==========================================================================
Ubuntu Security Notice USN-7909-2
December 04, 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:
  - ARM32 architecture;
  - ARM64 architecture;
  - MIPS architecture;
  - PowerPC architecture;
  - RISC-V architecture;
  - S390 architecture;
  - x86 architecture;
  - Block layer subsystem;
  - ACPI drivers;
  - ATM drivers;
  - DRBD Distributed Replicated Block Device drivers;
  - Bus devices;
  - Clock framework and drivers;
  - Data acquisition framework and drivers;
  - Hardware crypto device drivers;
  - Device frequency scaling framework;
  - Buffer Sharing and Synchronization framework;
  - DMA engine subsystem;
  - ARM SCMI message protocol;
  - GPU drivers;
  - HID subsystem;
  - Hardware monitoring drivers;
  - I2C subsystem;
  - I3C subsystem;
  - IIO subsystem;
  - InfiniBand drivers;
  - Input Device core drivers;
  - IOMMU subsystem;
  - Media drivers;
  - Network drivers;
  - Mellanox network drivers;
  - PCI subsystem;
  - PCCARD (PCMCIA/CardBus) bus subsystem;
  - PHY drivers;
  - Power supply drivers;
  - Voltage and Current Regulator drivers;
  - SCSI subsystem;
  - ASPEED SoC drivers;
  - QCOM SoC drivers;
  - small TFT LCD display modules;
  - Trusted Execution Environment drivers;
  - TTY drivers;
  - UFS subsystem;
  - USB core drivers;
  - DesignWare USB3 driver;
  - USB Gadget drivers;
  - Framebuffer layer;
  - BTRFS file system;
  - File systems infrastructure;
  - EFI Variable file system;
  - Ext4 file system;
  - F2FS file system;
  - JFS file system;
  - Network file system (NFS) client;
  - Network file system (NFS) server daemon;
  - NILFS2 file system;
  - NTFS3 file system;
  - SMB network file system;
  - Asynchronous Transfer Mode (ATM) subsystem;
  - BPF subsystem;
  - NFS page cache wrapper;
  - Memory management;
  - Networking subsytem;
  - UDP network protocol;
  - Perf events;
  - RCU subsystem;
  - Tracing infrastructure;
  - 802.1Q VLAN protocol;
  - Appletalk network protocol;
  - Amateur Radio drivers;
  - B.A.T.M.A.N. meshing protocol;
  - Bluetooth subsystem;
  - Ethernet bridge;
  - Networking core;
  - HSR network protocol;
  - IPv4 networking;
  - IPv6 networking;
  - Multipath TCP;
  - Netfilter;
  - Network traffic control;
  - SCTP protocol;
  - TLS protocol;
  - Wireless networking;
  - SoC audio core drivers;
  - USB sound devices;
(CVE-2022-50070, CVE-2022-50327, CVE-2023-52935, CVE-2023-53074,
CVE-2024-50061, CVE-2024-53068, CVE-2025-37925, CVE-2025-37968,
CVE-2025-38095, CVE-2025-38148, CVE-2025-38165, CVE-2025-38335,
CVE-2025-38347, CVE-2025-38468, CVE-2025-38470, CVE-2025-38473,
CVE-2025-38474, CVE-2025-38476, CVE-2025-38478, CVE-2025-38480,
CVE-2025-38481, CVE-2025-38482, CVE-2025-38483, CVE-2025-38487,
CVE-2025-38488, CVE-2025-38494, CVE-2025-38495, CVE-2025-38497,
CVE-2025-38499, CVE-2025-38502, CVE-2025-38527, CVE-2025-38528,
CVE-2025-38529, CVE-2025-38530, CVE-2025-38535, CVE-2025-38538,
CVE-2025-38539, CVE-2025-38548, CVE-2025-38550, CVE-2025-38553,
