USN-6821-4: Linux kernel (Azure) vulnerabilities
It was discovered that the ATA over Ethernet (AoE) driver in the Linux kernel contained a race condition, leading to a use-after-free vulnerability. An attacker could use this to cause a denial of service or possibly execute arbitrary code. (CVE-2023-6270) It was discovered that the Atheros 802.11ac wireless driver did not properly validate certain data structures, leading to a NULL pointer dereference. An attacker could possibly use this to cause a denial of service. (CVE-2023-7042) It was discovered that the HugeTLB file system component of the Linux Kernel contained a NULL pointer dereference vulnerability. A privileged attacker could possibly use this to to cause a denial of service. (CVE-2024-0841) 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) 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
Event History
Frequently Asked Questions
What is the severity of USN-6821-4?
The severity of USN-6821-4 is high due to the potential for denial of service and arbitrary code execution.
How do I fix USN-6821-4?
To fix USN-6821-4, update to the recommended kernel versions provided in the advisory.
What systems are affected by USN-6821-4?
USN-6821-4 affects Ubuntu 22.04 systems that use specific versions of the Linux kernel including linux-image-5.15.0-1065-azure and linux-image-5.15.0-1066-azure.
What is the nature of the vulnerability in USN-6821-4?
The vulnerability identified in USN-6821-4 is a race condition in the ATA over Ethernet driver, leading to a use-after-free condition.
Can USN-6821-4 be exploited remotely?
Yes, this vulnerability can potentially be exploited remotely, allowing attackers to cause denial of service or execute arbitrary code.