CVE-2026-90315

A flaw was found in the Linux kernel's PCI/sysfs legacy I/O and memory handlers. These handlers failed to enforce kernel lockdown, a security mechanism designed to prevent privileged users from performing certain low-level operations. A local root user could exploit this by writing to arbitrary I...

CVE-2026-97876

A local attacker with control over GRUB's configuration can bypass lockdown restrictions when booting with Secure Boot and load an unsigned GRUB module, while GRUB continues to report lockdown is enabled. The vulnerability is caused by insufficient validation of the MMIO base address passed to th...

CVE-2026-31787

XSA-487 / CVE-2026-31787 Linux 内核 Xenprivcmd 驱动中的双重释放漏洞 Linux 内核 Xen privcmd 驱动中存在的内核内存双重释放漏洞，可导致绕过内核锁定（安全启动）。利用该漏洞需要 root 级访问权限，这限制了其更广泛的安全影响。 | ---|--- 公告| XSA-487 CVE| CVE-2026-31787 组件| Linux 内核 — Xen privcmd 驱动 公开日期| 2026-04-28 发现者| Atharva Vartak @0xAth4rv...

DEBIAN-CVE-2026-97876

A local attacker with control over GRUB's configuration can bypass lockdown restrictions when booting with Secure Boot and load an unsigned GRUB module, while GRUB continues to report lockdown is enabled. The vulnerability is caused by insufficient validation of the MMIO base address passed to th...

CVE-2026-97876

A local attacker with control over GRUB's configuration can bypass lockdown restrictions when booting with Secure Boot and load an unsigned GRUB module, while GRUB continues to report lockdown is enabled. The vulnerability is caused by insufficient validation of the MMIO base address passed to th...

UBUNTU-CVE-2026-97876

A local attacker with control over GRUB's configuration can bypass lockdown restrictions when booting with Secure Boot and load an unsigned GRUB module, while GRUB continues to report lockdown is enabled. The vulnerability is caused by insufficient validation of the MMIO base address passed to th...

CVE-2026-97876 Bypass of GRUB lockdown restriction in Secure Boot mode via serial command MMIO base address

A local attacker with control over GRUB's configuration can bypass lockdown restrictions when booting with Secure Boot and load an unsigned GRUB module, while GRUB continues to report lockdown is enabled. The vulnerability is caused by insufficient validation of the MMIO base address passed to th...

CVE-2026-97876

A flaw in GRUB2 allows a local attacker with control over the boot configuration to bypass Secure Boot lockdown restrictions. The root cause is the insufficient validation of the MMIO base address passed to the serial command; GRUB fails to verify that the address corresponds to a legitimate UART...

EUVD-2026-91376

A local attacker with control over GRUB's configuration can bypass lockdown restrictions when booting with Secure Boot and load an unsigned GRUB module, while GRUB continues to report lockdown is enabled. The vulnerability is caused by insufficient validation of the MMIO base address passed to th...

CVE-2026-97876

A local attacker with control over GRUB's configuration can bypass lockdown restrictions when booting with Secure Boot and load an unsigned GRUB module, while GRUB continues to report lockdown is enabled. The vulnerability is caused by insufficient validation of the MMIO base address passed to th...

CVE-2026-97876 Bypass of GRUB lockdown restriction in Secure Boot mode via serial command MMIO base address

A local attacker with control over GRUB's configuration can bypass lockdown restrictions when booting with Secure Boot and load an unsigned GRUB module, while GRUB continues to report lockdown is enabled. The vulnerability is caused by insufficient validation of the MMIO base address passed to th...

CVE-2026-97876 Bypass of GRUB lockdown restriction in Secure Boot mode via serial command MMIO base address

A local attacker with control over GRUB's configuration can bypass lockdown restrictions when booting with Secure Boot and load an unsigned GRUB module, while GRUB continues to report lockdown is enabled. The vulnerability is caused by insufficient validation of the MMIO base address passed to th...

PT-2026-104209

A local attacker with control over GRUB's configuration can bypass lockdown restrictions when booting with Secure Boot and load an unsigned GRUB module, while GRUB continues to report lockdown is enabled. The vulnerability is caused by insufficient validation of the MMIO base address passed to th...

Linux Distros Unpatched Vulnerability : CVE-2026-97876

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - A local attacker with control over GRUB's configuration can bypass lockdown restrictions when booting with Secure Boot and load an unsigned GRUB module, while...

CVE-2026-97876: Untrusted Pointer Dereference

A local attacker with control over GRUB's configuration can bypass lockdown restrictions when booting with Secure Boot and load an unsigned GRUB module, while GRUB continues to report lockdown is enabled. The vulnerability is caused by insufficient validation of the MMIO base address passed to th...

Linux Distros Unpatched Vulnerability : CVE-2026-90315

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - PCI/sysfs: Add lockdown checks to legacy I/O and memory handlers Currently, the legacy I/O and memory sysfs handlers do not check...

DEBIAN-CVE-2026-90315

In the Linux kernel, the following vulnerability has been resolved: PCI/sysfs: Add lockdown checks to legacy I/O and memory handlers Currently, the legacy I/O and memory sysfs handlers do not check securitylockeddownLOCKDOWNPCIACCESS, leaving the legacyio and legacymem files unprotected when the...

AZL-103040 CVE-2026-90315 affecting package kernel 6.6.157.1-1

In the Linux kernel, the following vulnerability has been resolved: PCI/sysfs: Add lockdown checks to legacy I/O and memory handlers Currently, the legacy I/O and memory sysfs handlers do not check securitylockeddownLOCKDOWNPCIACCESS, leaving the legacyio and legacymem files unprotected when the...

CVE-2026-90315 PCI/sysfs: Add lockdown checks to legacy I/O and memory handlers

In the Linux kernel, the following vulnerability has been resolved: PCI/sysfs: Add lockdown checks to legacy I/O and memory handlers Currently, the legacy I/O and memory sysfs handlers do not check securitylockeddownLOCKDOWNPCIACCESS, leaving the legacyio and legacymem files unprotected when the...

CVE-2026-90315 PCI/sysfs: Add lockdown checks to legacy I/O and memory handlers

In the Linux kernel, the following vulnerability has been resolved: PCI/sysfs: Add lockdown checks to legacy I/O and memory handlers Currently, the legacy I/O and memory sysfs handlers do not check securitylockeddownLOCKDOWNPCIACCESS, leaving the legacyio and legacymem files unprotected when the...