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CVE-2020-11565

Status Candidate

Overview

** DISPUTED ** An issue was discovered in the Linux kernel through 5.6.2. mpol_parse_str in mm/mempolicy.c has a stack-based out-of-bounds write because an empty nodelist is mishandled during mount option parsing, aka CID-aa9f7d5172fa. NOTE: Someone in the security community disagrees that this is a vulnerability because the issue “is a bug in parsing mount options which can only be specified by a privileged user, so triggering the bug does not grant any powers not already held.”.

Related Files

Red Hat Security Advisory 2020-2854-01
Posted Jul 7, 2020
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2020-2854-01 - The kernel-alt packages provide the Linux kernel version 4.x. Issues addressed include denial of service, memory leak, out of bounds write, privilege escalation, and use-after-free vulnerabilities.

tags | advisory, denial of service, kernel, vulnerability, memory leak
systems | linux, redhat
advisories | CVE-2018-16884, CVE-2019-11811, CVE-2019-15917, CVE-2019-18808, CVE-2019-19062, CVE-2019-19767, CVE-2019-20636, CVE-2019-9458, CVE-2020-10720, CVE-2020-11565, CVE-2020-12888, CVE-2020-8834
SHA-256 | 88b10b591e7d9aa17f5a3f9a69794ba0c6e72031e7fea8f23b71c9502215f507
Ubuntu Security Notice USN-4367-2
Posted May 29, 2020
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4367-2 - USN-4367-1 fixed vulnerabilities in the 5.4 Linux kernel. Unfortunately, that update introduced a regression in overlayfs. This update corrects the problem. It was discovered that the btrfs implementation in the Linux kernel did not properly detect that a block was marked dirty in some situations. An attacker could use this to specially craft a file system image that, when unmounted, could cause a denial of service. Various other issues were also addressed.

tags | advisory, denial of service, kernel, vulnerability
systems | linux, ubuntu
advisories | CVE-2019-19377, CVE-2020-11565, CVE-2020-12657
SHA-256 | 5e42002b4d2ecabf6a6cfa168d989279420dab6dbea6fcbbc0c07e9f5d7946b9
Ubuntu Security Notice USN-4369-2
Posted May 29, 2020
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4369-2 - USN-4369-1 fixed vulnerabilities in the 5.3 Linux kernel. Unfortunately, that update introduced a regression in overlayfs. This update corrects the problem. It was discovered that the btrfs implementation in the Linux kernel did not properly detect that a block was marked dirty in some situations. An attacker could use this to specially craft a file system image that, when unmounted, could cause a denial of service. Various other issues were also addressed.

tags | advisory, denial of service, kernel, vulnerability
systems | linux, ubuntu
advisories | CVE-2019-19377, CVE-2019-19769, CVE-2020-11494, CVE-2020-11565, CVE-2020-11608, CVE-2020-11609, CVE-2020-11668, CVE-2020-12657
SHA-256 | f8da9cd441c6d1901bb239518cb0e0af3d90d2be5c17ffa81da275fed60bf480
Ubuntu Security Notice USN-4369-1
Posted May 21, 2020
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4369-1 - It was discovered that the btrfs implementation in the Linux kernel did not properly detect that a block was marked dirty in some situations. An attacker could use this to specially craft a file system image that, when unmounted, could cause a denial of service. Tristan Madani discovered that the file locking implementation in the Linux kernel contained a race condition. A local attacker could possibly use this to cause a denial of service or expose sensitive information. Various other issues were also addressed.

tags | advisory, denial of service, kernel, local
systems | linux, ubuntu
advisories | CVE-2019-19377, CVE-2019-19769, CVE-2020-11494, CVE-2020-11565, CVE-2020-11608, CVE-2020-11609, CVE-2020-11668, CVE-2020-12657
SHA-256 | 69def9b45df53fc4cdb7a3a8ed24f560a00649c84605fd7f555c6571945e7f41
Ubuntu Security Notice USN-4367-1
Posted May 20, 2020
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4367-1 - It was discovered that the btrfs implementation in the Linux kernel did not properly detect that a block was marked dirty in some situations. An attacker could use this to specially craft a file system image that, when unmounted, could cause a denial of service. It was discovered that the linux kernel did not properly validate certain mount options to the tmpfs virtual memory file system. A local attacker with the ability to specify mount options could use this to cause a denial of service. Various other issues were also addressed.

tags | advisory, denial of service, kernel, local
systems | linux, ubuntu
advisories | CVE-2019-19377, CVE-2020-11565, CVE-2020-12657
SHA-256 | 321685a1adbdcccf734ad851c77e79c05483bf554e2914c4f09a4d1df26c8252
Ubuntu Security Notice USN-4368-1
Posted May 20, 2020
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4368-1 - Tristan Madani discovered that the file locking implementation in the Linux kernel contained a race condition. A local attacker could possibly use this to cause a denial of service or expose sensitive information. It was discovered that the Serial CAN interface driver in the Linux kernel did not properly initialize data. A local attacker could use this to expose sensitive information. Various other issues were also addressed.

tags | advisory, denial of service, kernel, local
systems | linux, ubuntu
advisories | CVE-2019-19769, CVE-2020-11494, CVE-2020-11565, CVE-2020-11608, CVE-2020-11609, CVE-2020-11668, CVE-2020-11669, CVE-2020-12657
SHA-256 | e6d9dc36e87b107c541d9e200b7670120dd2a6f0e812c4b8530369abbb224c18
Ubuntu Security Notice USN-4364-1
Posted May 19, 2020
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4364-1 - It was discovered that the ADIS16400 IIO IMU Driver for the Linux kernel did not properly deallocate memory in certain error conditions. A local attacker could use this to cause a denial of service. It was discovered that the vhost net driver in the Linux kernel contained a stack buffer overflow. A local attacker with the ability to perform ioctl calls on /dev/vhost-net could use this to cause a denial of service. Various other issues were also addressed.

tags | advisory, denial of service, overflow, kernel, local
systems | linux, ubuntu
advisories | CVE-2019-19060, CVE-2020-10942, CVE-2020-11494, CVE-2020-11565, CVE-2020-11608, CVE-2020-11609, CVE-2020-11668
SHA-256 | 40abb3bdec0492cc28e800a42deaff41cbd35c03d6fe95eb0708a885d2822236
Ubuntu Security Notice USN-4363-1
Posted May 18, 2020
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4363-1 - It was discovered that the Serial CAN interface driver in the Linux kernel did not properly initialize data. A local attacker could use this to expose sensitive information. It was discovered that the linux kernel did not properly validate certain mount options to the tmpfs virtual memory file system. A local attacker with the ability to specify mount options could use this to cause a denial of service. Various other issues were also addressed.

tags | advisory, denial of service, kernel, local
systems | linux, ubuntu
advisories | CVE-2020-11494, CVE-2020-11565, CVE-2020-11669, CVE-2020-12657
SHA-256 | fc9d288e93a1b9486a209f1f2b9d7e23d7cc984cfe2772b67824c80a4ad02276
Debian Security Advisory 4667-1
Posted Apr 28, 2020
Authored by Debian | Site debian.org

Debian Linux Security Advisory 4667-1 - Several vulnerabilities have been discovered in the Linux kernel that may lead to a privilege escalation, denial of service, or information leak.

tags | advisory, denial of service, kernel, vulnerability
systems | linux, debian
advisories | CVE-2020-10942, CVE-2020-11565, CVE-2020-11884, CVE-2020-2732, CVE-2020-8428
SHA-256 | 16323d64ec34cdde8160250d74f386fe52de579ba9ed063c3eb7063b6b8aa960
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