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CVE-2020-29661

Status Candidate

Overview

A locking issue was discovered in the tty subsystem of the Linux kernel through 5.9.13. drivers/tty/tty_jobctrl.c allows a use-after-free attack against TIOCSPGRP, aka CID-54ffccbf053b.

Related Files

Red Hat Security Advisory 2021-1288-01
Posted Apr 20, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-1288-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. Issues addressed include buffer overflow, denial of service, out of bounds read, and use-after-free vulnerabilities.

tags | advisory, denial of service, overflow, kernel, vulnerability
systems | linux, redhat
advisories | CVE-2020-29661, CVE-2021-20265, CVE-2021-27364, CVE-2021-27365
MD5 | 6602dc03aef32e6967a9fac4041d5606
Red Hat Security Advisory 2021-1031-01
Posted Mar 30, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-1031-01 - This is a kernel live patch module which is automatically loaded by the RPM post-install script to modify the code of a running kernel. Issues addressed include a use-after-free vulnerability.

tags | advisory, kernel
systems | linux, redhat
advisories | CVE-2020-29661
MD5 | c18725798b8082e7ed3966e8fd3b2915
Red Hat Security Advisory 2021-1028-01
Posted Mar 30, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-1028-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. Issues addressed include a use-after-free vulnerability.

tags | advisory, kernel
systems | linux, redhat
advisories | CVE-2020-14351, CVE-2020-29661
MD5 | 7a6a4232ecdfbb13deb06982fc3f361b
Red Hat Security Advisory 2021-0940-01
Posted Mar 19, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-0940-01 - This is a kernel live patch module which is automatically loaded by the RPM post-install script to modify the code of a running kernel. Issues addressed include a use-after-free vulnerability.

tags | advisory, kernel
systems | linux, redhat
advisories | CVE-2020-29661
MD5 | 30de3349d74bd541ec9d32a351738c2f
Red Hat Security Advisory 2021-0878-01
Posted Mar 17, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-0878-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. Issues addressed include a use-after-free vulnerability.

tags | advisory, kernel
systems | linux, redhat
advisories | CVE-2020-14351, CVE-2020-24394, CVE-2020-25212, CVE-2020-29661
MD5 | 22a8a3a7e897bddce2325e2cc75ccea6
Red Hat Security Advisory 2021-0857-01
Posted Mar 17, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-0857-01 - 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, out of bounds read, out of bounds write, and use-after-free vulnerabilities.

tags | advisory, denial of service, overflow, kernel, vulnerability
systems | linux, redhat
advisories | CVE-2019-19532, CVE-2020-0427, CVE-2020-14351, CVE-2020-25211, CVE-2020-25645, CVE-2020-25656, CVE-2020-25705, CVE-2020-28374, CVE-2020-29661, CVE-2020-7053, CVE-2021-20265
MD5 | ed7f6bef5c4213e5f5612e2c232e5421
Red Hat Security Advisory 2021-0856-01
Posted Mar 17, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-0856-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. Issues addressed include buffer overflow, denial of service, out of bounds read, out of bounds write, and use-after-free vulnerabilities.

tags | advisory, denial of service, overflow, kernel, vulnerability
systems | linux, redhat
advisories | CVE-2019-19532, CVE-2020-0427, CVE-2020-14351, CVE-2020-25211, CVE-2020-25645, CVE-2020-25656, CVE-2020-25705, CVE-2020-28374, CVE-2020-29661, CVE-2020-7053, CVE-2021-20265
MD5 | 2554171046efcea8b32cea04230a9274
Red Hat Security Advisory 2021-0862-01
Posted Mar 17, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-0862-01 - This is a kernel live patch module which is automatically loaded by the RPM post-install script to modify the code of a running kernel. Issues addressed include a use-after-free vulnerability.

tags | advisory, kernel
systems | linux, redhat
advisories | CVE-2020-28374, CVE-2020-29661
MD5 | 8dbd395d02b618c45be467dde2cded95
Red Hat Security Advisory 2021-0765-01
Posted Mar 9, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-0765-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. Issues addressed include buffer overflow and use-after-free vulnerabilities.

tags | advisory, overflow, kernel, vulnerability
systems | linux, redhat
advisories | CVE-2020-0444, CVE-2020-14351, CVE-2020-25211, CVE-2020-25705, CVE-2020-29661
MD5 | 88665fa6046fc4f4f643c1c6e8669393
Red Hat Security Advisory 2021-0774-01
Posted Mar 9, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-0774-01 - 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 and use-after-free vulnerabilities.