CVE-2025-38555, CVE-2025-38563, CVE-2025-38565, CVE-2025-38569,
CVE-2025-38572, CVE-2025-38574, CVE-2025-38576, CVE-2025-38577,
CVE-2025-38578, CVE-2025-38579, CVE-2025-38581, CVE-2025-38583,
CVE-2025-38601, CVE-2025-38602, CVE-2025-38604, CVE-2025-38608,
CVE-2025-38609, CVE-2025-38612, CVE-2025-38614, CVE-2025-38622,
CVE-2025-38623, CVE-2025-38624, CVE-2025-38630, CVE-2025-38634,
CVE-2025-38635, CVE-2025-38639, CVE-2025-38645, CVE-2025-38650,
CVE-2025-38652, CVE-2025-38663, CVE-2025-38664, CVE-2025-38666,
CVE-2025-38668, CVE-2025-38670, CVE-2025-38671, CVE-2025-38676,
CVE-2025-38677, CVE-2025-38678, CVE-2025-38680, CVE-2025-38681,
CVE-2025-38683, CVE-2025-38684, CVE-2025-38685, CVE-2025-38687,
CVE-2025-38691, CVE-2025-38693, CVE-2025-38694, CVE-2025-38695,
CVE-2025-38696, CVE-2025-38697, CVE-2025-38698, CVE-2025-38699,
CVE-2025-38700, CVE-2025-38701, CVE-2025-38706, CVE-2025-38707,
CVE-2025-38708, CVE-2025-38711, CVE-2025-38712, CVE-2025-38713,
CVE-2025-38714, CVE-2025-38715, CVE-2025-38718, CVE-2025-38721,
CVE-2025-38724, CVE-2025-38725, CVE-2025-38729, CVE-2025-38732,
CVE-2025-39673, CVE-2025-39675, CVE-2025-39676, CVE-2025-39681,
CVE-2025-39683, CVE-2025-39684, CVE-2025-39685, CVE-2025-39686,
CVE-2025-39687, CVE-2025-39689, CVE-2025-39691, CVE-2025-39693,
CVE-2025-39697, CVE-2025-39702, CVE-2025-39703, CVE-2025-39709,
CVE-2025-39710, CVE-2025-39713, CVE-2025-39714, CVE-2025-39724,
CVE-2025-39730, CVE-2025-39734, CVE-2025-39736, CVE-2025-39737,
CVE-2025-39738, CVE-2025-39742, CVE-2025-39743, CVE-2025-39749,
CVE-2025-39752, CVE-2025-39756, CVE-2025-39757, CVE-2025-39760,
CVE-2025-39766, CVE-2025-39772, CVE-2025-39773, CVE-2025-39776,
CVE-2025-39782, CVE-2025-39783, CVE-2025-39787, CVE-2025-39788,
CVE-2025-39790, CVE-2025-39794, CVE-2025-39795, CVE-2025-39798,
CVE-2025-39801, CVE-2025-39806, CVE-2025-39808, CVE-2025-39812,
CVE-2025-39813, CVE-2025-39817, CVE-2025-39823, CVE-2025-39824,
CVE-2025-39828, CVE-2025-39835, CVE-2025-39839, CVE-2025-39841,
CVE-2025-39844, CVE-2025-39845, CVE-2025-39846, CVE-2025-39847,
CVE-2025-39848, CVE-2025-39853, CVE-2025-39860, CVE-2025-39864,
CVE-2025-39865, CVE-2025-39866, CVE-2025-39891, CVE-2025-39894,
CVE-2025-39902, CVE-2025-39920)

Update instructions:

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

Ubuntu 22.04 LTS
  linux-image-5.15.0-1089-intel-iot-realtime  5.15.0-1089.91
                                  Available with Ubuntu Pro
  linux-image-5.15.0-1096-realtime  5.15.0-1096.105
                                  Available with Ubuntu Pro
  linux-image-intel-iot-realtime  5.15.0.1089.93
                                  Available with Ubuntu Pro
  linux-image-intel-iot-realtime-5.15  5.15.0.1089.93
                                  Available with Ubuntu Pro
  linux-image-realtime            5.15.0.1096.100
                                  Available with Ubuntu Pro
  linux-image-realtime-5.15       5.15.0.1096.100
                                  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-7909-2
