Jean-Claude Graf, Sandro Rüegge, Ali Hajiabadi, and Kaveh Razavi discovered
that the Linux kernel contained insufficient branch predictor isolation
between a guest and a userspace hypervisor for certain processors. This
flaw is known as VMSCAPE. An attacker in a guest VM could possibly use this
to expose sensitive information from the host OS. (CVE-2025-40300)
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:
- Virtio block driver;
- DMA engine subsystem;
- GPU drivers;
- HSI subsystem;
- Media drivers;
- Network drivers;
- Ethernet team driver;
- TTY drivers;
- Framebuffer layer;
- BTRFS file system;
- Ext4 file system;
- Network file system (NFS) server daemon;
- Timer subsystem;
- DCCP (Datagram Congestion Control Protocol);
- IPv6 networking;
- NET/ROM layer;
- Packet sockets;
- SCTP protocol;
- VMware vSockets driver;
- USB sound devices;
(CVE-2021-47149, CVE-2021-47294, CVE-2021-47319, CVE-2021-47330,
CVE-2021-47589, CVE-2023-52574, CVE-2023-52650, CVE-2024-27078,
CVE-2024-35849, CVE-2024-49924, CVE-2024-50006, CVE-2024-50299,
CVE-2024-53124, CVE-2024-53150, CVE-2024-56767, CVE-2025-21796,
CVE-2025-37785, CVE-2025-37838, CVE-2025-38352, CVE-2025-38617,
CVE-2025-38618)