mmiotic

mmiotic An exploratory tool for MMIO timing — time any physical address, and dissect the hardware off the latency. Unexpectedly useful for hardware reverse-engineering, hypervisor fingerprinting, side-channelling device activity, register characterization, calibrating malicious triggers, and...

cve-2023-46813-poc

CVE-2023-46813 PoC 1. Apply the patches in the host-patches folder to the Linux host and QEMU. 2. Start an SEV-SNP VM. 3. Run the code in this repo and wait for the message "waiting for the hypervisor to change memory to MMIO". 4. Spam the attack command in QEMU several times. 5. Once the exploit...

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 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...

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...

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-2026-51585

realtek poc rt26cx21x64.sys exploit Realtek PCIe GbE/2.5GbE/5GbE family Overview OID 0xFF816871 maps the nic's mmio bar into the calling proc's virtual addr space, MmLockedPagesSpecifyCache, reachable from um via \.\RealTekCardGUID This IOCTL 0x0012C818 is gated by a registry value DrvMode=4 Once...

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...

AlmaLinux 9.6 [TuxCare] Security Update: kernel / kernel-abi-stablelists / kernel-core / etc Multiple Vulnerabilities (ALMALINUX9.6:CLSA-2025:1766488019)

The AlmaLinux 9.6 host has packages installed that are affected by multiple vulnerabilities as referenced in the TuxCare ALMALINUX9.6:CLSA-2025:1766488019 advisory. - In the Linux kernel, the following vulnerability has been resolved: Squashfs: sanity check symbolic link size Syzkiller reports a...

Rocky Linux 9.6 [TuxCare] Security Update: kernel / kernel-abi-stablelists / kernel-core / etc Multiple Vulnerabilities (ALMALINUX9.6:CLSA-2025:1766488019)

The Rocky Linux 9.6 host has packages installed that are affected by multiple vulnerabilities as referenced in the TuxCare ALMALINUX9.6:CLSA-2025:1766488019 advisory. - In the Linux kernel, the following vulnerability has been resolved: Squashfs: sanity check symbolic link size Syzkiller reports ...

AZL-104229 CVE-2026-98020 affecting package kernel 6.6.157.1-1

In the Linux kernel, the following vulnerability has been resolved: pdscore: fix cmdregs access racing BAR unmap on reset pdscresetprepare and pdscresetdone's pdscmapbars error path clear/iounmap cmdregs without devcmdlock, and pdsclegacyfirmwareupdate's download loop derefs cmdregs after droppin...

CVE-2026-98020

In the Linux kernel, the following vulnerability has been resolved: pdscore: fix cmdregs access racing BAR unmap on reset pdscresetprepare and pdscresetdone's pdscmapbars error path clear/iounmap cmdregs without devcmdlock, and pdsclegacyfirmwareupdate's download loop derefs cmdregs after droppin...

UBUNTU-CVE-2026-98020

In the Linux kernel, the following vulnerability has been resolved: pdscore: fix cmdregs access racing BAR unmap on reset pdscresetprepare and pdscresetdone's pdscmapbars error path clear/iounmap cmdregs without devcmdlock, and pdsclegacyfirmwareupdate's download loop derefs cmdregs after droppin...

CVE-2026-98020 pds_core: fix cmd_regs access racing BAR unmap on reset

In the Linux kernel, the following vulnerability has been resolved: pdscore: fix cmdregs access racing BAR unmap on reset pdscresetprepare and pdscresetdone's pdscmapbars error path clear/iounmap cmdregs without devcmdlock, and pdsclegacyfirmwareupdate's download loop derefs cmdregs after droppin...

EUVD-2026-86673

In the Linux kernel, the following vulnerability has been resolved: pdscore: fix cmdregs access racing BAR unmap on reset pdscresetprepare and pdscresetdone's pdscmapbars error path clear/iounmap cmdregs without devcmdlock, and pdsclegacyfirmwareupdate's download loop derefs cmdregs after droppin...

CVE-2026-98020 pds_core: fix cmd_regs access racing BAR unmap on reset

In the Linux kernel, the following vulnerability has been resolved: pdscore: fix cmdregs access racing BAR unmap on reset pdscresetprepare and pdscresetdone's pdscmapbars error path clear/iounmap cmdregs without devcmdlock, and pdsclegacyfirmwareupdate's download loop derefs cmdregs after droppin...

CVE-2026-98020

A vulnerability exists in the Linux kernel 's pds_core component where a race condition can occur during a BAR unmap on reset. Specifically, the error path in pdsc_map_bars() within pdsc_reset_prepare() and pdsc_reset_done() can clear or iounmap cmd_regs without holding the devcmd_lock. Additiona...

CVE-2026-98020

In the Linux kernel, the following vulnerability has been resolved: pdscore: fix cmdregs access racing BAR unmap on reset pdscresetprepare and pdscresetdone's pdscmapbars error path clear/iounmap cmdregs without devcmdlock, and pdsclegacyfirmwareupdate's download loop derefs cmdregs after droppin...