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Linux Kernel Vulnerabilities Affect Multiple AMD Processors

published 6 months ago

Summary

Some Linux systems using AMD Zen processors are at risk of having malicious code installed on their CPUs, potentially leading to data breaches and system compromise. This issue affects multiple Linux distributions and cloud platforms, including AWS and GCP. To protect your system, update your Linux kernel as soon as possible.

What to do

Update canonical linux-aws-fips to version 6.8.0-1052.55+fips1.
Update canonical linux-fips to version 6.8.0-110.110+fips2.
Update canonical linux-gcp-fips to version 6.8.0-1054.57+fips1.

Affected software

Ecosystem	Vendor	Product	Affected versions
Ubuntu:Pro:FIPS-updates:24.04:LTS	canonical	linux-aws-fips	< 6.8.0-1052.55+fips1 Fix: upgrade to 6.8.0-1052.55+fips1
Ubuntu:Pro:FIPS-updates:24.04:LTS	canonical	linux-fips	< 6.8.0-110.110+fips2 Fix: upgrade to 6.8.0-110.110+fips2
Ubuntu:Pro:FIPS-updates:24.04:LTS	canonical	linux-gcp-fips	< 6.8.0-1054.57+fips1 Fix: upgrade to 6.8.0-1054.57+fips1

Original advisory text

linux-aws-fips, linux-fips, linux-gcp-fips vulnerabilities

Josh Eads, Kristoffer Janke, Eduardo Vela Nava, Tavis Ormandy, and Matteo
Rizzo discovered that some AMD Zen processors did not properly verify the
signature of CPU microcode. This flaw is known as EntrySign. A privileged
attacker could possibly use this issue to cause load malicious CPU
microcode causing loss of integrity and confidentiality.
(CVE-2024-36347)

Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- MIPS architecture;
- PowerPC architecture;
- x86 architecture;
- Block layer subsystem;
- Cryptographic API;
- ACPI drivers;
- Network block device driver;
- Bluetooth drivers;
- Character device driver;
- TPM device driver;
- Clock framework and drivers;
- Data acquisition framework and drivers;
- Hardware crypto device drivers;
- GPU drivers;
- Hardware monitoring drivers;
- InfiniBand drivers;
- Input Device core drivers;
- IOMMU subsystem;
- IRQ chip drivers;
- Macintosh device drivers;
- Multiple devices driver;
- Media drivers;
- Network drivers;
- Mellanox network drivers;
- STMicroelectronics network drivers;
- Ethernet team driver;
- MediaTek network drivers;
- NVME drivers;
- PA-RISC drivers;
- Chrome hardware platform drivers;
- x86 platform drivers;
- Voltage and Current Regulator drivers;
- SCSI subsystem;
- SPI subsystem;
- Media Oriented Systems Transport (MOST) driver;
- Realtek RTL8723BS SDIO drivers;
- TCM subsystem;
- USB Host Controller drivers;
- USB Type-C Connector System Software Interface driver;
- Backlight driver;
- Watchdog drivers;
- BFS file system;
- BTRFS file system;
- Ext4 file system;
- F2FS file system;
- FUSE (File system in Userspace);
- HFS+ file system;
- File systems infrastructure;
- Journaling layer for block devices (JBD2);
- Network file system (NFS) client;
- File system notification infrastructure;
- NTFS3 file system;
- OCFS2 file system;
- SMB network file system;
- BPF subsystem;
- Ethernet bridge;
- io_uring subsystem;
- Locking primitives;
- Scheduler infrastructure;
- Shadow Call Stack mechanism;
- Tracing infrastructure;
- Memory management;
- CAIF protocol;
- Ceph Core library;
- Networking core;
- Ethtool driver;
- Handshake API;
- HSR network protocol;
- IPv4 networking;
- IPv6 networking;
- MAC80211 subsystem;
- Multipath TCP;
- Netfilter;
- NET/ROM layer;
- NFC subsystem;
- Open vSwitch;
- Rose network layer;
- Network traffic control;
- Network sockets;
- Sun RPC protocol;
- Integrity Measurement Architecture(IMA) framework;
- Key management;
- Simplified Mandatory Access Control Kernel framework;
- FireWire sound drivers;
- HD-audio driver;
- Turtle Beach Wavefront ALSA driver;
- STMicroelectronics SoC drivers;
- USB sound devices;
- KVM subsystem;
(CVE-2024-57795, CVE-2025-22022, CVE-2025-22111, CVE-2025-38022,
CVE-2025-38234, CVE-2025-40164, CVE-2025-40325, CVE-2025-68206,
CVE-2025-68254, CVE-2025-68255, CVE-2025-68256, CVE-2025-68257,
CVE-2025-68258, CVE-2025-68259, CVE-2025-68261, CVE-2025-68263,
CVE-2025-68264, CVE-2025-68265, CVE-2025-68266, CVE-2025-68291,
CVE-2025-68325, CVE-2025-68332, CVE-2025-68335, CVE-2025-68336,
CVE-2025-68337, CVE-2025-68344, CVE-2025-68345, CVE-2025-68346,
CVE-2025-68347, CVE-2025-68349, CVE-2025-68354, CVE-2025-68362,
CVE-2025-68363, CVE-2025-68364, CVE-2025-68366, CVE-2025-68367,
CVE-2025-68369, CVE-2025-68371, CVE-2025-68372, CVE-2025-68374,
CVE-2025-68378, CVE-2025-68379, CVE-2025-68380, CVE-2025-68724,
CVE-2025-68727, CVE-2025-68728, CVE-2025-68732, CVE-2025-68733,
CVE-2025-68740, CVE-2025-68741, CVE-2025-68742, CVE-2025-68744,
CVE-2025-68746, CVE-2025-68753, CVE-2025-68755, CVE-2025-68756,
CVE-2025-68757, CVE-2025-68758, CVE-2025-68759, CVE-2025-68763,
CVE-2025-68764, CVE-2025-68765, CVE-2025-68766, CVE-2025-68767,
CVE-2025-68769, CVE-2025-68770, CVE-2025-68771, CVE-2025-68772,
CVE-2025-68773, CVE-2025-68774, CVE-2025-68775, CVE-2025-68776,
CVE-2025-68777, CVE-2025-68778, CVE-2025-68780, CVE-2025-68782,
CVE-2025-68783, CVE-2025-68785, CVE-2025-68786, CVE-2025-68787,
CVE-2025-68788, CVE-2025-68794, CVE-2025-68795, CVE-2025-68796,
CVE-2025-68797, CVE-2025-68798, CVE-2025-68799, CVE-2025-68800,
CVE-2025-68801, CVE-2025-68804, CVE-2025-68806, CVE-2025-68808,
CVE-2025-68809, CVE-2025-68810, CVE-2025-68811, CVE-2025-68813,
CVE-2025-68814, CVE-2025-68815, CVE-2025-68816, CVE-2025-68817,
CVE-2025-68818, CVE-2025-68819, CVE-2025-68820, CVE-2025-68821,
CVE-2025-71064, CVE-2025-71065, CVE-2025-71066, CVE-2025-71067,
CVE-2025-71068, CVE-2025-71069, CVE-2025-71071, CVE-2025-71072,
CVE-2025-71075, CVE-2025-71077, CVE-2025-71078, CVE-2025-71079,
CVE-2025-71081, CVE-2025-71082, CVE-2025-71083, CVE-2025-71084,
CVE-2025-71085, CVE-2025-71086, CVE-2025-71087, CVE-2025-71088,
CVE-2025-71089, CVE-2025-71091, CVE-2025-71093, CVE-2025-71094,
CVE-2025-71095, CVE-2025-71096, CVE-2025-71097, CVE-2025-71098,
CVE-2025-71101, CVE-2025-71102, CVE-2025-71104, CVE-2025-71105,
CVE-2025-71107, CVE-2025-71108, CVE-2025-71109, CVE-2025-71111,
CVE-2025-71112, CVE-2025-71113, CVE-2025-71114, CVE-2025-71116,
CVE-2025-71118, CVE-2025-71119, CVE-2025-71120, CVE-2025-71121,
CVE-2025-71122, CVE-2025-71123, CVE-2025-71125, CVE-2025-71126,
CVE-2025-71127, CVE-2025-71130, CVE-2025-71131, CVE-2025-71132,
CVE-2025-71133, CVE-2025-71135, CVE-2025-71136, CVE-2025-71137,
CVE-2025-71138, CVE-2025-71140, CVE-2025-71141, CVE-2025-71143,
CVE-2025-71144, CVE-2025-71147, CVE-2025-71148, CVE-2025-71149,
CVE-2025-71150, CVE-2025-71151, CVE-2025-71153, CVE-2025-71154,
CVE-2026-23209)

