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CVE-2021-4203

Status Candidate

Overview

A use-after-free read flaw was found in sock_getsockopt() in net/core/sock.c due to SO_PEERCRED and SO_PEERGROUPS race with listen() (and connect()) in the Linux kernel. In this flaw, an attacker with a user privileges may crash the system or leak internal kernel information.

Related Files

Ubuntu Security Notice USN-6014-1
Posted Apr 13, 2023
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 6014-1 - Xuewei Feng, Chuanpu Fu, Qi Li, Kun Sun, and Ke Xu discovered that the TCP implementation in the Linux kernel did not properly handle IPID assignment. A remote attacker could use this to cause a denial of service or inject forged data. Ke Sun, Alyssa Milburn, Henrique Kawakami, Emma Benoit, Igor Chervatyuk, Lisa Aichele, and Thais Moreira Hamasaki discovered that the Spectre Variant 2 mitigations for AMD processors on Linux were insufficient in some situations. A local attacker could possibly use this to expose sensitive information.

tags | advisory, remote, denial of service, kernel, local, tcp
systems | linux, ubuntu
advisories | CVE-2020-36516, CVE-2021-26401, CVE-2021-28713, CVE-2021-3428, CVE-2021-3659, CVE-2021-3669, CVE-2021-3732, CVE-2021-3772, CVE-2021-4149, CVE-2021-4203, CVE-2021-45868, CVE-2022-0487, CVE-2022-0494, CVE-2022-0617
SHA-256 | b35ca435930e16fd5c80695ace0a0339c873cee40fdedf7c96c3a446b1a7ff00
Ubuntu Security Notice USN-6013-1
Posted Apr 12, 2023
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 6013-1 - Xuewei Feng, Chuanpu Fu, Qi Li, Kun Sun, and Ke Xu discovered that the TCP implementation in the Linux kernel did not properly handle IPID assignment. A remote attacker could use this to cause a denial of service or inject forged data. Ke Sun, Alyssa Milburn, Henrique Kawakami, Emma Benoit, Igor Chervatyuk, Lisa Aichele, and Thais Moreira Hamasaki discovered that the Spectre Variant 2 mitigations for AMD processors on Linux were insufficient in some situations. A local attacker could possibly use this to expose sensitive information.

tags | advisory, remote, denial of service, kernel, local, tcp
systems | linux, ubuntu
advisories | CVE-2020-36516, CVE-2021-26401, CVE-2021-3428, CVE-2021-3659, CVE-2021-3669, CVE-2021-3732, CVE-2021-3772, CVE-2021-4149, CVE-2021-4203, CVE-2021-45868, CVE-2022-0487, CVE-2022-0494, CVE-2022-0617, CVE-2022-1016
SHA-256 | a9c225928b1c28bf90c101180a361e5db4576ba6b23acb6d2f68a5da43566ceb
Ubuntu Security Notice USN-6001-1
Posted Apr 6, 2023
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 6001-1 - Xuewei Feng, Chuanpu Fu, Qi Li, Kun Sun, and Ke Xu discovered that the TCP implementation in the Linux kernel did not properly handle IPID assignment. A remote attacker could use this to cause a denial of service or inject forged data. Ke Sun, Alyssa Milburn, Henrique Kawakami, Emma Benoit, Igor Chervatyuk, Lisa Aichele, and Thais Moreira Hamasaki discovered that the Spectre Variant 2 mitigations for AMD processors on Linux were insufficient in some situations. A local attacker could possibly use this to expose sensitive information.

tags | advisory, remote, denial of service, kernel, local, tcp
systems | linux, ubuntu
advisories | CVE-2020-36516, CVE-2021-26401, CVE-2021-28713, CVE-2021-3428, CVE-2021-3659, CVE-2021-3669, CVE-2021-3732, CVE-2021-3772, CVE-2021-4149, CVE-2021-4203, CVE-2021-45868, CVE-2022-0487, CVE-2022-0494, CVE-2022-0617
SHA-256 | 41aeeefd2d4b93824f7651b99bd053dcc55a7bddef73bc96c89bc61e6121be0c
Red Hat Security Advisory 2022-6053-01
Posted Aug 23, 2022
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2022-6053-01 - Red Hat OpenShift Container Platform is Red Hat's cloud computing Kubernetes application platform solution designed for on-premise or private cloud deployments. This advisory contains the container images for Red Hat OpenShift Container Platform 4.7.56.

tags | advisory
systems | linux, redhat
advisories | CVE-2020-29368, CVE-2021-4197, CVE-2021-4203, CVE-2022-1012, CVE-2022-1729, CVE-2022-21540, CVE-2022-21541, CVE-2022-30631, CVE-2022-32250, CVE-2022-34169
SHA-256 | a7ccf49e5d5fabb893201270bb9b906591faff1cc62baab74a3927a8077a758c
Red Hat Security Advisory 2022-5879-01
Posted Aug 10, 2022
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2022-5879-01 - Red Hat OpenShift Container Platform is Red Hat's cloud computing Kubernetes application platform solution designed for on-premise or private cloud deployments. This advisory contains the container images for Red Hat OpenShift Container Platform 4.9.45.

