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==========================================================================
Ubuntu Security Notice USN-7510-4
May 20, 2025

linux-intel-iot-realtime, linux-realtime vulnerabilities
==========================================================================

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

- Ubuntu 22.04 LTS

Summary:

Several security issues were fixed in the Linux kernel.

Software Description:
- linux-intel-iot-realtime: Linux kernel for Intel IoT Real-time platforms
- linux-realtime: Linux kernel for Real-time 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;
  - PowerPC architecture;
  - x86 architecture;
  - Block layer subsystem;
  - Network block device driver;
  - Bus devices;
  - Character device driver;
  - TPM device driver;
  - Clock framework and drivers;
  - GPIO subsystem;
  - GPU drivers;
  - HID subsystem;
  - I2C subsystem;
  - InfiniBand drivers;
  - Media drivers;
  - NVIDIA Tegra memory controller driver;
  - Network drivers;
  - PCI subsystem;
  - PPS (Pulse Per Second) driver;
  - PTP clock framework;
  - RapidIO drivers;
  - Real Time Clock drivers;
  - SLIMbus drivers;
  - QCOM SoC drivers;
  - Trusted Execution Environment drivers;
  - TTY drivers;
  - USB DSL drivers;
  - USB Device Class drivers;
  - USB core drivers;
  - USB Gadget drivers;
  - USB Host Controller drivers;
  - Renesas USBHS Controller drivers;
  - ACRN Hypervisor Service Module driver;
  - File systems infrastructure;
  - BTRFS file system;
  - F2FS file system;
  - Network file system (NFS) server daemon;
  - NILFS2 file system;
  - Overlay file system;
  - SMB network file system;
  - UBI file system;
  - KVM subsystem;
  - L3 Master device support module;
  - Process Accounting mechanism;
  - Padata parallel execution mechanism;
  - printk logging mechanism;
  - Scheduler infrastructure;
  - Timer subsystem;
  - Tracing infrastructure;
  - Memory management;
  - 802.1Q VLAN protocol;
  - B.A.T.M.A.N. meshing protocol;
  - Networking core;
  - IPv4 networking;
  - IPv6 networking;
  - Logical Link layer;
  - Multipath TCP;
  - Netfilter;
  - NFC subsystem;
  - Open vSwitch;
  - Rose network layer;
  - Network traffic control;
  - Wireless networking;
  - Landlock security;
  - Linux Security Modules (LSM) Framework;
  - Tomoyo security module;
(CVE-2025-21761, CVE-2025-21715, CVE-2025-21802, CVE-2024-57980,
CVE-2025-21708, CVE-2025-21722, CVE-2025-21948, CVE-2024-58063,
CVE-2025-21765, CVE-2024-58086, CVE-2025-21753, CVE-2025-21943,
CVE-2025-21924, CVE-2024-57978, CVE-2025-21760, CVE-2025-21726,
CVE-2025-21647, CVE-2025-21866, CVE-2025-21763, CVE-2025-21950,
CVE-2024-57977, CVE-2025-21799, CVE-2024-57981, CVE-2025-21871,
CVE-2025-21887, CVE-2025-21772, CVE-2025-21878, CVE-2024-58090,
CVE-2025-21859, CVE-2024-57986, CVE-2024-57973, CVE-2024-58007,
CVE-2025-21898, CVE-2025-21787, CVE-2025-21865, CVE-2025-21848,
CVE-2025-21806, CVE-2024-58005, CVE-2024-58058, CVE-2024-56599,
CVE-2024-58034, CVE-2025-21846, CVE-2025-21719, CVE-2025-21749,
CVE-2025-21766, CVE-2025-21744, CVE-2024-58010, CVE-2025-21704,
CVE-2024-26982, CVE-2024-58020, CVE-2025-21916, CVE-2024-58055,
CVE-2024-58014, CVE-2024-58051, CVE-2025-21767, CVE-2025-21707,
CVE-2025-21795, CVE-2024-58002, CVE-2025-21928, CVE-2025-21925,
CVE-2024-58085, CVE-2025-21877, CVE-2025-21684, CVE-2024-58083,
CVE-2025-21904, CVE-2024-58016, CVE-2025-21934, CVE-2025-21951,
CVE-2025-21782, CVE-2025-21758, CVE-2025-21728, CVE-2025-21858,
CVE-2025-21823, CVE-2025-21910, CVE-2025-21736, CVE-2025-21796,
CVE-2025-21779, CVE-2025-21718, CVE-2024-56721, CVE-2024-58069,
CVE-2024-58079, CVE-2025-21721, CVE-2025-21711, CVE-2025-21791,
CVE-2025-21971, CVE-2025-21811, CVE-2025-21785, CVE-2025-21814,
CVE-2025-21764, CVE-2024-58052, CVE-2025-21776, CVE-2024-58076,
CVE-2024-47726, CVE-2025-21762, CVE-2025-21804, CVE-2025-21926,
CVE-2025-21826, CVE-2025-21731, CVE-2024-57979, CVE-2025-21909,
CVE-2025-21835, CVE-2025-21905, CVE-2025-21748, CVE-2024-58071,
CVE-2025-21830, CVE-2025-21922, CVE-2024-57834, CVE-2025-21745,
CVE-2025-21727, CVE-2025-21781, CVE-2025-21862, CVE-2024-58072,
CVE-2025-21844, CVE-2025-21912, CVE-2025-21875, CVE-2025-21919,
CVE-2025-21820, CVE-2024-58017, CVE-2025-21914, CVE-2025-21917,
CVE-2025-21920, CVE-2025-21735, CVE-2025-21935, CVE-2024-58001)

