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From: Rodrigo Figueiredo Zaiden <rodrigo.zaiden@canonical.com>
Reply-To: "Security@Ubuntu.com" <Security@ubuntu.com>
To: ubuntu-security-announce@lists.ubuntu.com
Message-ID: <3e7c290a-c55b-4aa6-aba5-5bc4c9836adb@canonical.com>
Subject: [USN-7383-2] Linux kernel (Real-time) vulnerabilities

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==========================================================================
Ubuntu Security Notice USN-7383-2
March 27, 2025

linux-realtime vulnerabilities
==========================================================================

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

- Ubuntu 24.04 LTS

Summary:

Several security issues were fixed in the Linux kernel.

Software Description:
- 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;
   - x86 architecture;
   - Block layer subsystem;
   - Drivers core;
   - Ublk userspace block driver;
   - Compressed RAM block device driver;
   - CPU frequency scaling framework;
   - DAX dirext access to differentiated memory framework;
   - GPU drivers;
   - HID subsystem;
   - I3C subsystem;
   - IIO subsystem;
   - InfiniBand drivers;
   - IOMMU subsystem;
   - IRQ chip drivers;
   - Network drivers;
   - NTB driver;
   - Virtio pmem driver;
   - Parport drivers;
   - Pin controllers subsystem;
   - SCSI subsystem;
   - SuperH / SH-Mobile drivers;
   - Direct Digital Synthesis drivers;
   - Thermal drivers;
   - TTY drivers;
   - UFS subsystem;
   - USB Gadget drivers;
   - USB Host Controller drivers;
   - TI TPS6598x USB Power Delivery controller driver;
   - Framebuffer layer;
   - BTRFS file system;
   - Ext4 file system;
   - F2FS file system;
   - Network file system (NFS) client;
   - NILFS2 file system;
   - NTFS3 file system;
   - SMB network file system;
   - BPF subsystem;
   - Network file system (NFS) superblock;
   - Network traffic control;
   - Network sockets;
   - User-space API (UAPI);
   - io_uring subsystem;
   - Kernel thread helper (kthread);
   - RCU subsystem;
   - Timer subsystem;
   - Maple Tree data structure library;
   - Memory management;
   - Bluetooth subsystem;
   - Ethernet bridge;
   - Networking core;
   - IPv4 networking;
   - Multipath TCP;
   - Netfilter;
   - Netlink;
   - Unix domain sockets;
   - Wireless networking;
   - eXpress Data Path;
(CVE-2024-50182, CVE-2024-50020, CVE-2024-50060, CVE-2024-50074,
CVE-2024-50193, CVE-2024-50117, CVE-2024-50201, CVE-2024-50033,
CVE-2024-50056, CVE-2024-50026, CVE-2024-50059, CVE-2024-50041,
CVE-2024-50083, CVE-2024-50038, CVE-2024-50229, CVE-2024-50028,
CVE-2024-50183, CVE-2024-50196, CVE-2024-50029, CVE-2024-50093,
CVE-2024-50188, CVE-2024-50025, CVE-2024-50200, CVE-2024-50068,
CVE-2024-49920, CVE-2024-50198, CVE-2024-50035, CVE-2024-50042,
CVE-2024-50023, CVE-2024-50047, CVE-2024-56582, CVE-2024-50090,
CVE-2024-50062, CVE-2024-50073, CVE-2024-50063, CVE-2024-50098,
CVE-2024-50197, CVE-2024-50040, CVE-2024-50180, CVE-2024-53170,
CVE-2024-50087, CVE-2024-50031, CVE-2024-50202, CVE-2024-50058,
CVE-2024-50186, CVE-2024-50134, CVE-2024-50194, CVE-2024-50075,
CVE-2024-50046, CVE-2024-50078, CVE-2024-50066, CVE-2024-53156,
CVE-2024-49893, CVE-2024-50021, CVE-2024-47711, CVE-2024-47726,
CVE-2024-50024, CVE-2024-49865, CVE-2024-50064, CVE-2024-50049,
CVE-2024-50171, CVE-2024-50019, CVE-2024-50077, CVE-2024-50199,
CVE-2024-50072, CVE-2024-50069, CVE-2024-50048, CVE-2024-49972,
CVE-2024-53165, CVE-2024-50022, CVE-2024-50084, CVE-2024-50185,
CVE-2024-50055, CVE-2024-50187, CVE-2024-50009, CVE-2024-50082,
CVE-2024-50085, CVE-2024-50095, CVE-2024-50195, CVE-2024-50080,
CVE-2024-50076, CVE-2024-50088, CVE-2024-50039, CVE-2024-50044,
CVE-2024-50030, CVE-2024-49968, CVE-2024-50148, CVE-2024-50192,
CVE-2024-50032, CVE-2024-50061, CVE-2024-50233, CVE-2024-50099,
CVE-2024-49921, CVE-2024-50184, CVE-2024-50065, CVE-2024-49914,
CVE-2024-50027, CVE-2024-50070, CVE-2024-50086, CVE-2024-50189,
CVE-2024-56614, CVE-2024-50057, CVE-2024-50096, CVE-2024-50045,
CVE-2024-50036, CVE-2024-56663, CVE-2024-50191, CVE-2024-50101)