References

https://ubuntu.com/security/notices/USN-8179-2 Vendor Advisory
https://ubuntu.com/security/CVE-2024-36347 Third Party Advisory
https://ubuntu.com/security/CVE-2024-57795 Third Party Advisory
https://ubuntu.com/security/CVE-2025-22022 Third Party Advisory
https://ubuntu.com/security/CVE-2025-22111 Third Party Advisory
https://ubuntu.com/security/CVE-2025-38022 Third Party Advisory
https://ubuntu.com/security/CVE-2025-38234 Third Party Advisory
https://ubuntu.com/security/CVE-2025-40164 Third Party Advisory
https://ubuntu.com/security/CVE-2025-40325 Third Party Advisory
https://ubuntu.com/security/CVE-2025-68206 Third Party Advisory
https://ubuntu.com/security/CVE-2025-68254 Third Party Advisory
https://ubuntu.com/security/CVE-2025-68255 Third Party Advisory
https://ubuntu.com/security/CVE-2025-68256 Third Party Advisory
https://ubuntu.com/security/CVE-2025-68257 Third Party Advisory
https://ubuntu.com/security/CVE-2025-68258 Third Party Advisory
https://ubuntu.com/security/CVE-2025-68259 Third Party Advisory
https://ubuntu.com/security/CVE-2025-68261 Third Party Advisory
https://ubuntu.com/security/CVE-2025-68263 Third Party Advisory
https://ubuntu.com/security/CVE-2025-68264 Third Party Advisory
https://ubuntu.com/security/CVE-2025-68265 Third Party Advisory
https://ubuntu.com/security/CVE-2025-68266 Third Party Advisory
https://ubuntu.com/security/CVE-2025-68291 Third Party Advisory
https://ubuntu.com/security/CVE-2025-68325 Third Party Advisory
https://ubuntu.com/security/CVE-2025-68332 Third Party Advisory
https://ubuntu.com/security/CVE-2025-68335 Third Party Advisory
https://ubuntu.com/security/CVE-2025-68336 Third Party Advisory
https://ubuntu.com/security/CVE-2025-68337 Third Party Advisory
https://ubuntu.com/security/CVE-2025-68344 Third Party Advisory
https://ubuntu.com/security/CVE-2025-68345 Third Party Advisory
https://ubuntu.com/security/CVE-2025-68346 Third Party Advisory
https://ubuntu.com/security/CVE-2025-68347 Third Party Advisory
https://ubuntu.com/security/CVE-2025-68349 Third Party Advisory
https://ubuntu.com/security/CVE-2025-68354 Third Party Advisory
https://ubuntu.com/security/CVE-2025-68362 Third Party Advisory
https://ubuntu.com/security/CVE-2025-68363 Third Party Advisory
https://ubuntu.com/security/CVE-2025-68364 Third Party Advisory
https://ubuntu.com/security/CVE-2025-68366 Third Party Advisory
https://ubuntu.com/security/CVE-2025-68367 Third Party Advisory
https://ubuntu.com/security/CVE-2025-68369 Third Party Advisory
https://ubuntu.com/security/CVE-2025-68371 Third Party Advisory
https://ubuntu.com/security/CVE-2025-68372 Third Party Advisory
https://ubuntu.com/security/CVE-2025-68374 Third Party Advisory
https://ubuntu.com/security/CVE-2025-68378 Third Party Advisory
https://ubuntu.com/security/CVE-2025-68379 Third Party Advisory
https://ubuntu.com/security/CVE-2025-68380 Third Party Advisory
https://ubuntu.com/security/CVE-2025-68724 Third Party Advisory
https://ubuntu.com/security/CVE-2025-68727 Third Party Advisory
https://ubuntu.com/security/CVE-2025-68728 Third Party Advisory
https://ubuntu.com/security/CVE-2025-68732 Third Party Advisory
https://ubuntu.com/security/CVE-2025-68733 Third Party Advisory
https://ubuntu.com/security/CVE-2025-68740 Third Party Advisory
https://ubuntu.com/security/CVE-2025-68741 Third Party Advisory
https://ubuntu.com/security/CVE-2025-68742 Third Party Advisory
https://ubuntu.com/security/CVE-2025-68744 Third Party Advisory
https://ubuntu.com/security/CVE-2025-68746 Third Party Advisory
https://ubuntu.com/security/CVE-2025-68753 Third Party Advisory
https://ubuntu.com/security/CVE-2025-68755 Third Party Advisory
https://ubuntu.com/security/CVE-2025-68756 Third Party Advisory
https://ubuntu.com/security/CVE-2025-68757 Third Party Advisory