tags | advisory, overflow, kernel, vulnerability
systems | linux, redhat
advisories | CVE-2020-0444, CVE-2020-14351, CVE-2020-25211, CVE-2020-25705, CVE-2020-29661
MD5 | 025aec37b80e7099fb4f174ea60a2ae0
Red Hat Security Advisory 2021-0763-01
Posted Mar 9, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-0763-01 - This is a kernel live patch module which is automatically loaded by the RPM post-install script to modify the code of a running kernel. Issues addressed include buffer overflow and use-after-free vulnerabilities.

tags | advisory, overflow, kernel, vulnerability
systems | linux, redhat
advisories | CVE-2020-0444, CVE-2020-25211, CVE-2020-29661
MD5 | 42e820cc579d09bc87a51c535a03497b
Red Hat Security Advisory 2021-0719-01
Posted Mar 4, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-0719-01 - Red Hat Advanced Cluster Management for Kubernetes 2.0.8 images. Red Hat Advanced Cluster Management for Kubernetes provides the capabilities to address common challenges that administrators and site reliability engineers face as they work across a range of public and private cloud environments. Clusters and applications are all visible and managed from a single console—with security policy built in. This advisory contains the container images for Red Hat Advanced Cluster Management for Kubernetes, which resolve some security issues and bugs.

tags | advisory
systems | linux, redhat
advisories | CVE-2020-10543, CVE-2020-10878, CVE-2020-12723, CVE-2020-14351, CVE-2020-15436, CVE-2020-25705, CVE-2020-29661, CVE-2020-35513, CVE-2021-20230, CVE-2021-3121
MD5 | 710e5973820f10de3dd34c4ac2b87276
Red Hat Security Advisory 2021-0686-01
Posted Mar 2, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-0686-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. Issues addressed include a use-after-free vulnerability.

tags | advisory, kernel
systems | linux, redhat
advisories | CVE-2020-0444, CVE-2020-14351, CVE-2020-25705, CVE-2020-29661
MD5 | 39d6802993abe938930544f16912e7dc
Red Hat Security Advisory 2021-0689-01
Posted Mar 2, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-0689-01 - This is a kernel live patch module which is automatically loaded by the RPM post-install script to modify the code of a running kernel. Issues addressed include a use-after-free vulnerability.

tags | advisory, kernel
systems | linux, redhat
advisories | CVE-2020-0444, CVE-2020-29661
MD5 | 4945818ac12248278aae01aed5b909f3
Ubuntu Security Notice USN-4752-1
Posted Feb 25, 2021
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4752-1 - Daniele Antonioli, Nils Ole Tippenhauer, and Kasper Rasmussen discovered that legacy pairing and secure-connections pairing authentication in the Bluetooth protocol could allow an unauthenticated user to complete authentication without pairing credentials via adjacent access. A physically proximate attacker could use this to impersonate a previously paired Bluetooth device. Jay Shin discovered that the ext4 file system implementation in the Linux kernel did not properly handle directory access with broken indexing, leading to an out-of-bounds read vulnerability. A local attacker could use this to cause a denial of service. Various other issues were also addressed.

tags | advisory, denial of service, kernel, local, protocol
systems | linux, ubuntu
advisories | CVE-2020-10135, CVE-2020-14314, CVE-2020-15436, CVE-2020-15437, CVE-2020-24490, CVE-2020-25212, CVE-2020-25284, CVE-2020-25641, CVE-2020-25643, CVE-2020-25704, CVE-2020-27152, CVE-2020-27815, CVE-2020-28588, CVE-2020-28915, CVE-2020-29368, CVE-2020-29369, CVE-2020-29371, CVE-2020-29660, CVE-2020-29661, CVE-2020-35508
MD5 | 9add7841f0ccf8f64e1da83e75e06c64
Ubuntu Security Notice USN-4751-1
Posted Feb 25, 2021
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4751-1 - It was discovered that the console keyboard driver in the Linux kernel contained a race condition. A local attacker could use this to expose sensitive information. Minh Yuan discovered that the tty driver in the Linux kernel contained race conditions when handling fonts. A local attacker could possibly use this to expose sensitive information. Bodong Zhao discovered a use-after-free in the Sun keyboard driver implementation in the Linux kernel. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. Various other issues were also addressed.

