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CVE-2022-29581

Status Candidate

Overview

Improper Update of Reference Count vulnerability in net/sched of Linux Kernel allows local attacker to cause privilege escalation to root. This issue affects: Linux Kernel versions prior to 5.18; version 4.14 and later versions.

Related Files

Kernel Live Patch Security Notice LSN-0089-1
Posted Aug 30, 2022
Authored by Benjamin M. Romer

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. Ziming Zhang discovered that the netfilter subsystem in the Linux kernel did not properly validate sets with multiple ranged fields. It was discovered that the implementation of POSIX timers in the Linux kernel did not properly clean up timers in some situations. Various other vulnerabilities were also discovered.

tags | advisory, kernel, vulnerability
systems | linux, osx
advisories | CVE-2022-1966, CVE-2022-1972, CVE-2022-21499, CVE-2022-2585, CVE-2022-2586, CVE-2022-2588, CVE-2022-29581, CVE-2022-34918
SHA-256 | 05867268c3cb4a38f1e83386efef57668577cf6a6daf5f223e85f17b2010f8e2
Kernel Live Patch Security Notice LSN-0086-1
Posted Jun 3, 2022
Authored by Benjamin M. Romer

It was discovered that a race condition existed in the network scheduling 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. Yiqi Sun and Kevin Wang discovered that the cgroups implementation in the Linux kernel did not properly restrict access to the cgroups v1 release_agent feature. A local attacker could use this to gain administrative privileges. Various other issues were also addressed.

tags | advisory, denial of service, arbitrary, kernel, local
systems | linux
advisories | CVE-2021-39713, CVE-2022-0492, CVE-2022-1055, CVE-2022-1116, CVE-2022-21499, CVE-2022-29581, CVE-2022-30594
SHA-256 | d764344ffd074691e5125e0c7ecb9972329d587b004cdad9acfe1fafabfb0253
Ubuntu Security Notice USN-5443-2
Posted Jun 1, 2022
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5443-2 - Kyle Zeng discovered that the Network Queuing and Scheduling subsystem of the Linux kernel did not properly perform reference counting 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. Jann Horn discovered that the Linux kernel did not properly enforce seccomp restrictions in some situations. A local attacker could use this to bypass intended seccomp sandbox restrictions.

tags | advisory, denial of service, arbitrary, kernel, local
systems | linux, ubuntu
advisories | CVE-2022-29581, CVE-2022-30594
SHA-256 | d9db3c4379a58440851b2d6e71caae3d47d27c20b77c8e1811ef18f4fc1efaf6
Ubuntu Security Notice USN-5442-2
Posted Jun 1, 2022
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5442-2 - Kyle Zeng discovered that the Network Queuing and Scheduling subsystem of the Linux kernel did not properly perform reference counting 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. Bing-Jhong Billy Jheng discovered that the io_uring subsystem in the Linux kernel contained in integer overflow. A local attacker could use this to cause a denial of service or execute arbitrary code.

tags | advisory, denial of service, overflow, arbitrary, kernel, local
systems | linux, ubuntu
advisories | CVE-2022-1116, CVE-2022-29581, CVE-2022-30594
SHA-256 | 5632e668ad026b3cc2fecc2e4439dd6df764ced86921dd64641d8fd7bcfcf72c
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