Update instructions:

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

Ubuntu 22.04 LTS
  linux-image-5.15.0-1077-intel-iot-realtime  5.15.0-1077.79
                                  Available with Ubuntu Pro
  linux-image-5.15.0-1084-realtime  5.15.0-1084.93
                                  Available with Ubuntu Pro
  linux-image-intel-iot-realtime  5.15.0.1077.81
                                  Available with Ubuntu Pro
  linux-image-realtime            5.15.0.1084.88
                                  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-7510-4
  https://ubuntu.com/security/notices/USN-7510-3
  https://ubuntu.com/security/notices/USN-7510-2
  https://ubuntu.com/security/notices/USN-7510-1
  CVE-2024-26982, CVE-2024-47726, CVE-2024-56599, CVE-2024-56721,
  CVE-2024-57834, CVE-2024-57973, CVE-2024-57977, CVE-2024-57978,
  CVE-2024-57979, CVE-2024-57980, CVE-2024-57981, CVE-2024-57986,
  CVE-2024-58001, CVE-2024-58002, CVE-2024-58005, CVE-2024-58007,
  CVE-2024-58010, CVE-2024-58014, CVE-2024-58016, CVE-2024-58017,
  CVE-2024-58020, CVE-2024-58034, CVE-2024-58051, CVE-2024-58052,
  CVE-2024-58055, CVE-2024-58058, CVE-2024-58063, CVE-2024-58069,
  CVE-2024-58071, CVE-2024-58072, CVE-2024-58076, CVE-2024-58079,
  CVE-2024-58083, CVE-2024-58085, CVE-2024-58086, CVE-2024-58090,
  CVE-2025-21647, CVE-2025-21684, CVE-2025-21704, CVE-2025-21707,
  CVE-2025-21708, CVE-2025-21711, CVE-2025-21715, CVE-2025-21718,
  CVE-2025-21719, CVE-2025-21721, CVE-2025-21722, CVE-2025-21726,
  CVE-2025-21727, CVE-2025-21728, CVE-2025-21731, CVE-2025-21735,
  CVE-2025-21736, CVE-2025-21744, CVE-2025-21745, CVE-2025-21748,
  CVE-2025-21749, CVE-2025-21753, CVE-2025-21758, CVE-2025-21760,
  CVE-2025-21761, CVE-2025-21762, CVE-2025-21763, CVE-2025-21764,
  CVE-2025-21765, CVE-2025-21766, CVE-2025-21767, CVE-2025-21772,
  CVE-2025-21776, CVE-2025-21779, CVE-2025-21781, CVE-2025-21782,
  CVE-2025-21785, CVE-2025-21787, CVE-2025-21791, CVE-2025-21795,
  CVE-2025-21796, CVE-2025-21799, CVE-2025-21802, CVE-2025-21804,
  CVE-2025-21806, CVE-2025-21811, CVE-2025-21814, CVE-2025-21820,
  CVE-2025-21823, CVE-2025-21826, CVE-2025-21830, CVE-2025-21835,
  CVE-2025-21844, CVE-2025-21846, CVE-2025-21848, CVE-2025-21858,
  CVE-2025-21859, CVE-2025-21862, CVE-2025-21865, CVE-2025-21866,
  CVE-2025-21871, CVE-2025-21875, CVE-2025-21877, CVE-2025-21878,
  CVE-2025-21887, CVE-2025-21898, CVE-2025-21904, CVE-2025-21905,
  CVE-2025-21909, CVE-2025-21910, CVE-2025-21912, CVE-2025-21914,
  CVE-2025-21916, CVE-2025-21917, CVE-2025-21919, CVE-2025-21920,
  CVE-2025-21922, CVE-2025-21924, CVE-2025-21925, CVE-2025-21926,
  CVE-2025-21928, CVE-2025-21934, CVE-2025-21935, CVE-2025-21943,
  CVE-2025-21948, CVE-2025-21950, CVE-2025-21951, CVE-2025-21971

Package Information:
  https://launchpad.net/ubuntu/+source/linux-intel-iot-realtime/5.15.0-1077.79
  https://launchpad.net/ubuntu/+source/linux-realtime/5.15.0-1084.93


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