tags | advisory, denial of service, arbitrary, kernel, local
systems | linux, ubuntu
advisories | CVE-2020-25656, CVE-2020-25668, CVE-2020-25669, CVE-2020-25704, CVE-2020-27673, CVE-2020-27675, CVE-2020-27777, CVE-2020-27815, CVE-2020-27830, CVE-2020-27835, CVE-2020-28588, CVE-2020-28974, CVE-2020-29568, CVE-2020-29569, CVE-2020-29660, CVE-2020-29661, CVE-2020-35508
MD5 | 7bb32fb3e62f03bec71b2c606776cd36
Ubuntu Security Notice USN-4750-1
Posted Feb 25, 2021
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4750-1 - Bodong Zhao discovered a use-after-free in the Sun keyboard driver implementation in the Linux kernel. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. It was discovered that the jfs file system implementation in the Linux kernel contained an out-of-bounds read vulnerability. A local attacker could use this to possibly cause a denial of service. Various other issues were also addressed.

tags | advisory, denial of service, arbitrary, kernel, local
systems | linux, ubuntu
advisories | CVE-2020-25669, CVE-2020-27815, CVE-2020-28588, CVE-2020-28941, CVE-2020-29568, CVE-2020-29569, CVE-2020-29660, CVE-2020-29661, CVE-2021-20177
MD5 | c85137173facaaae05662060f5c26ad1
Ubuntu Security Notice USN-4749-1
Posted Feb 25, 2021
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4749-1 - Bodong Zhao discovered a use-after-free in the Sun keyboard driver implementation in the Linux kernel. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. It was discovered that the jfs file system implementation in the Linux kernel contained an out-of-bounds read vulnerability. A local attacker could use this to possibly cause a denial of service. Various other issues were also addressed.

tags | advisory, denial of service, arbitrary, kernel, local
systems | linux, ubuntu
advisories | CVE-2020-25669, CVE-2020-27815, CVE-2020-29374, CVE-2020-29568, CVE-2020-29569, CVE-2020-29660, CVE-2020-29661
MD5 | e814a088294feb0a838a75b2880951cd
Ubuntu Security Notice USN-4748-1
Posted Feb 25, 2021
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4748-1 - It was discovered that the jfs file system implementation in the Linux kernel contained an out-of-bounds read vulnerability. A local attacker could use this to possibly cause a denial of service. It was discovered that the memory management subsystem in the Linux kernel did not properly handle copy-on-write operations in some situations. A local attacker could possibly use this to gain unintended write access to read-only memory pages. Various other issues were also addressed.

tags | advisory, denial of service, kernel, local
systems | linux, ubuntu
advisories | CVE-2020-27815, CVE-2020-29374, CVE-2020-29568, CVE-2020-29660, CVE-2020-29661
MD5 | 89dfc2cac6b4f51b038cdb39707b3c65
Red Hat Security Advisory 2021-0558-01
Posted Feb 16, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-0558-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. Issues addressed include a use-after-free vulnerability.

tags | advisory, kernel
systems | linux, redhat
advisories | CVE-2020-14351, CVE-2020-25705, CVE-2020-29661
MD5 | 29e5b5f5ad89979710c939d3bf99443e
Red Hat Security Advisory 2021-0537-01
Posted Feb 16, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-0537-01 - The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements. Issues addressed include a use-after-free vulnerability.

tags | advisory, kernel
systems | linux, redhat
advisories | CVE-2020-14351, CVE-2020-25705, CVE-2020-29661
MD5 | 63a8c1a37737b69aac454d643e34f00d
Red Hat Security Advisory 2021-0354-01
Posted Feb 2, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-0354-01 - The kernel-alt packages provide the Linux kernel version 4.x. Issues addressed include a use-after-free vulnerability.

tags | advisory, kernel
systems | linux, redhat
advisories | CVE-2020-15436, CVE-2020-1749, CVE-2020-29661
MD5 | b37b38356982e78ff86c720ade552d87
Linux TIOCSPGRP Broken Locking
Posted Dec 22, 2020
Authored by Jann Horn, Google Security Research

Linux suffers from broken locking in TIOCSPGRP that can lead to a corrupted refcount.

tags | exploit
systems | linux
advisories | CVE-2020-29661
MD5 | d37fdf0d783b8893341574d9756e44cb
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