1. Ubuntu Security Notices
  2. USN-8781-1

USN-8781-1: Linux kernel (NVIDIA Tegra) vulnerabilities

Publication date

18 September 2026

Overview

Several security issues were fixed in the Linux kernel.

Releases

Packages

Details

It was discovered that some Arm processors could complete a broadcast
translation lookaside buffer (TLB) invalidation before memory writes made
through the invalidated translation were globally observed. A local
attacker could possibly use this to write to memory after permission to do
so had been revoked, bypassing memory protections or escalating privileges.
(CVE-2025-10263)

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:

  • ARM64 architecture;
  • User-space API (UAPI);
  • Kernel build system;
  • ARM32 architecture;
  • PowerPC architecture;
  • RISC-V architecture;
  • S390 architecture;
  • User-Mode Linux (UML);
  • x86 architecture;
  • Cryptographic API;
  • Intel NPU Driver;
  • Compute Acceleration...

It was discovered that some Arm processors could complete a broadcast
translation lookaside buffer (TLB) invalidation before memory writes made
through the invalidated translation were globally observed. A local
attacker could possibly use this to write to memory after permission to do
so had been revoked, bypassing memory protections or escalating privileges.
(CVE-2025-10263)

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:

  • ARM64 architecture;
  • User-space API (UAPI);
  • Kernel build system;
  • ARM32 architecture;
  • PowerPC architecture;
  • RISC-V architecture;
  • S390 architecture;
  • User-Mode Linux (UML);
  • x86 architecture;
  • Cryptographic API;
  • Intel NPU Driver;
  • Compute Acceleration Framework;
  • ACPI drivers;
  • Drivers core;
  • DRBD Distributed Replicated Block Device drivers;
  • Rados block device (RBD) driver;
  • Ublk userspace block driver;
  • Compressed RAM block device driver;
  • Bluetooth drivers;
  • Hardware crypto device drivers;
  • CXL (Compute Express Link) drivers;
  • Arm Firmware Framework for ARMv8-A(FFA);
  • EFI core;
  • FPGA Framework;
  • GPU drivers;
  • HID subsystem;
  • Hardware monitoring drivers;
  • I2C subsystem;
  • I3C subsystem;
  • InfiniBand drivers;
  • Input Device core drivers;
  • Input Device (Mouse) drivers;
  • IOMMU subsystem;
  • Multiple devices driver;
  • Media drivers;
  • Fastrpc Driver;
  • Network drivers;
  • Mellanox network drivers;
  • Microsoft Azure Network Adapter (MANA) driver;
  • MediaTek network drivers;
  • NVME drivers;
  • Operating Performance Points (OPP) driver;
  • PCI subsystem;
  • PTP clock framework;
  • RPMSG subsystem;
  • SCSI subsystem;
  • SoundWire subsystem;
  • SPI subsystem;
  • Greybus lights staging drivers;
  • Media staging drivers;
  • NVIDIA Tegra embedded controller (NVEC) staging driver;
  • Realtek RTL8723BS SDIO drivers;
  • TCM subsystem;
  • Trusted Execution Environment drivers;
  • Thunderbolt and USB4 drivers;
  • TTY drivers;
  • USB Gadget drivers;
  • USB Dual Role (OTG-ready) Controller drivers;
  • USB Serial drivers;
  • vDPA drivers;
  • VFIO drivers;
  • Virtio Host (VHOST) subsystem;
  • Virtio drivers;
  • Xen hypervisor drivers;
  • 9P distributed file system;
  • AFS file system;
  • File systems infrastructure;
  • BTRFS file system;
  • Ceph distributed file system;
  • exFAT file system;
  • F2FS file system;
  • GFS2 file system;
  • HFS file system;
  • HFS+ file system;
  • JFS file system;
  • Network file systems library;
  • Network file system (NFS) client;
  • Network file system (NFS) server daemon;
  • NTFS3 file system;
  • OCFS2 file system;
  • OrangeFS file system;
  • SMB network file system;
  • BPF subsystem;
  • File system encryption (fscrypt);
  • Software nodes and device properties;
  • IPv4 networking;
  • KVM subsystem;
  • Mellanox drivers;
  • Memory management;
  • Networking core;
  • Netfilter;
  • Socket messages infrastructure;
  • MediaTek SoC drivers;
  • Sun RPC protocol;
  • Network traffic control;
  • IPv6 networking;
  • Amateur Radio drivers;
  • Bluetooth subsystem;
  • IP tunnels definitions;
  • KCM (Kernel Connection Multiplexor) sockets driver;
  • MultiProtocol Label Switching driver;
  • TCP network protocol;
  • XFRM subsystem;
  • Tracing infrastructure;
  • io_uring subsystem;
  • Control group (cgroup);
  • Perf events;
  • IRQ subsystem;
  • Locking primitives;
  • KProbes tracing;
  • 9P file system network protocol;
  • B.A.T.M.A.N. meshing protocol;
  • Ethernet bridge;
  • CAN network layer;
  • Ceph Core library;
  • Handshake API;
  • HSR network protocol;
  • IFE protocol;
  • L2TP protocol;
  • MAC80211 subsystem;
  • IEEE 802.15.4 subsystem;
  • Multipath TCP;
  • NFC subsystem;
  • Open vSwitch;
  • Phonet protocol;
  • RDS protocol;
  • RxRPC session sockets;
  • SCTP protocol;
  • SMC sockets;
  • TIPC protocol;
  • TLS protocol;
  • Unix domain sockets;
  • VMware vSockets driver;
  • Wireless networking;
  • X.25 network layer;
  • eXpress Data Path;
  • Rust bindings mechanism;
  • AppArmor security module;
  • Key management;
  • Linux Security Modules (LSM) Framework;
  • SELinux security module;
  • ALSA framework;
  • AudioScience HPI driver;
  • Intel ASoC drivers;
  • USB sound devices

Update instructions

After a standard system update you need to reboot your computer to make all the necessary changes.

Learn more about how to get the fixes.

ATTENTION: Due to an unavoidable ABI change the kernel updates have been given a new version number, which requires you to recompile and reinstall all third party kernel modules you might have installed. Unless you manually uninstalled the standard kernel metapackages (e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual, linux-powerpc), a standard system upgrade will automatically perform this as well.

The problem can be corrected by updating your system to the following package versions:

Ubuntu Release Package Version
24.04 LTS noble linux-image-6.8.0-1035-nvidia-tegra –  6.8.0-1035.38
linux-image-6.8.0-1035-nvidia-tegra-rt –  6.8.0-1035.38
linux-image-nvidia-tegra –  6.8.0-1035.38
linux-image-nvidia-tegra-6.8 –  6.8.0-1035.38
linux-image-nvidia-tegra-rt –  6.8.0-1035.38
linux-image-nvidia-tegra-rt-6.8 –  6.8.0-1035.38

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References

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