Ubuntu Security Notice 6956-1 - Benedict Schlüter, Supraja Sridhara, Andrin Bertschi, and Shweta Shinde discovered that an untrusted hypervisor could inject malicious #VC interrupts and compromise the security guarantees of AMD SEV-SNP. This flaw is known as WeSee. A local attacker in control of the hypervisor could use this to expose sensitive information or possibly execute arbitrary code in the trusted execution environment. Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system.
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Ubuntu Security Notice USN-6956-1
August 12, 2024
linux-azure, linux-azure-5.15, linux-azure-fde, linux-azure-fde-5.15
vulnerabilities
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A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS
Summary:
Several security issues were fixed in the Linux kernel.
Software Description:
- linux-azure: Linux kernel for Microsoft Azure Cloud systems
- linux-azure-fde: Linux kernel for Microsoft Azure CVM cloud systems
- linux-azure-5.15: Linux kernel for Microsoft Azure cloud systems
- linux-azure-fde-5.15: Linux kernel for Microsoft Azure CVM cloud systems
Details:
Benedict Schlüter, Supraja Sridhara, Andrin Bertschi, and Shweta Shinde
discovered that an untrusted hypervisor could inject malicious #VC
interrupts and compromise the security guarantees of AMD SEV-SNP. This flaw
is known as WeSee. A local attacker in control of the hypervisor could use
this to expose sensitive information or possibly execute arbitrary code in
the trusted execution environment. (CVE-2024-25742)
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:
- ARM32 architecture;
- ARM64 architecture;
- Block layer subsystem;
- Bluetooth drivers;
- Clock framework and drivers;
- FireWire subsystem;
- GPU drivers;
- InfiniBand drivers;
- Multiple devices driver;
- EEPROM drivers;
- Network drivers;
- Pin controllers subsystem;
- Remote Processor subsystem;
- S/390 drivers;
- SCSI drivers;
- TTY drivers;
- 9P distributed file system;
- Network file system client;
- SMB network file system;
- Socket messages infrastructure;
- Dynamic debug library;
- Bluetooth subsystem;
- Networking core;
- IPv4 networking;
- IPv6 networking;
- Multipath TCP;
- Netfilter;
- NSH protocol;
- Phonet protocol;
- TIPC protocol;
- Wireless networking;
- Key management;
- ALSA framework;
- HD-audio driver;
(CVE-2024-36933, CVE-2024-36960, CVE-2024-26936, CVE-2024-36975,
CVE-2023-52882, CVE-2024-27401, CVE-2024-36929, CVE-2024-36939,
CVE-2024-35947, CVE-2024-36883, CVE-2024-26886, CVE-2024-36952,
CVE-2024-36950, CVE-2024-36940, CVE-2024-36897, CVE-2023-52585,
CVE-2024-26900, CVE-2024-36959, CVE-2024-36928, CVE-2024-36938,
CVE-2024-36016, CVE-2024-36965, CVE-2024-36967, CVE-2024-36889,
CVE-2024-36905, CVE-2024-36969, CVE-2024-36916, CVE-2024-36954,
CVE-2024-27017, CVE-2024-36941, CVE-2024-36957, CVE-2024-27399,
CVE-2024-36937, CVE-2024-36955, CVE-2024-38600, CVE-2023-52752,
CVE-2024-36953, CVE-2024-26980, CVE-2024-36902, CVE-2024-26952,
CVE-2024-36904, CVE-2024-36964, CVE-2024-36946, CVE-2024-36880,
CVE-2024-36906, CVE-2024-36947, CVE-2024-36886, CVE-2024-36934,
CVE-2024-35848, CVE-2024-36919, CVE-2024-36017, CVE-2024-36944,
CVE-2024-36931, CVE-2024-27398)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 22.04 LTS
linux-image-5.15.0-1070-azure 5.15.0-1070.79
linux-image-5.15.0-1070-azure-fde 5.15.0-1070.79.1
linux-image-azure-fde-lts-22.04 5.15.0.1070.79.47
linux-image-azure-lts-22.04 5.15.0.1070.68
Ubuntu 20.04 LTS
linux-image-5.15.0-1070-azure 5.15.0-1070.79~20.04.1
linux-image-5.15.0-1070-azure-fde 5.15.0-1070.79~20.04.1.1
linux-image-azure 5.15.0.1070.79~20.04.1
linux-image-azure-cvm 5.15.0.1070.79~20.04.1
linux-image-azure-fde 5.15.0.1070.79~20.04.1.47
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-6956-1
CVE-2023-52585, CVE-2023-52752, CVE-2023-52882, CVE-2024-25742,
CVE-2024-26886, CVE-2024-26900, CVE-2024-26936, CVE-2024-26952,
CVE-2024-26980, CVE-2024-27017, CVE-2024-27398, CVE-2024-27399,
CVE-2024-27401, CVE-2024-35848, CVE-2024-35947, CVE-2024-36016,
CVE-2024-36017, CVE-2024-36880, CVE-2024-36883, CVE-2024-36886,
CVE-2024-36889, CVE-2024-36897, CVE-2024-36902, CVE-2024-36904,
CVE-2024-36905, CVE-2024-36906, CVE-2024-36916, CVE-2024-36919,
CVE-2024-36928, CVE-2024-36929, CVE-2024-36931, CVE-2024-36933,
CVE-2024-36934, CVE-2024-36937, CVE-2024-36938, CVE-2024-36939,
CVE-2024-36940, CVE-2024-36941, CVE-2024-36944, CVE-2024-36946,
CVE-2024-36947, CVE-2024-36950, CVE-2024-36952, CVE-2024-36953,
CVE-2024-36954, CVE-2024-36955, CVE-2024-36957, CVE-2024-36959,
CVE-2024-36960, CVE-2024-36964, CVE-2024-36965, CVE-2024-36967,
CVE-2024-36969, CVE-2024-36975, CVE-2024-38600
Package Information:
https://launchpad.net/ubuntu/+source/linux-azure/5.15.0-1070.79
https://launchpad.net/ubuntu/+source/linux-azure-fde/5.15.0-1070.79.1
https://launchpad.net/ubuntu/+source/linux-azure-5.15/5.15.0-1070.79~20.04.1
https://launchpad.net/ubuntu/+source/linux-azure-fde-5.15/5.15.0-1070.79~20.04.1.1