USN-6740-1: Linux kernel vulnerabilities
Wei Chen discovered that a race condition existed in the TIPC protocol implementation in the Linux kernel, leading to a null pointer dereference vulnerability. A local attacker could use this to cause a denial of service (system crash). (CVE-2023-1382) It was discovered that the virtio network implementation in the Linux kernel did not properly handle file references in the host, leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service (system crash) or possibly expose sensitive information (kernel memory). (CVE-2023-1838) Jose Oliveira and Rodrigo Branco discovered that the Spectre Variant 2 mitigations with prctl syscall were insufficient in some situations. A local attacker could possibly use this to expose sensitive information. (CVE-2023-1998) Daniele Antonioli discovered that the Secure Simple Pairing and Secure Connections pairing in the Bluetooth protocol could allow an unauthenticated user to complete authentication without pairing credentials. A physically proximate attacker placed between two Bluetooth devices could use this to subsequently impersonate one of the paired devices. (CVE-2023-24023) shanzhulig discovered that the DRM subsystem in the Linux kernel contained a race condition when performing certain operation while handling driver unload, leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2023-51043) It was discovered that a race condition existed in the Bluetooth subsystem of the Linux kernel, leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2023-51779) It was discovered that the device mapper driver in the Linux kernel did not properly validate target size during certain memory allocations. A local attacker could use this to cause a denial of service (system crash). (CVE-2023-52429, CVE-2024-23851) Zhenghan Wang discovered that the generic ID allocator implementation in the Linux kernel did not properly check for null bitmap when releasing IDs. A local attacker could use this to cause a denial of service (system crash). (CVE-2023-6915) It was discovered that the SCTP protocol implementation in the Linux kernel contained a race condition when handling lock acquisition in certain situations. A local attacker could possibly use this to cause a denial of service (kernel deadlock). (CVE-2024-0639) 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:
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
ubuntu/linux-image-4.15.0-1130-oracleto a version that resolves this vulnerability.Fixed in Ubuntu Pro - Upgrade
Upgrade
ubuntu/linux-image-4.15.0-1151-kvmto a version that resolves this vulnerability.Fixed in Ubuntu Pro - Upgrade
Upgrade
ubuntu/linux-image-4.15.0-1161-gcpto a version that resolves this vulnerability.Fixed in Ubuntu Pro - Upgrade
Upgrade
ubuntu/linux-image-4.15.0-1167-awsto a version that resolves this vulnerability.Fixed in Ubuntu Pro - Upgrade
Upgrade
ubuntu/linux-image-4.15.0-1176-azureto a version that resolves this vulnerability.Fixed in Ubuntu Pro - Upgrade
Upgrade
ubuntu/linux-image-4.15.0-224-genericto a version that resolves this vulnerability.Fixed in Ubuntu Pro - Upgrade
Upgrade
ubuntu/linux-image-4.15.0-224-lowlatencyto a version that resolves this vulnerability.Fixed in Ubuntu Pro - Upgrade
Upgrade
ubuntu/linux-image-aws-lts-18.04to a version that resolves this vulnerability.Fixed in Ubuntu Pro - Upgrade
Upgrade
ubuntu/linux-image-azure-lts-18.04to a version that resolves this vulnerability.Fixed in Ubuntu Pro - Upgrade
Upgrade
ubuntu/linux-image-gcp-lts-18.04to a version that resolves this vulnerability.Fixed in Ubuntu Pro - Upgrade
Upgrade
ubuntu/linux-image-genericto a version that resolves this vulnerability.Fixed in Ubuntu Pro - Upgrade
Upgrade
ubuntu/linux-image-kvmto a version that resolves this vulnerability.Fixed in Ubuntu Pro - Upgrade
Upgrade
ubuntu/linux-image-lowlatencyto a version that resolves this vulnerability.Fixed in Ubuntu Pro - Upgrade
Upgrade
ubuntu/linux-image-oracle-lts-18.04to a version that resolves this vulnerability.Fixed in Ubuntu Pro - Upgrade
Upgrade
ubuntu/linux-image-virtualto a version that resolves this vulnerability.Fixed in Ubuntu Pro - Upgrade
Upgrade
ubuntu/linux-image-aws-hweto a version that resolves this vulnerability.Fixed in Ubuntu Pro - Upgrade
Upgrade
ubuntu/linux-image-azureto a version that resolves this vulnerability.Fixed in Ubuntu Pro - Upgrade
Upgrade
ubuntu/linux-image-gcpto a version that resolves this vulnerability.Fixed in Ubuntu Pro - Upgrade
Upgrade
ubuntu/linux-image-generic-hwe-16.04to a version that resolves this vulnerability.Fixed in Ubuntu Pro - Upgrade
Upgrade
ubuntu/linux-image-gketo a version that resolves this vulnerability.Fixed in Ubuntu Pro - Upgrade
Upgrade
ubuntu/linux-image-lowlatency-hwe-16.04to a version that resolves this vulnerability.Fixed in Ubuntu Pro - Upgrade
Upgrade
ubuntu/linux-image-oemto a version that resolves this vulnerability.Fixed in Ubuntu Pro - Upgrade
Upgrade
ubuntu/linux-image-oracleto a version that resolves this vulnerability.Fixed in Ubuntu Pro - Upgrade
Upgrade
ubuntu/linux-image-virtual-hwe-16.04to a version that resolves this vulnerability.Fixed in Ubuntu Pro
Event History
Child vulnerabilities
Contains the following vulnerabilities.
Frequently Asked Questions
What is the severity of USN-6740-1?
USN-6740-1 describes a moderate severity vulnerability due to a race condition in the TIPC protocol implementation, which can lead to a denial of service.
How do I fix USN-6740-1?
To fix USN-6740-1, you should update your Ubuntu system to the latest kernel versions listed in the advisory.
What products are affected by USN-6740-1?
USN-6740-1 affects Ubuntu 16.04 and 18.04 versions that use specific kernel packages.
Who is likely to exploit USN-6740-1?
A local attacker with access to the system could exploit USN-6740-1 to cause a denial of service.
What should I do if I cannot update my system for USN-6740-1?
If you cannot update your system, consider implementing additional network security measures to limit access to affected systems until a patch can be applied.