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CVE-2021-38201

Status Candidate

Overview

net/sunrpc/xdr.c in the Linux kernel before 5.13.4 allows remote attackers to cause a denial of service (xdr_set_page_base slab-out-of-bounds access) by performing many NFS 4.2 READ_PLUS operations.

Related Files

Ubuntu Security Notice USN-5092-3
Posted Oct 19, 2021
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5092-3 - USN-5092-2 fixed vulnerabilities in Linux 5.11-based kernels. Unfortunately, for Linux kernels intended for use within Microsoft Azure environments, that update introduced a regression that could cause the kernel to fail to boot in large Azure instance types. This update fixes the problem. Various other issues were also addressed.

tags | advisory, kernel, vulnerability
systems | linux, ubuntu
advisories | CVE-2021-33624, CVE-2021-34556, CVE-2021-35477, CVE-2021-3679, CVE-2021-37159, CVE-2021-37576, CVE-2021-38160, CVE-2021-38199, CVE-2021-38201, CVE-2021-38204, CVE-2021-38205, CVE-2021-41073
SHA-256 | 2f8462834b9c412b2c94caea0415569d6a8d0a25ce4c553b1643bb9766389a30
Ubuntu Security Notice USN-5096-1
Posted Sep 30, 2021
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5096-1 - Valentina Palmiotti discovered that the io_uring subsystem in the Linux kernel could be coerced to free adjacent memory. A local attacker could use this to execute arbitrary code. Benedict Schlueter discovered that the BPF subsystem in the Linux kernel did not properly protect against Speculative Store Bypass side- channel attacks in some situations. A local attacker could possibly use this to expose sensitive information. Various other issues were also addressed.

tags | advisory, arbitrary, kernel, local
systems | linux, ubuntu
advisories | CVE-2021-34556, CVE-2021-35477, CVE-2021-3612, CVE-2021-3679, CVE-2021-37159, CVE-2021-3732, CVE-2021-38160, CVE-2021-38166, CVE-2021-38199, CVE-2021-38201, CVE-2021-38202, CVE-2021-38203, CVE-2021-38204, CVE-2021-38205, CVE-2021-40490, CVE-2021-41073
SHA-256 | 98f615f379d8346abea7dc65ffd543f999a46dbda2ec8a72bcaac4dbaea40126
Red Hat Security Advisory 2021-3694-01
Posted Sep 30, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-3694-01 - The Migration Toolkit for Containers enables you to migrate Kubernetes resources, persistent volume data, and internal container images between OpenShift Container Platform clusters, using the MTC web console or the Kubernetes API. Issues addressed include a denial of service vulnerability.

tags | advisory, web, denial of service
systems | linux, redhat
advisories | CVE-2021-22922, CVE-2021-22923, CVE-2021-22924, CVE-2021-36222, CVE-2021-3749, CVE-2021-37576, CVE-2021-37750, CVE-2021-38201
SHA-256 | b1ce9e701282280a5c2dbdfafd7782a607b33f330152c096fdc1e2b3c2debde0
Ubuntu Security Notice USN-5092-2
Posted Sep 29, 2021
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5092-2 - Valentina Palmiotti discovered that the io_uring subsystem in the Linux kernel could be coerced to free adjacent memory. A local attacker could use this to execute arbitrary code. Ofek Kirzner, Adam Morrison, Benedict Schlueter, and Piotr Krysiuk discovered that the BPF verifier in the Linux kernel missed possible mispredicted branches due to type confusion, allowing a side-channel attack. An attacker could use this to expose sensitive information. Various other issues were also addressed.

tags | advisory, arbitrary, kernel, local
systems | linux, ubuntu
advisories | CVE-2021-33624, CVE-2021-34556, CVE-2021-35477, CVE-2021-3679, CVE-2021-37159, CVE-2021-37576, CVE-2021-38160, CVE-2021-38199, CVE-2021-38201, CVE-2021-38204, CVE-2021-38205, CVE-2021-41073
SHA-256 | fe6e6f7b890fe9c454e6d8b6981a93e9900e3e12cc8de38080233a23b6f9f395
Ubuntu Security Notice USN-5092-1
Posted Sep 28, 2021
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5092-1 - Valentina Palmiotti discovered that the io_uring subsystem in the Linux kernel could be coerced to free adjacent memory. A local attacker could use this to execute arbitrary code. Ofek Kirzner, Adam Morrison, Benedict Schlueter, and Piotr Krysiuk discovered that the BPF verifier in the Linux kernel missed possible mispredicted branches due to type confusion, allowing a side-channel attack. An attacker could use this to expose sensitive information. Various other issues were also addressed.

tags | advisory, arbitrary, kernel, local
systems | linux, ubuntu
advisories | CVE-2021-33624, CVE-2021-34556, CVE-2021-35477, CVE-2021-3679, CVE-2021-37159, CVE-2021-37576, CVE-2021-38160, CVE-2021-38199, CVE-2021-38201, CVE-2021-38204, CVE-2021-38205, CVE-2021-41073
SHA-256 | ebcf129926760acf6a8d3e98fe23c9b1ac0c8a4d82db537ed58774cee102bccf
Red Hat Security Advisory 2021-3598-01
Posted Sep 21, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-3598-01 - OpenShift Virtualization is Red Hat's virtualization solution designed for Red Hat OpenShift Container Platform.

tags | advisory
systems | linux, redhat
advisories | CVE-2021-22543, CVE-2021-22555, CVE-2021-27218, CVE-2021-33195, CVE-2021-33197, CVE-2021-33198, CVE-2021-34558, CVE-2021-3609, CVE-2021-37576, CVE-2021-38201, CVE-2021-38575
SHA-256 | 3a62781802214e6eb77a0d28fc9fa05ebee3d12366b8219cccc000ace400db7e
Red Hat Security Advisory 2021-3447-01
Posted Sep 8, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-3447-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. Issues addressed include an out of bounds access vulnerability.

tags | advisory, kernel
systems | linux, redhat
advisories | CVE-2021-37576, CVE-2021-38201
SHA-256 | 21758e8d20602709b14092a3a74aa61609c2b08c0cdf3db47ba5c33f5c238629
Red Hat Security Advisory 2021-3440-01
Posted Sep 7, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-3440-01 - The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements. Issues addressed include an out of bounds access vulnerability.

tags | advisory, kernel
systems | linux, redhat
advisories | CVE-2021-38201
SHA-256 | fae235b4ccbe50e1ad6b6e53ea379ae4dba89eb999daacdc31c324c7824828a8
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