10046

Bitdefender Napoca bare-metal hypervisor contains an out-of-bounds write vulnerability in the BIOS INT 0x15 / E820 memory map handler, implemented in napoca/guests/bioshandlers.c. The handler computes a destination offset into the guest RealModeMemory buffer from guest-controlled ES and EDI...

EUVD-2026-33944

The Bitdefender Napoca bare-metal hypervisor contains an out-of-bounds write vulnerability in the real-mode hook handler, implemented in napoca/kernel/handler.c. The handler uses a guest-controlled SS:SP-derived offset as an index into the 1MB RealModeMemory buffer without bounds validation. With...

CVE-2026-10047

The CVE-2026-10047 entry describes an out-of-bounds write in Bitdefender Napoca bare-metal hypervisor’s real-mode hook handler (napoca/kernel/handler.c). The vulnerability arises from using a guest-controlled SS:SP-derived offset as an index into the 1MB RealModeMemory buffer without bounds check...

CVE-2026-10046 Out-of-bounds write in Napoca BIOS INT 0x15 E820 memory map handler (VA-13905)

Bitdefender Napoca bare-metal hypervisor contains an out-of-bounds write vulnerability in the BIOS INT 0x15 / E820 memory map handler, implemented in napoca/guests/bioshandlers.c. The handler computes a destination offset into the guest RealModeMemory buffer from guest-controlled ES and EDI...

CVE-2026-10046 Out-of-bounds write in Napoca BIOS INT 0x15 E820 memory map handler (VA-13905)

Bitdefender Napoca bare-metal hypervisor contains an out-of-bounds write vulnerability in the BIOS INT 0x15 / E820 memory map handler, implemented in napoca/guests/bioshandlers.c. The handler computes a destination offset into the guest RealModeMemory buffer from guest-controlled ES and EDI...

CVE-2026-10046

Bitdefender Napoca bare-metal hypervisor contains an out-of-bounds write in the BIOS INT 0x15 / E820 memory map handler (napoca/guests/bios_handlers.c). The handler derives a destination offset into the guest RealModeMemory from guest-controlled ES and EDI without validating the address against t...

PT-2026-45766

Bitdefender Napoca bare-metal hypervisor contains an out-of-bounds write vulnerability in the BIOS INT 0x15 / E820 memory map handler, implemented in napoca/guests/bios handlers.c. The handler computes a destination offset into the guest RealModeMemory buffer from guest-controlled ES and EDI...

PT-2026-45767

Name of the Vulnerable Software and Affected Versions Bitdefender Napoca affected versions not specified Description An out-of-bounds write exists in the real-mode hook handler within the napoca/kernel/handler.c file. The handler utilizes a guest-controlled offset derived from SS:SP as an index...

Bitdefender Napoca 缓冲区错误漏洞

Bitdefender Napoca is a lightweight Type-1 bare-machine virtual machine monitor developed by Bitdefender as open source. Bitdefender Napoca has a buffer error vulnerability, which stems from an out-of-bounds write in the BIOS INT 0x15/E820 memory mapping processing routine. This vulnerability cou...

Bitdefender Napoca 缓冲区错误漏洞

Bitdefender Napoca is a lightweight Type-1 bare-machine virtual machine monitor developed by Bitdefender as open source. Bitdefender Napoca has a buffer error vulnerability, which stems from out-of-bounds write operations in the real-mode hook processing routine. This vulnerability may lead to IR...

PT-2026-45205

Name of the Vulnerable Software and Affected Versions Cloud Hypervisor versions 21.0 through 51.1 Description A guest can cause a use-after-free in the cloud-hypervisor process by submitting two virtio-block descriptor chains that reuse the same head index while asynchronous block I/O such as io...

OPENSUSE-SU-2026:10907-1 cloud-hypervisor-52.0-1.1 on GA media

These are all security issues fixed in the cloud-hypervisor-52.0-1.1 package on the GA media of openSUSE Tumbleweed...

CVE-2026-46147

CVE-2026-46147 concerns the Linux kernel KVM on ARM64, where two bugs in vCPU initialisation can leak pin references to host vCPU/SVE pages and allow observation of a partially initialised vCPU object. The fixes extract a helper for vCPU registration, ensure proper unpinning on error, and enforce...