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CVE-2021-22555

Status Candidate

Overview

A heap out-of-bounds write affecting Linux since v2.6.19-rc1 was discovered in net/netfilter/x_tables.c. This allows an attacker to gain privileges or cause a DoS (via heap memory corruption) through user name space

Related Files

Red Hat Security Advisory 2021-3181-01
Posted Aug 17, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-3181-01 - 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 bypass and out of bounds write vulnerabilities.

tags | advisory, kernel, vulnerability
systems | linux, redhat
advisories | CVE-2021-22543, CVE-2021-22555, CVE-2021-32399
SHA-256 | ebd81c13fdd75aa9a29ef494c70017048d00231cdf540dabb309fbc3d526a9f2
Ubuntu Security Notice USN-5039-1
Posted Aug 13, 2021
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5039-1 - Andy Nguyen discovered that the netfilter subsystem in the Linux kernel contained an out-of-bounds write in its setsockopt implementation. 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
systems | linux, ubuntu
advisories | CVE-2021-22555
SHA-256 | 7fb7691f058c261273fb09c55bc720d7577ebc45a011695b5a20326cb0708c5b
Red Hat Security Advisory 2021-3088-01
Posted Aug 10, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-3088-01 - The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements. Issues addressed include bypass, out of bounds write, and privilege escalation vulnerabilities.

tags | advisory, kernel, vulnerability
systems | linux, redhat
advisories | CVE-2021-22543, CVE-2021-22555, CVE-2021-3609
SHA-256 | 89b3cd704447ba81f0b1469b2f11523e90e8a2febc7bbe6eca778f311621ad18
Red Hat Security Advisory 2021-3057-01
Posted Aug 10, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-3057-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. Issues addressed include bypass, null pointer, out of bounds write, and privilege escalation vulnerabilities.

tags | advisory, kernel, vulnerability
systems | linux, redhat
advisories | CVE-2021-22543, CVE-2021-22555, CVE-2021-3609
SHA-256 | 430fd835d2bdf1ff571ff110fb4f55ba499c9de4d9b0f89a65b0be15a0229e02
Red Hat Security Advisory 2021-3044-01
Posted Aug 10, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-3044-01 - 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 bypass, out of bounds write, and privilege escalation vulnerabilities.

tags | advisory, kernel, vulnerability
systems | linux, redhat
advisories | CVE-2021-22543, CVE-2021-22555, CVE-2021-3609
SHA-256 | ae38cf4d315c5c9028eba6e515a52134f57ccd0722c43a727a4f79112a01520a
Linux Kernel Netfilter Heap Out-Of-Bounds Write
Posted Jul 16, 2021
Authored by Andy Nguyen

A heap out-of-bounds write affecting the Linux kernel since version 2.6.19-rc1 was discovered in net/netfilter/x_tables.c. This allows an attacker to gain privileges or cause a denial of service condition (via heap memory corruption) through user name space.

tags | exploit, denial of service, kernel
systems | linux
advisories | CVE-2021-22555
SHA-256 | 43ba43820c567d536530e6cefcfcebfdd790ebc48dc3c00634126ad08fb0dfbf
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