Ubuntu alert USN-7795-4 (linux-oracle-5.4)

From:
             
 
Giampaolo Fresi Roglia <giampaolo.fresi.roglia@canonical.com>
To:
             
 
ubuntu-security-announce@lists.ubuntu.com
Subject:
             
 
[USN-7795-4] Linux kernel (Oracle) vulnerabilities
Date:
             
 
Fri, 24 Oct 2025 10:10:44 +0200
Message-ID:
             
 
<87ldl0pvnf.fsf@canonical.com>
==========================================================================
Ubuntu Security Notice USN-7795-4
October 24, 2025

linux-oracle-5.4 vulnerabilities
==========================================================================

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

- Ubuntu 18.04 LTS

Summary:

Several security issues were fixed in the Linux kernel.

Software Description:
- linux-oracle-5.4: Linux kernel for Oracle Cloud 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:
  - Ext4 file system;
  - Network file system (NFS) server daemon;
  - Packet sockets;
  - Network traffic control;
  - VMware vSockets driver;
(CVE-2025-38617, CVE-2025-21796, CVE-2025-38618, CVE-2025-37785,
CVE-2025-38477)

Update instructions:

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

Ubuntu 18.04 LTS
  linux-image-5.4.0-1149-oracle   5.4.0-1149.159~18.04.1
                                  Available with Ubuntu Pro
  linux-image-oracle              5.4.0.1149.159~18.04.1
                                  Available with Ubuntu Pro
  linux-image-oracle-5.4          5.4.0.1149.159~18.04.1
                                  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-7795-4
  https://ubuntu.com/security/notices/USN-7795-3
  https://ubuntu.com/security/notices/USN-7795-2
  https://ubuntu.com/security/notices/USN-7795-1
  CVE-2025-21796, CVE-2025-37785, CVE-2025-38477, CVE-2025-38617,
  CVE-2025-38618



Attachment: signature.asc (type=application/pgp-signature)
-----BEGIN PGP SIGNATURE-----

iQHZBAEBCgBDFiEEBcMY+nwS2CY71sUWc4vdAqvdlsYFAmj7NIQlHGdpYW1wYW9s
by5mcmVzaS5yb2dsaWFAY2Fub25pY2FsLmNvbQAKCRBzi90Cq92WxsC6DAC8o0Ye
sG7oxQ8Kdl27xDAuFwv/0v/yd7ej6difSBRiTuAWFPn62pr3rkRH3pSZZSXwh0Xo
f0VPQ1Jww51XEnpBuolb01nTr5mMVXegs1VI/rkaZbJkxjDxX/mqoUtrQXvLQqPg
Rd3gjYkp9dpqUKCfof82aUxYJZXgxG8tR0tiOoxi2QWNMy798GRMteJjZobtD479
eXXORzZY/E4QGOqC1Xbw31gx+jzx9t9YY3B0eVjYfmJVhINWmgrmlGFI2OA9d0am
Kl3fFSfskoF9f/3qIE9ve+4MY/FJXUJ0IwsMP5qvzOoq1pmGCdX3bDqV2l5Dhf75
is+3xvBaYlOuE7+Kcga7p/y9hv3fjFFIKVCiT4kToOzekEkkAq8Ou83am4kmiSot
9HguBpCXpe14/NGXk13tZoEtDHh43ULxBLjLKU8ch34xrKTxaEMy4j6dCMiUBgEP
FckA2qrfKmK88rYUWA2O4WHJaOuoMJul3F7SD2gvamva/Y85MFGS3DZw07k=
=WWiQ
-----END PGP SIGNATURE-----