==========================================================================
Ubuntu Security Notice USN-8162-1
April 09, 2026

linux-nvidia-tegra-5.15 vulnerabilities
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 20.04 LTS

Summary:

Several security issues were fixed in the Linux kernel.

Software Description:
- linux-nvidia-tegra-5.15: Linux kernel for NVIDIA Tegra systems

Details:

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;
   - Block layer subsystem;
   - Cryptographic API;
   - Drivers core;
   - Bluetooth drivers;
   - DMA engine subsystem;
   - GPU drivers;
   - HID subsystem;
   - Intel Trace Hub HW tracing drivers;
   - IIO ADC drivers;
   - IRQ chip drivers;
   - Modular ISDN driver;
   - LED subsystem;
   - UACCE accelerator framework;
   - Ethernet bonding driver;
   - Network drivers;
   - STMicroelectronics network drivers;
   - Ethernet team driver;
   - NVME drivers;
   - PHY drivers;
   - SLIMbus drivers;
   - W1 Dallas's 1-wire bus driver;
   - Xen hypervisor drivers;
   - BTRFS file system;
   - Ext4 file system;
   - Network file system (NFS) client;
   - Network file system (NFS) server daemon;
   - NTFS3 file system;
   - SMB network file system;
   - NFC subsystem;
   - BPF subsystem;
   - IRQ subsystem;
   - Memory management;
   - Bluetooth subsystem;
   - CAN network layer;
   - Networking core;
   - IPv4 networking;
   - IPv6 networking;
   - L2TP protocol;
   - Netfilter;
   - NET/ROM layer;
   - Network traffic control;
   - SCTP protocol;
   - TLS protocol;
   - XFRM subsystem;
   - Creative Sound Blaster X-Fi driver;
   - USB sound devices;
(CVE-2023-53421, CVE-2023-53520, CVE-2023-53662, CVE-2023-54207,
CVE-2025-37849, CVE-2025-38057, CVE-2025-38125, CVE-2025-38232,
CVE-2025-38408, CVE-2025-38591, CVE-2025-40149, CVE-2025-40164,
CVE-2025-68211, CVE-2025-68340, CVE-2025-68365, CVE-2025-68725,
CVE-2025-68817, CVE-2025-71080, CVE-2025-71163, CVE-2025-71185,
CVE-2025-71186, CVE-2025-71188, CVE-2025-71190, CVE-2025-71191,
CVE-2025-71194, CVE-2025-71196, CVE-2025-71197, CVE-2025-71199,
CVE-2026-22997, CVE-2026-22998, CVE-2026-22999, CVE-2026-23001,
CVE-2026-23003, CVE-2026-23011, CVE-2026-23026, CVE-2026-23033,
CVE-2026-23037, CVE-2026-23038, CVE-2026-23049, CVE-2026-23056,
CVE-2026-23058, CVE-2026-23060, CVE-2026-23061, CVE-2026-23063,
CVE-2026-23064, CVE-2026-23071, CVE-2026-23073, CVE-2026-23074,
CVE-2026-23075, CVE-2026-23076, CVE-2026-23078, CVE-2026-23080,
CVE-2026-23083, CVE-2026-23084, CVE-2026-23085, CVE-2026-23087,
CVE-2026-23089, CVE-2026-23090, CVE-2026-23091, CVE-2026-23093,
CVE-2026-23095, CVE-2026-23096, CVE-2026-23097, CVE-2026-23098,
CVE-2026-23099, CVE-2026-23101, CVE-2026-23103, CVE-2026-23105,
CVE-2026-23108, CVE-2026-23111, CVE-2026-23119, CVE-2026-23120,
CVE-2026-23121, CVE-2026-23124, CVE-2026-23125, CVE-2026-23128,
CVE-2026-23133, CVE-2026-23145, CVE-2026-23146, CVE-2026-23150,
CVE-2026-23164, CVE-2026-23167, CVE-2026-23170, CVE-2026-23209)

Update instructions:

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

Ubuntu 20.04 LTS
   linux-image-5.15.0-1057-nvidia-tegra  5.15.0-1057.57~20.04.1
                                   Available with Ubuntu Pro
   linux-image-5.15.0-1057-nvidia-tegra-rt  5.15.0-1057.57~20.04.1
                                   Available with Ubuntu Pro
   linux-image-nvidia-tegra        5.15.0.1057.57~20.04.1
                                   Available with Ubuntu Pro
   linux-image-nvidia-tegra-5.15   5.15.0.1057.57~20.04.1
                                   Available with Ubuntu Pro
   linux-image-nvidia-tegra-rt     5.15.0.1057.57~20.04.1
                                   Available with Ubuntu Pro
   linux-image-nvidia-tegra-rt-5.15  5.15.0.1057.57~20.04.1
                                   Available with Ubuntu Pro

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

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.

References:
   https://ubuntu.com/security/notices/USN-8162-1
   CVE-2023-53421, CVE-2023-53520, CVE-2023-53662, CVE-2023-54207,
   CVE-2025-37849, CVE-2025-38057, CVE-2025-38125, CVE-2025-38232,
   CVE-2025-38408, CVE-2025-38591, CVE-2025-40149, CVE-2025-40164,
   CVE-2025-68211, CVE-2025-68340, CVE-2025-68365, CVE-2025-68725,
   CVE-2025-68817, CVE-2025-71080, CVE-2025-71163, CVE-2025-71185,
   CVE-2025-71186, CVE-2025-71188, CVE-2025-71190, CVE-2025-71191,
   CVE-2025-71194, CVE-2025-71196, CVE-2025-71197, CVE-2025-71199,
   CVE-2026-22997, CVE-2026-22998, CVE-2026-22999, CVE-2026-23001,
   CVE-2026-23003, CVE-2026-23011, CVE-2026-23026, CVE-2026-23033,
   CVE-2026-23037, CVE-2026-23038, CVE-2026-23049, CVE-2026-23056,
   CVE-2026-23058, CVE-2026-23060, CVE-2026-23061, CVE-2026-23063,
   CVE-2026-23064, CVE-2026-23071, CVE-2026-23073, CVE-2026-23074,
   CVE-2026-23075, CVE-2026-23076, CVE-2026-23078, CVE-2026-23080,
   CVE-2026-23083, CVE-2026-23084, CVE-2026-23085, CVE-2026-23087,
   CVE-2026-23089, CVE-2026-23090, CVE-2026-23091, CVE-2026-23093,
   CVE-2026-23095, CVE-2026-23096, CVE-2026-23097, CVE-2026-23098,
   CVE-2026-23099, CVE-2026-23101, CVE-2026-23103, CVE-2026-23105,
   CVE-2026-23108, CVE-2026-23111, CVE-2026-23119, CVE-2026-23120,
   CVE-2026-23121, CVE-2026-23124, CVE-2026-23125, CVE-2026-23128,
   CVE-2026-23133, CVE-2026-23145, CVE-2026-23146, CVE-2026-23150,
   CVE-2026-23164, CVE-2026-23167, CVE-2026-23170, CVE-2026-23209