CVE-2026-17504: Integer Underflow (Wrap or Wraparound)

IBM PowerVM Hypervisor FW1120.00 through FW1120.01, FW1110.00 through FW1110.31, FW1060.00 through FW1060.81, and FW950.00 through FW950.H3 is affected by a vulnerability in the partition firmware runtime. An attacker with root access to a partition can send a specially crafted request to the...

CVE-2026-17503: Improper Input Validation

IBM PowerVM Hypervisor FW1120.00 through FW1120.01, FW1110.00 through FW1110.31, FW1060.00 through FW1060.81, and FW950.00 through FW950.H3 is affected by a vulnerability in the partition firmware runtime boot configuration. An attacker with root access to a partition can maliciously alter...

PT-2026-97807

Name of the Vulnerable Software and Affected Versions IBM PowerVM Hypervisor versions FW1120.00 through FW1120.01 IBM PowerVM Hypervisor versions FW1110.00 through FW1110.31 IBM PowerVM Hypervisor versions FW1060.00 through FW1060.81 IBM PowerVM Hypervisor versions FW950.00 through FW950.H3...

PT-2026-97821

IBM PowerVM Hypervisor FW1120.00 through FW1120.01, FW1110.00 through FW1110.31, and FW1060.00 through FW1060.81 is affected by a vulnerability in a hypervisor call interface. An attacker with root access to a guest partition can read a limited amount of hypervisor memory, potentially exposing...

CVE-2026-18870: Out-of-bounds Read

IBM PowerVM Hypervisor FW1120.00 through FW1120.01, FW1110.00 through FW1110.31, FW1060.00 through FW1060.81, and FW950.00 through FW950.H3 could allow a remote attacker to obtain sensitive information due to an out-of-bounds read...

CVE-2026-17511: Improper Removal of Sensitive Information Before Storage or Transfer

IBM PowerVM Hypervisor FW1120.00 through FW1120.01, FW1110.00 through FW1110.31, FW1060.00 through FW1060.81, and FW950.00 through FW950.H3 is affected by a vulnerability in the partition resource dump interface. An attacker with authenticated administrator-level access to the HMC or service...

CVE-2026-17413: Improper Validation of Array Index

IBM PowerVM Hypervisor FW1120.00 through FW1120.01, FW1110.00 through FW1110.31, FW1060.00 through FW1060.81, and FW950.00 through FW950.H3 is affected by a vulnerability in the RTAS firmware-to-OS interface. An attacker with administrator-level root access to a logical partition can send a...

PT-2026-97808

Name of the Vulnerable Software and Affected Versions IBM PowerVM Hypervisor versions FW1120.00 through FW1120.01 IBM PowerVM Hypervisor versions FW1110.00 through FW1110.31 IBM PowerVM Hypervisor versions FW1060.00 through FW1060.81 IBM PowerVM Hypervisor versions FW950.00 through FW950.H3...

Security Bulletin: This Power System update is being released to address CVE-2026-19492

Summary Power Systems Firmware is affected by a vulnerability in a hypervisor call interface. An attacker with root access to a guest partition can read a limited amount of hypervisor memory, potentially exposing sensitive data belonging to the hypervisor or other guest partitions hosted on the...

Security Bulletin: This Power System update is being released to address CVE-2026-17511

Summary Power Systems Firmware is affected by a vulnerability in the partition resource dump interface. An attacker with authenticated administrator-level access to the HMC or service processor can obtain a limited snapshot of partition processor state. Successful exploitation results in a...

Security Bulletin: This Power System update is being released to address CVE-2026-18870

Summary PowerVM Hypervisor could allow a remote attacker to obtain sensitive information due to an out-of-bounds read. Vulnerability Details CVEID:CVE-2026-18870 DESCRIPTION: PowerVM Hypervisor could allow a remote attacker to obtain sensitive information due to an out-of-bounds read. CWE:CWE-125...

Security Bulletin: This Power System update is being released to address CVE-2026-17503

Summary Power Systems Firmware is affected by a vulnerability in the partition firmware runtime boot configuration. An attacker with root access to a partition can maliciously alter partition nvram, causing the partition to fail to boot. This condition persists until operator intervention —...

Security Bulletin: This Power System update is being released to address CVE-2026-17504

Summary Power Systems Firmware is affected by a vulnerability in the partition firmware runtime. An attacker with root access to a partition can send a specially crafted request to the partition firmware runtime, causing it to crash with possible memory corruption Vulnerability Details...

Security Bulletin: This Power System update is being released to address CVE-2026-17413

Summary Power Systems Firmware is affected by a vulnerability in the RTAS firmware-to-OS interface. An attacker with administrator-level root access to a logical partition can send a specially crafted request to partition firmware, causing the partition to crash and become unavailable. Other...

AlmaLinux 9 : microcode_ctl (ALSA-2026:68011)

The remote AlmaLinux 9 host has a package installed that is affected by multiple vulnerabilities as referenced in the ALSA-2026:68011 advisory. kernel: hypervisor: Intel Processors: Privilege escalation in Ring 0 via improper value handling CVE-2025-35973 kernel: microcodectl: Intel Xeon 6...

RockyLinux 10 : microcode_ctl (RLSA-2026:67979)

The remote RockyLinux 10 host has a package installed that is affected by multiple vulnerabilities as referenced in the RLSA-2026:67979 advisory. kernel: hypervisor: Intel Processors: Privilege escalation in Ring 0 via improper value handling CVE-2025-35973 kernel: microcodectl: Intel Xeon 6...

ALSA-2026:67979 Important: microcode_ctl security, bug fix, and enhancement update

The microcodectl packages provide microcode updates for Intel and AMD processors. Security Fixes: kernel: hypervisor: Intel Processors: Privilege escalation in Ring 0 via improper value handling CVE-2025-35973 kernel: microcodectl: Intel Xeon 6 Processors: Privilege escalation via improper memory...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: x86, relocs: Ignore relocations in the .notes section. When building with CONFIGXENPV=y, .text symbols are emitted into the .notes section so that Xen can find the “startupxen” entry point. This information is used before booting...

Astra Linux – Vulnerability in Linux 5.10, Linux, Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: net/iucv: Fixed the size of interrupt data iucvirqdata needs to be 4 bytes larger. These bytes are not used by the iucv module, but are written by the z/VM hypervisor in case a CPU is deconfigured. Reported as: BUG...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: PCI: hv: Fixed a crash in hvpcirestoremsimsg during hibernation. When a Linux virtual machine with a assigned PCI device runs on Hyper-V, if the PCI device driver is not yet loaded i.e., MSI-X/MSI is not enabled on the device,...