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CVE-2023-23454

Status Candidate

Overview

cbq_classify in net/sched/sch_cbq.c in the Linux kernel through 6.1.4 allows attackers to cause a denial of service (slab-out-of-bounds read) because of type confusion (non-negative numbers can sometimes indicate a TC_ACT_SHOT condition rather than valid classification results).

Related Files

Ubuntu Security Notice USN-6004-1
Posted Apr 12, 2023
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 6004-1 - It was discovered that the KVM VMX implementation in the Linux kernel did not properly handle indirect branch prediction isolation between L1 and L2 VMs. An attacker in a guest VM could use this to expose sensitive information from the host OS or other guest VMs. It was discovered that a use-after-free vulnerability existed in the SGI GRU driver in the Linux kernel. A local attacker could possibly use this to cause a denial of service or possibly execute arbitrary code.

tags | advisory, denial of service, arbitrary, kernel, local
systems | linux, ubuntu
advisories | CVE-2022-2196, CVE-2022-3424, CVE-2022-36280, CVE-2022-41218, CVE-2022-4382, CVE-2022-48423, CVE-2022-48424, CVE-2023-0045, CVE-2023-0210, CVE-2023-0266, CVE-2023-23454, CVE-2023-23455, CVE-2023-23559, CVE-2023-26606
SHA-256 | cabcdc25961ee369304092af7380ed42dd5a5ca767df881b09baa5dd34bba804
Ubuntu Security Notice USN-5987-1
Posted Mar 30, 2023
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5987-1 - It was discovered that the KVM VMX implementation in the Linux kernel did not properly handle indirect branch prediction isolation between L1 and L2 VMs. An attacker in a guest VM could use this to expose sensitive information from the host OS or other guest VMs. It was discovered that a use-after-free vulnerability existed in the SGI GRU driver in the Linux kernel. A local attacker could possibly use this to cause a denial of service or possibly execute arbitrary code.

tags | advisory, denial of service, arbitrary, kernel, local
systems | linux, ubuntu
advisories | CVE-2022-2196, CVE-2022-3424, CVE-2022-36280, CVE-2022-41218, CVE-2022-4382, CVE-2022-48423, CVE-2022-48424, CVE-2023-0045, CVE-2023-0210, CVE-2023-0266, CVE-2023-23454, CVE-2023-23455, CVE-2023-23559, CVE-2023-26606
SHA-256 | 3ea2c4f328cd7b670a3685872b3e880855897778278430f766f4304cd2a0e323
Ubuntu Security Notice USN-5982-1
Posted Mar 29, 2023
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5982-1 - It was discovered that the KVM VMX implementation in the Linux kernel did not properly handle indirect branch prediction isolation between L1 and L2 VMs. An attacker in a guest VM could use this to expose sensitive information from the host OS or other guest VMs. It was discovered that a use-after-free vulnerability existed in the SGI GRU driver in the Linux kernel. A local attacker could possibly use this to cause a denial of service or possibly execute arbitrary code.

tags | advisory, denial of service, arbitrary, kernel, local
systems | linux, ubuntu
advisories | CVE-2022-2196, CVE-2022-3424, CVE-2022-36280, CVE-2022-41218, CVE-2022-4382, CVE-2022-48423, CVE-2022-48424, CVE-2023-0045, CVE-2023-0210, CVE-2023-0266, CVE-2023-23454, CVE-2023-23455, CVE-2023-23559, CVE-2023-26606
SHA-256 | 5652c2a45a4bbe47c88d9cd205f2eefdfaddf085966095c6c46631f3413ef26d
Ubuntu Security Notice USN-5915-1
Posted Mar 3, 2023
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5915-1 - It was discovered that the Upper Level Protocol subsystem in the Linux kernel did not properly handle sockets entering the LISTEN state in certain protocols, leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. Davide Ornaghi discovered that the netfilter subsystem in the Linux kernel did not properly handle VLAN headers in some situations. A local attacker could use this to cause a denial of service or possibly execute arbitrary code.

tags | advisory, denial of service, arbitrary, kernel, local, protocol
systems | linux, ubuntu
advisories | CVE-2022-36280, CVE-2022-3707, CVE-2022-41218, CVE-2022-4379, CVE-2022-47929, CVE-2023-0045, CVE-2023-0179, CVE-2023-0210, CVE-2023-0266, CVE-2023-0461, CVE-2023-23454, CVE-2023-23455
SHA-256 | a4e941cc687d32266ba47b7371b3ed1b3f6a282407d5aa34a03743e1f6f004a6
Debian Security Advisory 5324-1
Posted Jan 24, 2023
Authored by Debian | Site debian.org

Debian Linux Security Advisory 5324-1 - Several vulnerabilities have been discovered in the Linux kernel that may lead to a privilege escalation, denial of service or information leaks.

tags | advisory, denial of service, kernel, vulnerability
systems | linux, debian
advisories | CVE-2022-2873, CVE-2022-3545, CVE-2022-3623, CVE-2022-36280, CVE-2022-41218, CVE-2022-45934, CVE-2022-4696, CVE-2022-47929, CVE-2023-0179, CVE-2023-0266, CVE-2023-0394, CVE-2023-23454, CVE-2023-23455
SHA-256 | 4738a5dd5b6f53a56ab15c9bc642f4b021b4a873119259aea80dd67e167ed354
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