Ubuntu alert USN-8490-1 (kernel)

From:
             
 
Giampaolo Fresi Roglia via ubuntu-security-announce <ubuntu-security-announce@lists.ubuntu.com>
To:
             
 
ubuntu-security-announce@lists.ubuntu.com
Subject:
             
 
[USN-8490-1] Linux kernel vulnerabilities
Date:
             
 
Wed, 01 Jul 2026 17:25:25 +0200
Message-ID:
             
 
<sa7h5min34q.fsf@canonical.com>
Cc:
             
 
Giampaolo Fresi Roglia <giampaolo.fresi.roglia@canonical.com>
==========================================================================
Ubuntu Security Notice USN-8490-1
July 01, 2026

linux vulnerabilities
==========================================================================

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

- Ubuntu 25.10

Summary:

Several security issues were fixed in the Linux kernel.

Software Description:
- linux: Linux kernel

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;
  - DMA engine subsystem;
  - InfiniBand drivers;
  - STMicroelectronics network drivers;
  - Network drivers;
  - NVME drivers;
  - SCSI subsystem;
  - USB over IP driver;
  - File systems infrastructure;
  - Ext4 file system;
  - Network file system (NFS) server daemon;
  - SMB network file system;
  - Kernel thread helper (kthread);
  - IPv6 networking;
  - Tracing infrastructure;
  - Kernel exit() syscall;
  - Scatterlist API;
  - B.A.T.M.A.N. meshing protocol;
  - Ethernet bridge;
  - Ceph Core library;
  - IPv4 networking;
  - Multipath TCP;
  - Netfilter;
  - RxRPC session sockets;
  - SMC sockets;
  - X.25 network layer;
(CVE-2026-22984, CVE-2026-23272, CVE-2026-23278, CVE-2026-23392,
CVE-2026-23427, CVE-2026-23428, CVE-2026-23450, CVE-2026-23455,
CVE-2026-31402, CVE-2026-31418, CVE-2026-31436, CVE-2026-31448,
CVE-2026-31478, CVE-2026-31607, CVE-2026-31635, CVE-2026-31637,
CVE-2026-31649, CVE-2026-31657, CVE-2026-31659, CVE-2026-31668,
CVE-2026-31669, CVE-2026-31682, CVE-2026-31685, CVE-2026-31718,
CVE-2026-43011, CVE-2026-43037, CVE-2026-43038, CVE-2026-43071,
CVE-2026-43083, CVE-2026-43114, CVE-2026-43117, CVE-2026-43125,
CVE-2026-43186, CVE-2026-43197, CVE-2026-43304, CVE-2026-43341,
CVE-2026-43376, CVE-2026-43378, CVE-2026-43383, CVE-2026-43384,
CVE-2026-43402, CVE-2026-43406, CVE-2026-43407, CVE-2026-43414,
CVE-2026-43493, CVE-2026-43501, CVE-2026-45898, CVE-2026-45988,
CVE-2026-46039, CVE-2026-46043, CVE-2026-46115, CVE-2026-46119,
CVE-2026-46135, CVE-2026-46185, CVE-2026-46195, CVE-2026-46243,
CVE-2026-46244, CVE-2026-46266, CVE-2026-46289, CVE-2026-46316,
CVE-2026-46325)

Update instructions:

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

Ubuntu 25.10
  linux-image-6.17.0-40-generic   6.17.0-40.40
  linux-image-6.17.0-40-generic-64k  6.17.0-40.40
  linux-image-generic             6.17.0-40.40
  linux-image-generic-6.17        6.17.0-40.40
  linux-image-generic-64k         6.17.0-40.40
  linux-image-generic-64k-6.17    6.17.0-40.40
  linux-image-oem-24.04           6.17.0-40.40
  linux-image-oem-24.04c          6.17.0-40.40
  linux-image-virtual             6.17.0-40.40
  linux-image-virtual-6.17        6.17.0-40.40

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-8490-1
  CVE-2026-22984, CVE-2026-23272, CVE-2026-23278, CVE-2026-23392,
  CVE-2026-23427, CVE-2026-23428, CVE-2026-23450, CVE-2026-23455,
  CVE-2026-31402, CVE-2026-31418, CVE-2026-31436, CVE-2026-31448,
  CVE-2026-31478, CVE-2026-31607, CVE-2026-31635, CVE-2026-31637,
  CVE-2026-31649, CVE-2026-31657, CVE-2026-31659, CVE-2026-31668,
  CVE-2026-31669, CVE-2026-31682, CVE-2026-31685, CVE-2026-31718,
  CVE-2026-43011, CVE-2026-43037, CVE-2026-43038, CVE-2026-43071,
  CVE-2026-43083, CVE-2026-43114, CVE-2026-43117, CVE-2026-43125,
  CVE-2026-43186, CVE-2026-43197, CVE-2026-43304, CVE-2026-43341,
  CVE-2026-43376, CVE-2026-43378, CVE-2026-43383, CVE-2026-43384,
  CVE-2026-43402, CVE-2026-43406, CVE-2026-43407, CVE-2026-43414,
  CVE-2026-43493, CVE-2026-43501, CVE-2026-45898, CVE-2026-45988,
  CVE-2026-46039, CVE-2026-46043, CVE-2026-46115, CVE-2026-46119,
  CVE-2026-46135, CVE-2026-46185, CVE-2026-46195, CVE-2026-46243,
  CVE-2026-46244, CVE-2026-46266, CVE-2026-46289, CVE-2026-46316,
  CVE-2026-46325

Package Information:
  https://launchpad.net/ubuntu/+source/linux/6.17.0-40.40



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