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Ubuntu Security Notice USN-6445-1

Posted Oct 20, 2023

Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 6445-1 - It was discovered that the IPv6 implementation in the Linux kernel contained a high rate of hash collisions in connection lookup table. A remote attacker could use this to cause a denial of service. Daniel Trujillo, Johannes Wikner, and Kaveh Razavi discovered that some AMD processors utilising speculative execution and branch prediction may allow unauthorised memory reads via a speculative side-channel attack. A local attacker could use this to expose sensitive information, including kernel memory.

tags | advisory, remote, denial of service, kernel, local

systems | linux, ubuntu

advisories | CVE-2023-1206, CVE-2023-20569, CVE-2023-2156, CVE-2023-3338, CVE-2023-34319, CVE-2023-38432, CVE-2023-3863, CVE-2023-3865, CVE-2023-3866, CVE-2023-4132, CVE-2023-4155, CVE-2023-4194, CVE-2023-4244, CVE-2023-4273

SHA-256 | e6b24dd74615cc6c00bd4c9686d9c6103de24a03be2c7b72a6caee0cd088dc72

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