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CVE-2022-1012

Status Candidate

Overview

A memory leak problem was found in the TCP source port generation algorithm in net/ipv4/tcp.c due to the small table perturb size. This flaw may allow an attacker to information leak and may cause a denial of service problem.

Related Files

Ubuntu Security Notice USN-5471-1
Posted Jun 8, 2022
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5471-1 - It was discovered that the Linux kernel did not properly restrict access to the kernel debugger when booted in secure boot environments. A privileged attacker could use this to bypass UEFI Secure Boot restrictions. Aaron Adams discovered that the netfilter subsystem in the Linux kernel did not properly handle the removal of stateful expressions in some situations, leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service or execute arbitrary code.

tags | advisory, denial of service, arbitrary, kernel, local
systems | linux, ubuntu
advisories | CVE-2022-1012, CVE-2022-1205, CVE-2022-1734, CVE-2022-1836, CVE-2022-1966, CVE-2022-1972, CVE-2022-21499, CVE-2022-29968
SHA-256 | ccede091516fe62bd32719c398450aaaf07d69cacfd458d05e1db5e69a87a58b
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