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Ubuntu Security Notice USN-6441-1

Posted Oct 20, 2023

Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 6441-1 - Ross Lagerwall discovered that the Xen netback backend driver in the Linux kernel did not properly handle certain unusual packets from a paravirtualized network frontend, leading to a buffer overflow. An attacker in a guest VM could use this to cause a denial of service or possibly execute arbitrary code. Kyle Zeng discovered that the networking stack implementation in the Linux kernel did not properly validate skb object size in certain conditions. An attacker could use this cause a denial of service or possibly execute arbitrary code.

tags | advisory, denial of service, overflow, arbitrary, kernel

systems | linux, ubuntu

advisories | CVE-2023-34319, CVE-2023-42752, CVE-2023-42753, CVE-2023-42755, CVE-2023-42756, CVE-2023-4622, CVE-2023-4623, CVE-2023-4881, CVE-2023-4921

SHA-256 | a66b0d7f031b83030940495dffa4d55e99dd4144b4b592319cafa0610e3bf224

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