  https://ubuntu.com/security/notices/USN-7909-1
  CVE-2022-50070, CVE-2022-50327, CVE-2023-52935, CVE-2023-53074,
  CVE-2024-50061, CVE-2024-53068, CVE-2025-37925, CVE-2025-37968,
  CVE-2025-38095, CVE-2025-38148, CVE-2025-38165, CVE-2025-38335,
  CVE-2025-38347, CVE-2025-38468, CVE-2025-38470, CVE-2025-38473,
  CVE-2025-38474, CVE-2025-38476, CVE-2025-38478, CVE-2025-38480,
  CVE-2025-38481, CVE-2025-38482, CVE-2025-38483, CVE-2025-38487,
  CVE-2025-38488, CVE-2025-38494, CVE-2025-38495, CVE-2025-38497,
  CVE-2025-38499, CVE-2025-38502, CVE-2025-38527, CVE-2025-38528,
  CVE-2025-38529, CVE-2025-38530, CVE-2025-38535, CVE-2025-38538,
  CVE-2025-38539, CVE-2025-38548, CVE-2025-38550, CVE-2025-38553,
  CVE-2025-38555, CVE-2025-38563, CVE-2025-38565, CVE-2025-38569,
  CVE-2025-38572, CVE-2025-38574, CVE-2025-38576, CVE-2025-38577,
  CVE-2025-38578, CVE-2025-38579, CVE-2025-38581, CVE-2025-38583,
  CVE-2025-38601, CVE-2025-38602, CVE-2025-38604, CVE-2025-38608,
  CVE-2025-38609, CVE-2025-38612, CVE-2025-38614, CVE-2025-38622,
  CVE-2025-38623, CVE-2025-38624, CVE-2025-38630, CVE-2025-38634,
  CVE-2025-38635, CVE-2025-38639, CVE-2025-38645, CVE-2025-38650,
  CVE-2025-38652, CVE-2025-38663, CVE-2025-38664, CVE-2025-38666,
  CVE-2025-38668, CVE-2025-38670, CVE-2025-38671, CVE-2025-38676,
  CVE-2025-38677, CVE-2025-38678, CVE-2025-38680, CVE-2025-38681,
  CVE-2025-38683, CVE-2025-38684, CVE-2025-38685, CVE-2025-38687,
  CVE-2025-38691, CVE-2025-38693, CVE-2025-38694, CVE-2025-38695,
  CVE-2025-38696, CVE-2025-38697, CVE-2025-38698, CVE-2025-38699,
  CVE-2025-38700, CVE-2025-38701, CVE-2025-38706, CVE-2025-38707,
  CVE-2025-38708, CVE-2025-38711, CVE-2025-38712, CVE-2025-38713,
  CVE-2025-38714, CVE-2025-38715, CVE-2025-38718, CVE-2025-38721,
  CVE-2025-38724, CVE-2025-38725, CVE-2025-38729, CVE-2025-38732,
  CVE-2025-39673, CVE-2025-39675, CVE-2025-39676, CVE-2025-39681,
  CVE-2025-39683, CVE-2025-39684, CVE-2025-39685, CVE-2025-39686,
  CVE-2025-39687, CVE-2025-39689, CVE-2025-39691, CVE-2025-39693,
  CVE-2025-39697, CVE-2025-39702, CVE-2025-39703, CVE-2025-39709,
  CVE-2025-39710, CVE-2025-39713, CVE-2025-39714, CVE-2025-39724,
  CVE-2025-39730, CVE-2025-39734, CVE-2025-39736, CVE-2025-39737,
  CVE-2025-39738, CVE-2025-39742, CVE-2025-39743, CVE-2025-39749,
  CVE-2025-39752, CVE-2025-39756, CVE-2025-39757, CVE-2025-39760,
  CVE-2025-39766, CVE-2025-39772, CVE-2025-39773, CVE-2025-39776,
  CVE-2025-39782, CVE-2025-39783, CVE-2025-39787, CVE-2025-39788,
  CVE-2025-39790, CVE-2025-39794, CVE-2025-39795, CVE-2025-39798,
  CVE-2025-39801, CVE-2025-39806, CVE-2025-39808, CVE-2025-39812,
  CVE-2025-39813, CVE-2025-39817, CVE-2025-39823, CVE-2025-39824,
  CVE-2025-39828, CVE-2025-39835, CVE-2025-39839, CVE-2025-39841,
  CVE-2025-39844, CVE-2025-39845, CVE-2025-39846, CVE-2025-39847,
  CVE-2025-39848, CVE-2025-39853, CVE-2025-39860, CVE-2025-39864,
  CVE-2025-39865, CVE-2025-39866, CVE-2025-39891, CVE-2025-39894,
  CVE-2025-39902, CVE-2025-39920

Package Information: