USN-6819-2: Linux kernel vulnerabilities
Alon Zahavi discovered that the NVMe-oF/TCP subsystem in the Linux kernel did not properly validate H2C PDU data, leading to a null pointer dereference vulnerability. A remote attacker could use this to cause a denial of service (system crash). (CVE-2023-6356, CVE-2023-6535, CVE-2023-6536) Chenyuan Yang discovered that the RDS Protocol implementation in the Linux kernel contained an out-of-bounds read vulnerability. An attacker could use this to possibly cause a denial of service (system crash). (CVE-2024-23849) 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:
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
ubuntu/linux-image-6.5.0-1021-awsto a version that resolves this vulnerability.Fixed in 6.5.0-1021.21 - Upgrade
Upgrade
ubuntu/linux-image-6.5.0-1024-oracleto a version that resolves this vulnerability.Fixed in 6.5.0-1024.24 - Upgrade
Upgrade
ubuntu/linux-image-6.5.0-1024-oracle-64kto a version that resolves this vulnerability.Fixed in 6.5.0-1024.24 - Upgrade
Upgrade
ubuntu/linux-image-awsto a version that resolves this vulnerability.Fixed in 6.5.0.1021.21 - Upgrade
Upgrade
ubuntu/linux-image-oracleto a version that resolves this vulnerability.Fixed in 6.5.0.1024.26 - Upgrade
Upgrade
ubuntu/linux-image-oracle-64kto a version that resolves this vulnerability.Fixed in 6.5.0.1024.26 - Upgrade
Upgrade
Linux kernelto a version that resolves this vulnerability.Patch USN-6819-2
Event History
Frequently Asked Questions
What is the severity of USN-6819-2?
The severity of USN-6819-2 is critical due to the potential for a remote attacker to cause a denial of service.
How do I fix USN-6819-2?
You can fix USN-6819-2 by upgrading to the recommended version of the affected packages, as specified in the advisory.
Which versions of Ubuntu are affected by USN-6819-2?
Ubuntu 23.10 is affected by USN-6819-2 regarding the NVMe-oF/TCP subsystem vulnerability.
What types of vulnerabilities are included in USN-6819-2?
USN-6819-2 includes vulnerabilities that can lead to a null pointer dereference and potential system crashes.
Who discovered the vulnerability in USN-6819-2?
The vulnerability described in USN-6819-2 was discovered by Alon Zahavi.