tags | advisory
systems | linux, redhat
advisories | CVE-2020-29368, CVE-2021-4197, CVE-2021-4203, CVE-2022-1012, CVE-2022-1729, CVE-2022-21540, CVE-2022-21541, CVE-2022-2403, CVE-2022-32250, CVE-2022-34169
SHA-256 | 954ba3d44e847b38ef08b306ba9eb1fd6b913c197417c0c9e44eb925170f6b84
Red Hat Security Advisory 2022-5730-01
Posted Aug 4, 2022
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2022-5730-01 - Red Hat OpenShift Container Platform is Red Hat's cloud computing Kubernetes application platform solution designed for on-premise or private cloud deployments. This advisory contains the container images for Red Hat OpenShift Container Platform 4.10.25.

tags | advisory
systems | linux, redhat
advisories | CVE-2020-29368, CVE-2021-4197, CVE-2021-4203, CVE-2022-1012, CVE-2022-1729, CVE-2022-21540, CVE-2022-21541, CVE-2022-23772, CVE-2022-24675, CVE-2022-24921, CVE-2022-32250, CVE-2022-34169
SHA-256 | e525d06407e4223a8a0233610319ed4f467126b67fe9026741ae52cbd2b2d4e3
Red Hat Security Advisory 2022-5626-01
Posted Jul 27, 2022
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2022-5626-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. Issues addressed include information leakage, memory leak, privilege escalation, and use-after-free vulnerabilities.

tags | advisory, kernel, vulnerability, memory leak
systems | linux, redhat
advisories | CVE-2020-29368, CVE-2021-4197, CVE-2021-4203, CVE-2022-1012, CVE-2022-1729, CVE-2022-32250
SHA-256 | da915e732da46c5e5a9301aa96e4776d99a12c9828ca044e9ab20b0552fa0cee
Red Hat Security Advisory 2022-5633-01
Posted Jul 27, 2022
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2022-5633-01 - The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements. Issues addressed include information leakage, privilege escalation, and use-after-free vulnerabilities.

tags | advisory, kernel, vulnerability
systems | linux, redhat
advisories | CVE-2020-29368, CVE-2021-4197, CVE-2021-4203, CVE-2022-1012, CVE-2022-1729, CVE-2022-32250
SHA-256 | 4d0cfa27ae3862f0fc26767d832abe7ef9ed85fe0c95dc9146bce5dd62c81ef7
Red Hat Security Advisory 2022-1988-01
Posted May 11, 2022
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2022-1988-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. Issues addressed include buffer overflow, denial of service, information leakage, integer overflow, memory leak, out of bounds read, out of bounds write, privilege escalation, and use-after-free vulnerabilities.

tags | advisory, denial of service, overflow, kernel, vulnerability, memory leak
systems | linux, redhat
advisories | CVE-2020-0404, CVE-2020-13974, CVE-2020-27820, CVE-2020-4788, CVE-2021-0941, CVE-2021-20322, CVE-2021-21781, CVE-2021-26401, CVE-2021-29154, CVE-2021-3612, CVE-2021-3669, CVE-2021-37159, CVE-2021-3743, CVE-2021-3744, CVE-2021-3752, CVE-2021-3759, CVE-2021-3764, CVE-2021-3772, CVE-2021-3773, CVE-2021-4002, CVE-2021-4037, CVE-2021-4083, CVE-2021-4157, CVE-2021-41864, CVE-2021-4197, CVE-2021-4203, CVE-2021-42739, CVE-2021-4305
SHA-256 | 37a2bc5df5427ed04000a8d10823bd2aed8f25a960acdbe741e5cfa028d617df
Red Hat Security Advisory 2022-1975-01
Posted May 11, 2022
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2022-1975-01 - The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements. Issues addressed include buffer overflow, denial of service, information leakage, integer overflow, out of bounds read, out of bounds write, privilege escalation, and use-after-free vulnerabilities.

tags | advisory, denial of service, overflow, kernel, vulnerability
systems | linux, redhat
advisories | CVE-2020-0404, CVE-2020-13974, CVE-2020-27820, CVE-2021-0941, CVE-2021-20322, CVE-2021-26401, CVE-2021-29154, CVE-2021-3612, CVE-2021-3669, CVE-2021-37159, CVE-2021-3743, CVE-2021-3744, CVE-2021-3752, CVE-2021-3759, CVE-2021-3764, CVE-2021-3772, CVE-2021-3773, CVE-2021-4002, CVE-2021-4037, CVE-2021-4083, CVE-2021-4157, CVE-2021-41864, CVE-2021-4197, CVE-2021-4203, CVE-2021-42739, CVE-2021-43389, CVE-2021-43976
SHA-256 | 76e7a83f67a9594d044f0555940c9cdc95fcacfd7cb6fe3ce07a4e4115106e22
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