[USN-7990-6] Linux kernel (Raspberry Pi) vulnerabilities
[USN-8062-2] curl vulnerabilities
[USN-8068-1] Intel Microcode vulnerability
[USN-7990-6] Linux kernel (Raspberry Pi) vulnerabilities
==========================================================================
Ubuntu Security Notice USN-7990-6
March 03, 2026
linux-raspi, linux-raspi-5.4 vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS
Summary:
Several security issues were fixed in the Linux kernel.
Software Description:
- linux-raspi: Linux kernel for Raspberry Pi systems
- linux-raspi-5.4: Linux kernel for Raspberry Pi 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:
- Cryptographic API;
- Padata parallel execution mechanism;
- Netfilter;
(CVE-2022-49698, CVE-2025-21726, CVE-2025-40019)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 20.04 LTS
linux-image-5.4.0-1137-raspi 5.4.0-1137.150
Available with Ubuntu Pro
linux-image-raspi 5.4.0.1137.168
Available with Ubuntu Pro
linux-image-raspi-5.4 5.4.0.1137.168
Available with Ubuntu Pro
linux-image-raspi2 5.4.0.1137.168
Available with Ubuntu Pro
Ubuntu 18.04 LTS
linux-image-5.4.0-1137-raspi 5.4.0-1137.150~18.04.1
Available with Ubuntu Pro
linux-image-raspi-5.4 5.4.0.1137.150~18.04.1
Available with Ubuntu Pro
linux-image-raspi-hwe-18.04 5.4.0.1137.150~18.04.1
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-7990-6
https://ubuntu.com/security/notices/USN-7990-5
https://ubuntu.com/security/notices/USN-7990-4
https://ubuntu.com/security/notices/USN-7990-3
https://ubuntu.com/security/notices/USN-7990-2
https://ubuntu.com/security/notices/USN-7990-1
CVE-2022-49698, CVE-2025-21726, CVE-2025-40019
[USN-8062-2] curl vulnerabilities
==========================================================================
Ubuntu Security Notice USN-8062-2
March 03, 2026
curl vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS
- Ubuntu 14.04 LTS
Summary:
Several security issues were fixed in curl.
Software Description:
- curl: HTTP, HTTPS, and FTP client and client libraries
Details:
USN-8062-1 fixed vulnerabilities in curl. This update provides the
corresponding update for CVE-2025-14017, CVE-2025-15079, and CVE-2025-15224
for Ubuntu 14.04 LTS, Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, and Ubuntu 20.04
LTS.
Original advisory details:
It was discovered that curl incorrectly handled cookies when redirected
from secure to insecure connections. An attacker could possibly use this
issue to cause a denial of service, or obtain sensitive information.
This issue only affected Ubuntu 25.10. (CVE-2025-9086)
Calvin Ruocco discovered that curl did not properly handle WebSocket
communications under certain circumstances. A malicious server could
possibly use this issue to poison proxy caches with malicious content.
This issue only affected Ubuntu 24.04 LTS and Ubuntu 25.10.
(CVE-2025-10148)
Stanislav Fort discovered that wcurl did not properly handle URLs with
certain encoded characters. If a user were tricked into processing
a specially crafted URL, an attacker could possibly use this issue to
write files outside the intended directory. This issue only affected
Ubuntu 25.10. (CVE-2025-11563)
Stanislav Fort discovered that curl did not properly validate pinned
public keys under certain circumstances. A remote attacker could
possibly use this issue to perform a machine-in-the-middle attack. This
issue only affected Ubuntu 25.10.(CVE-2025-13034)
Stanislav Fort discovered that curl did not properly manage TLS options
when performing LDAP over TLS transfers in multi-threaded environments.
Under certain circumstances, certificate verification could be
unintentionally and unknowingly disabled. (CVE-2025-14017)
It was discovered that curl incorrectly handled Oauth2 bearer tokens
when following redirects. A remote attacker could possibly use this
issue to obtain authentication credentials. (CVE-2025-14524)
Stanislav Fort discovered that curl did not properly validate TLS
certificates when reusing connections. A remote attacker could possibly
use this issue to bypass expected certificate verification. This issue
only affected Ubuntu 24.04 LTS and Ubuntu 25.10. (CVE-2025-14819)
Harry Sintonen discovered that curl did not properly validate SSH host
keys when performing SSH-based file transfers. This issue could lead to
unintended bypass of custom known_hosts file. This issue only
affected Ubuntu 22.04 LTS and Ubuntu 24.04 LTS. (CVE-2025-15079)
Harry Sintonen discovered that curl built with libssh did not properly
handle authentication when performing SSH-based file transfers. This
could result in unintended authentication operations. This issue only
affected Ubuntu 22.04 LTS and Ubuntu 24.04 LTS. (CVE-2025-15224)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 20.04 LTS
curl 7.68.0-1ubuntu2.25+esm2
Available with Ubuntu Pro
libcurl4 7.68.0-1ubuntu2.25+esm2
Available with Ubuntu Pro
Ubuntu 18.04 LTS
curl 7.58.0-2ubuntu3.24+esm7
Available with Ubuntu Pro
libcurl4 7.58.0-2ubuntu3.24+esm7
Available with Ubuntu Pro
Ubuntu 16.04 LTS
curl 7.47.0-1ubuntu2.19+esm15
Available with Ubuntu Pro
libcurl3 7.47.0-1ubuntu2.19+esm15
Available with Ubuntu Pro
Ubuntu 14.04 LTS
curl 7.35.0-1ubuntu2.20+esm19
Available with Ubuntu Pro
libcurl3 7.35.0-1ubuntu2.20+esm19
Available with Ubuntu Pro
In general, a standard system update will make all the necessary changes.
References:
https://ubuntu.com/security/notices/USN-8062-2
https://ubuntu.com/security/notices/USN-8062-1
CVE-2025-14017, CVE-2025-15079, CVE-2025-15224
[USN-8068-1] Intel Microcode vulnerability
==========================================================================
Ubuntu Security Notice USN-8068-1
March 03, 2026
intel-microcode vulnerability
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 25.10
- Ubuntu 24.04 LTS
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS
Summary:
The system could be made to run programs as an administrator.
Software Description:
- intel-microcode: Processor microcode for Intel CPUs
Details:
Sergiu Ghetie discovered that some Intelprocessors did not properly
handle values in the microcode flow. A local authenticated user could
potentially use this issue to escalate their privileges.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 25.10
intel-microcode 3.20260210.0ubuntu0.25.10.1
Ubuntu 24.04 LTS
intel-microcode 3.20260210.0ubuntu0.24.04.1
Ubuntu 22.04 LTS
intel-microcode 3.20260210.0ubuntu0.22.04.1
Ubuntu 20.04 LTS
intel-microcode 3.20260210.0ubuntu0.20.04.1+esm1
Available with Ubuntu Pro
Ubuntu 18.04 LTS
intel-microcode 3.20260210.0ubuntu0.18.04.1+esm1
Available with Ubuntu Pro
Ubuntu 16.04 LTS
intel-microcode 3.20260210.0ubuntu0.16.04.1+esm1
Available with Ubuntu Pro
After a standard system update you need to reboot your computer to make
all the necessary changes.
References:
https://ubuntu.com/security/notices/USN-8068-1
CVE-2025-31648
Package Information:
https://launchpad.net/ubuntu/+source/intel-microcode/3.20260210.0ubuntu0.25.10.1
https://launchpad.net/ubuntu/+source/intel-microcode/3.20260210.0ubuntu0.24.04.1
https://launchpad.net/ubuntu/+source/intel-microcode/3.20260210.0ubuntu0.22.04.1
