USN-6646-1

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USN-6646-1

Summary: linux, linux-aws, linux-kvm, linux-lts-xenial vulnerabilities

Details: It was discovered that a race condition existed in the ATM (Asynchronous Transfer Mode) 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-2023-51780) It was discovered that a race condition existed in the Rose X.25 protocol implementation in 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-2023-51782) It was discovered that the netfilter connection tracker for netlink in the Linux kernel did not properly perform reference counting in some error conditions. A local attacker could possibly use this to cause a denial of service (memory exhaustion). (CVE-2023-7192)

References: https://ubuntu.com/security/notices/USN-6646-1, https://ubuntu.com/security/CVE-2023-7192, https://ubuntu.com/security/CVE-2023-51780, https://ubuntu.com/security/CVE-2023-51782