Update instructions:

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

Ubuntu 24.04 LTS
   linux-image-6.8.1-1018-realtime  6.8.1-1018.19
   linux-image-realtime            6.8.1-1018.19
   linux-image-realtime-hwe-24.04  6.8.1-1018.19

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-7383-2
   https://ubuntu.com/security/notices/USN-7383-1
   CVE-2024-47711, CVE-2024-47726, CVE-2024-49865, CVE-2024-49893,
   CVE-2024-49914, CVE-2024-49920, CVE-2024-49921, CVE-2024-49968,
   CVE-2024-49972, CVE-2024-50009, CVE-2024-50019, CVE-2024-50020,
   CVE-2024-50021, CVE-2024-50022, CVE-2024-50023, CVE-2024-50024,
   CVE-2024-50025, CVE-2024-50026, CVE-2024-50027, CVE-2024-50028,
   CVE-2024-50029, CVE-2024-50030, CVE-2024-50031, CVE-2024-50032,
   CVE-2024-50033, CVE-2024-50035, CVE-2024-50036, CVE-2024-50038,
   CVE-2024-50039, CVE-2024-50040, CVE-2024-50041, CVE-2024-50042,
   CVE-2024-50044, CVE-2024-50045, CVE-2024-50046, CVE-2024-50047,
   CVE-2024-50048, CVE-2024-50049, CVE-2024-50055, CVE-2024-50056,
   CVE-2024-50057, CVE-2024-50058, CVE-2024-50059, CVE-2024-50060,
   CVE-2024-50061, CVE-2024-50062, CVE-2024-50063, CVE-2024-50064,
   CVE-2024-50065, CVE-2024-50066, CVE-2024-50068, CVE-2024-50069,
   CVE-2024-50070, CVE-2024-50072, CVE-2024-50073, CVE-2024-50074,
   CVE-2024-50075, CVE-2024-50076, CVE-2024-50077, CVE-2024-50078,
   CVE-2024-50080, CVE-2024-50082, CVE-2024-50083, CVE-2024-50084,
   CVE-2024-50085, CVE-2024-50086, CVE-2024-50087, CVE-2024-50088,
   CVE-2024-50090, CVE-2024-50093, CVE-2024-50095, CVE-2024-50096,
   CVE-2024-50098, CVE-2024-50099, CVE-2024-50101, CVE-2024-50117,
   CVE-2024-50134, CVE-2024-50148, CVE-2024-50171, CVE-2024-50180,
   CVE-2024-50182, CVE-2024-50183, CVE-2024-50184, CVE-2024-50185,
   CVE-2024-50186, CVE-2024-50187, CVE-2024-50188, CVE-2024-50189,
   CVE-2024-50191, CVE-2024-50192, CVE-2024-50193, CVE-2024-50194,
   CVE-2024-50195, CVE-2024-50196, CVE-2024-50197, CVE-2024-50198,
   CVE-2024-50199, CVE-2024-50200, CVE-2024-50201, CVE-2024-50202,
   CVE-2024-50229, CVE-2024-50233, CVE-2024-53156, CVE-2024-53165,
   CVE-2024-53170, CVE-2024-56582, CVE-2024-56614, CVE-2024-56663

Package Information:
   https://launchpad.net/ubuntu/+source/linux-realtime/6.8.1-1018.19

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