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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: <49d4e166-aac2-4fef-bce5-efbf61f265b2@canonical.com>
Subject: [USN-6976-1] Linux kernel vulnerabilities
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==========================================================================
Ubuntu Security Notice USN-6976-1
August 21, 2024
linux, linux-aws, linux-kvm, linux-lts-xenial vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 16.04 LTS
- Ubuntu 14.04 LTS
Summary:
Several security issues were fixed in the Linux kernel.
Software Description:
- linux: Linux kernel
- linux-aws: Linux kernel for Amazon Web Services (AWS) systems
- linux-kvm: Linux kernel for cloud environments
- linux-lts-xenial: Linux hardware enablement kernel from Xenial for Trusty
Details:
Yuxuan Hu discovered that the Bluetooth RFCOMM protocol driver in the Linux
Kernel contained a race condition, leading to a NULL pointer dereference.
An attacker could possibly use this to cause a denial of service (system
crash). (CVE-2024-22099)
It was discovered that a race condition existed in the Bluetooth subsystem
in the Linux kernel, leading to a null pointer dereference vulnerability. A
privileged local attacker could use this to possibly cause a denial of
service (system crash). (CVE-2024-24860)
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:
- SuperH RISC architecture;
- User-Mode Linux (UML);
- GPU drivers;
- HID subsystem;
- MMC subsystem;
- Network drivers;
- PHY drivers;
- SCSI drivers;
- USB subsystem;
- Xen hypervisor drivers;
- GFS2 file system;
- Memory management;
- Bluetooth subsystem;
- IPv4 networking;
- IPv6 networking;
- NFC subsystem;
- HD-audio driver;
- ALSA SH drivers;
(CVE-2023-52806, CVE-2021-46924, CVE-2021-47521, CVE-2021-47542,
CVE-2024-26903, CVE-2024-26654, CVE-2024-27013, CVE-2024-26600,
CVE-2021-47518, CVE-2021-47171, CVE-2023-52629, CVE-2023-52644,
CVE-2021-46904, CVE-2023-52470, CVE-2024-36901, CVE-2021-46906,
CVE-2024-39292, CVE-2022-48659, CVE-2021-47173, CVE-2021-47571,
CVE-2024-26929, CVE-2024-39484, CVE-2024-26687, CVE-2024-26679,
CVE-2023-52760)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 16.04 LTS
linux-image-4.4.0-1136-kvm 4.4.0-1136.146
Available with Ubuntu Pro
linux-image-4.4.0-1173-aws 4.4.0-1173.188
Available with Ubuntu Pro
linux-image-4.4.0-258-generic 4.4.0-258.292
Available with Ubuntu Pro
linux-image-4.4.0-258-lowlatency 4.4.0-258.292
Available with Ubuntu Pro
linux-image-aws 4.4.0.1173.177
Available with Ubuntu Pro
linux-image-generic 4.4.0.258.264
Available with Ubuntu Pro
linux-image-generic-lts-xenial 4.4.0.258.264
Available with Ubuntu Pro
linux-image-kvm 4.4.0.1136.133
Available with Ubuntu Pro
linux-image-lowlatency 4.4.0.258.264
Available with Ubuntu Pro
linux-image-lowlatency-lts-xenial 4.4.0.258.264
Available with Ubuntu Pro
linux-image-virtual 4.4.0.258.264
Available with Ubuntu Pro
linux-image-virtual-lts-xenial 4.4.0.258.264
Available with Ubuntu Pro
Ubuntu 14.04 LTS
linux-image-4.4.0-1135-aws 4.4.0-1135.141
Available with Ubuntu Pro
linux-image-4.4.0-258-generic 4.4.0-258.292~14.04.2
Available with Ubuntu Pro
linux-image-4.4.0-258-lowlatency 4.4.0-258.292~14.04.2
Available with Ubuntu Pro
linux-image-aws 4.4.0.1135.132
Available with Ubuntu Pro
linux-image-generic-lts-xenial 4.4.0.258.292~14.04.2
Available with Ubuntu Pro
linux-image-lowlatency-lts-xenial 4.4.0.258.292~14.04.2
Available with Ubuntu Pro
linux-image-virtual-lts-xenial 4.4.0.258.292~14.04.2
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-6976-1
CVE-2021-46904, CVE-2021-46906, CVE-2021-46924, CVE-2021-47171,
CVE-2021-47173, CVE-2021-47518, CVE-2021-47521, CVE-2021-47542,
CVE-2021-47571, CVE-2022-48659, CVE-2023-52470, CVE-2023-52629,
CVE-2023-52644, CVE-2023-52760, CVE-2023-52806, CVE-2024-22099,
CVE-2024-24860, CVE-2024-26600, CVE-2024-26654, CVE-2024-26679,
CVE-2024-26687, CVE-2024-26903, CVE-2024-26929, CVE-2024-27013,
CVE-2024-36901, CVE-2024-39292, CVE-2024-39484
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