https://ubuntu.com/security/CVE-2025-68758 Third Party Advisory
https://ubuntu.com/security/CVE-2025-68759 Third Party Advisory
https://ubuntu.com/security/CVE-2025-68763 Third Party Advisory
https://ubuntu.com/security/CVE-2025-68764 Third Party Advisory
https://ubuntu.com/security/CVE-2025-68765 Third Party Advisory
https://ubuntu.com/security/CVE-2025-68766 Third Party Advisory
https://ubuntu.com/security/CVE-2025-68767 Third Party Advisory
https://ubuntu.com/security/CVE-2025-68769 Third Party Advisory
https://ubuntu.com/security/CVE-2025-68770 Third Party Advisory
https://ubuntu.com/security/CVE-2025-68771 Third Party Advisory
https://ubuntu.com/security/CVE-2025-68772 Third Party Advisory
https://ubuntu.com/security/CVE-2025-68773 Third Party Advisory
https://ubuntu.com/security/CVE-2025-68774 Third Party Advisory
https://ubuntu.com/security/CVE-2025-68775 Third Party Advisory
https://ubuntu.com/security/CVE-2025-68776 Third Party Advisory
https://ubuntu.com/security/CVE-2025-68777 Third Party Advisory
https://ubuntu.com/security/CVE-2025-68778 Third Party Advisory
https://ubuntu.com/security/CVE-2025-68780 Third Party Advisory
https://ubuntu.com/security/CVE-2025-68782 Third Party Advisory
https://ubuntu.com/security/CVE-2025-68783 Third Party Advisory
https://ubuntu.com/security/CVE-2025-68785 Third Party Advisory
https://ubuntu.com/security/CVE-2025-68786 Third Party Advisory
https://ubuntu.com/security/CVE-2025-68787 Third Party Advisory
https://ubuntu.com/security/CVE-2025-68788 Third Party Advisory
https://ubuntu.com/security/CVE-2025-68794 Third Party Advisory
https://ubuntu.com/security/CVE-2025-68795 Third Party Advisory
https://ubuntu.com/security/CVE-2025-68796 Third Party Advisory
https://ubuntu.com/security/CVE-2025-68797 Third Party Advisory
https://ubuntu.com/security/CVE-2025-68798 Third Party Advisory
https://ubuntu.com/security/CVE-2025-68799 Third Party Advisory
https://ubuntu.com/security/CVE-2025-68800 Third Party Advisory
https://ubuntu.com/security/CVE-2025-68801 Third Party Advisory
https://ubuntu.com/security/CVE-2025-68804 Third Party Advisory
https://ubuntu.com/security/CVE-2025-68806 Third Party Advisory
https://ubuntu.com/security/CVE-2025-68808 Third Party Advisory
https://ubuntu.com/security/CVE-2025-68809 Third Party Advisory
https://ubuntu.com/security/CVE-2025-68810 Third Party Advisory
https://ubuntu.com/security/CVE-2025-68811 Third Party Advisory
https://ubuntu.com/security/CVE-2025-68813 Third Party Advisory
https://ubuntu.com/security/CVE-2025-68814 Third Party Advisory
https://ubuntu.com/security/CVE-2025-68815 Third Party Advisory
https://ubuntu.com/security/CVE-2025-68816 Third Party Advisory
https://ubuntu.com/security/CVE-2025-68817 Third Party Advisory
https://ubuntu.com/security/CVE-2025-68818 Third Party Advisory
https://ubuntu.com/security/CVE-2025-68819 Third Party Advisory
https://ubuntu.com/security/CVE-2025-68820 Third Party Advisory
https://ubuntu.com/security/CVE-2025-68821 Third Party Advisory
https://ubuntu.com/security/CVE-2025-71064 Third Party Advisory
https://ubuntu.com/security/CVE-2025-71065 Third Party Advisory
https://ubuntu.com/security/CVE-2025-71066 Third Party Advisory
https://ubuntu.com/security/CVE-2025-71067 Third Party Advisory
https://ubuntu.com/security/CVE-2025-71068 Third Party Advisory
https://ubuntu.com/security/CVE-2025-71069 Third Party Advisory
https://ubuntu.com/security/CVE-2025-71071 Third Party Advisory
https://ubuntu.com/security/CVE-2025-71072 Third Party Advisory
https://ubuntu.com/security/CVE-2025-71075 Third Party Advisory
https://ubuntu.com/security/CVE-2025-71077 Third Party Advisory
https://ubuntu.com/security/CVE-2025-71078 Third Party Advisory
https://ubuntu.com/security/CVE-2025-71079 Third Party Advisory
