- What: Multiple vulnerabilities have been discovered in the Linux kernel affecting Ubuntu systems and AMD processors.
- Impact: A local attacker with hypervisor access could overwrite SEV-SNP guest memory, leading to data integrity loss, or infer data from previous stores, potentially leaking privileged information.
- Affected: Linux kernel, Ubuntu, and some AMD processors.
- CVE: CVE-2024-36331, CVE-2024-36350, CVE-2024-36357, CVE-2025-38730
vulnerability Ubuntu: (Multiple Advisories) (CVE-2025-38730): Linux kernel vulnerabilities Try Surface Command Back to search Severity CVSS Published Added Modified 7 (AV:L/AC:L/Au:S/C:C/I:C/A:C) Sep 4, 2025 Feb 12, 2026 Feb 13, 2026 Severity 7 CVSS (AV:L/AC:L/Au:S/C:C/I:C/A:C) Published Sep 4, 2025 Added Feb 12, 2026 Modified Feb 13, 2026 Description It was discovered that improper initialization of CPU cache memory could allow a local attacker with hypervisor access to overwrite SEV-SNP guest memory resulting in loss of data integrity. (CVE-2024-36331) Oleksii Oleksenko, Cedric Fournet, Jana Hofmann, Boris Köpf, Stavros Volos, and Flavien Solt discovered that some AMD processors may allow an attacker to infer data from previous stores, potentially resulting in the leakage of privileged information. A local attacker could possibly use this to expose sensitive information. (CVE-2024-36350, CVE-2024-36357) 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: - ARM32 architecture; - ARM64 architecture; - MIPS architecture; - PA-RISC architecture; - PowerPC architecture; - RISC-V architecture; - S390 architecture; - x86 architecture; - Block layer subsystem; - Cryptographic API; - Compute Acceleration Framework; - ACPI drivers; - Serial ATA and Parallel ATA drivers; - ATM drivers; - Drivers core; - ATA over ethernet (AOE) driver; - DRBD Distributed Replicated Block Device drivers; - Network block device driver; - Ublk userspace block driver; - Bluetooth drivers; - Bus devices; - Character device driver; - TPM device driver; - Clock framework and drivers; - Data acquisition framework and drivers; - CPU frequency scaling framework; - Hardware crypto device drivers; - Device frequency scaling framework; - Buffer Sharing and Synchronization framework; - DMA engine subsystem; - EDAC drivers; - Arm Firmware Framework for ARMv8-A(FFA); - ARM SCMI message protocol; - FPGA Framework; - GPU drivers; - HID subsystem; - Hardware monitoring drivers; - HW tracing; - I2C subsystem; - I3C subsystem; - IIO subsystem; - InfiniBand drivers; - Input Device core drivers; - Input Device (Miscellaneous) drivers; - IOMMU subsystem; - IRQ chip drivers; - MCB driver; - Multiple devices driver; - Media drivers; - Multifunction device drivers; - Microchip PCI driver; - Intel Management Engine Interface driver; - PCI Endpoint Test driver; - TI TPS6594 PFSM driver; - VMware VMCI Driver; - MMC subsystem; - MTD block device drivers; - Network drivers; - Mellanox network drivers; - STMicroelectronics network drivers; - NVDIMM (Non-Volatile Memory Device) drivers; - NVME drivers; - PCI subsystem; - Amlogic Meson DDR PMU; - PHY drivers; - Pin controllers subsystem; - x86 platform drivers; - Power supply drivers; - Powercap sysfs driver; - PTP clock framework; - PWM drivers; - RapidIO drivers; - Voltage and Current Regulator drivers; - Remote Processor subsystem; - S/390 drivers; - SCSI subsystem; - ASPEED SoC drivers; - QCOM SoC drivers; - Samsung SoC drivers; - SPI subsystem; - small TFT LCD display modules; - Media staging drivers; - TCM subsystem; - Trusted Execution Environment drivers; - Thunderbolt and USB4 drivers; - TTY drivers; - UFS subsystem; - Cadence USB3 driver; - ChipIdea USB driver; - USB Device Class drivers; - USB core drivers; - DesignWare USB3 driver; - USB Gadget drivers; - USB Host Controller drivers; - Renesas USBHS Controller drivers; - USB Type-C support driver; - USB Type-C Connector System Software Interface driver; - VFIO drivers; - Virtio Host (VHOST) subsystem; - Backlight driver; - Framebuffer layer; - TSM Common Guest driver; - Virtio drivers; - Xen hypervisor drivers; - File systems infrastructure; - BTRFS file system; - Ceph distributed file system; - EFI Variable file system; - Ext4 file system; - F2FS file system; - GFS2 file system; - JFFS2 file system; - JFS file system; - Network file system (NFS) client; - Network file system (NFS) server daemon; - NILFS2 file system; - NTFS3 file system; - Overlay file system; - Proc file system; - SMB network file system; - DRM display driver; - Asynchronous Transfer Mode (ATM) subsystem; - BPF subsystem; - Memory Management; - Internal shared memory driver; - LZO compression library; - Mellanox drivers; - padata parallel execution mechanism; - Networking subsytem; - Bluetooth subsystem; - Netfilter; - Network traffic control; - SCTP protocol; - Network sockets; - UDP network protocol; - eXpress Data Path; - XFRM subsystem; - Digital Audio (PCM) driver; - Universal MIDI packet (UMP) support module; - Tracing infrastructure; - User-space API (UAPI); - io_uring subsystem; - IPC subsystem; - Perf events; - Kernel exit() syscall; - IRQ subsystem; - Padata parallel execution mechanism; - Kernel command line parsing driver; - Hibernation control; - RCU subsystem; - Restartable seuqences system call mechanism; - Maple Tree data structure library; - Mem