https://ubuntu.com/security/CVE-2025-71081 Third Party Advisory
https://ubuntu.com/security/CVE-2025-71082 Third Party Advisory
https://ubuntu.com/security/CVE-2025-71083 Third Party Advisory
https://ubuntu.com/security/CVE-2025-71084 Third Party Advisory
https://ubuntu.com/security/CVE-2025-71085 Third Party Advisory
https://ubuntu.com/security/CVE-2025-71086 Third Party Advisory
https://ubuntu.com/security/CVE-2025-71087 Third Party Advisory
https://ubuntu.com/security/CVE-2025-71088 Third Party Advisory
https://ubuntu.com/security/CVE-2025-71089 Third Party Advisory
https://ubuntu.com/security/CVE-2025-71091 Third Party Advisory
https://ubuntu.com/security/CVE-2025-71093 Third Party Advisory
https://ubuntu.com/security/CVE-2025-71094 Third Party Advisory
https://ubuntu.com/security/CVE-2025-71095 Third Party Advisory
https://ubuntu.com/security/CVE-2025-71096 Third Party Advisory
https://ubuntu.com/security/CVE-2025-71097 Third Party Advisory
https://ubuntu.com/security/CVE-2025-71098 Third Party Advisory
https://ubuntu.com/security/CVE-2025-71101 Third Party Advisory
https://ubuntu.com/security/CVE-2025-71102 Third Party Advisory
https://ubuntu.com/security/CVE-2025-71104 Third Party Advisory
https://ubuntu.com/security/CVE-2025-71105 Third Party Advisory
https://ubuntu.com/security/CVE-2025-71107 Third Party Advisory
https://ubuntu.com/security/CVE-2025-71108 Third Party Advisory
https://ubuntu.com/security/CVE-2025-71109 Third Party Advisory
https://ubuntu.com/security/CVE-2025-71111 Third Party Advisory
https://ubuntu.com/security/CVE-2025-71112 Third Party Advisory
https://ubuntu.com/security/CVE-2025-71113 Third Party Advisory
https://ubuntu.com/security/CVE-2025-71114 Third Party Advisory
https://ubuntu.com/security/CVE-2025-71116 Third Party Advisory
https://ubuntu.com/security/CVE-2025-71118 Third Party Advisory
https://ubuntu.com/security/CVE-2025-71119 Third Party Advisory
https://ubuntu.com/security/CVE-2025-71120 Third Party Advisory
https://ubuntu.com/security/CVE-2025-71121 Third Party Advisory
https://ubuntu.com/security/CVE-2025-71122 Third Party Advisory
https://ubuntu.com/security/CVE-2025-71123 Third Party Advisory
https://ubuntu.com/security/CVE-2025-71125 Third Party Advisory
https://ubuntu.com/security/CVE-2025-71126 Third Party Advisory
https://ubuntu.com/security/CVE-2025-71127 Third Party Advisory
https://ubuntu.com/security/CVE-2025-71130 Third Party Advisory
https://ubuntu.com/security/CVE-2025-71131 Third Party Advisory
https://ubuntu.com/security/CVE-2025-71132 Third Party Advisory
https://ubuntu.com/security/CVE-2025-71133 Third Party Advisory
https://ubuntu.com/security/CVE-2025-71135 Third Party Advisory
https://ubuntu.com/security/CVE-2025-71136 Third Party Advisory
https://ubuntu.com/security/CVE-2025-71137 Third Party Advisory
https://ubuntu.com/security/CVE-2025-71138 Third Party Advisory
https://ubuntu.com/security/CVE-2025-71140 Third Party Advisory
https://ubuntu.com/security/CVE-2025-71141 Third Party Advisory
https://ubuntu.com/security/CVE-2025-71143 Third Party Advisory
https://ubuntu.com/security/CVE-2025-71144 Third Party Advisory
https://ubuntu.com/security/CVE-2025-71147 Third Party Advisory
https://ubuntu.com/security/CVE-2025-71148 Third Party Advisory
https://ubuntu.com/security/CVE-2025-71149 Third Party Advisory
https://ubuntu.com/security/CVE-2025-71150 Third Party Advisory
https://ubuntu.com/security/CVE-2025-71151 Third Party Advisory
https://ubuntu.com/security/CVE-2025-71153 Third Party Advisory
https://ubuntu.com/security/CVE-2025-71154 Third Party Advisory
https://ubuntu.com/security/CVE-2026-23209 Third Party Advisory

Timeline

Published17 Apr 2026

Updated9 Jun 2026

First seen9 Jun 2026

Sources

USN-8179-2 · OSV

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