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CVE-2020-25643

Status Candidate

Overview

A flaw was found in the HDLC_PPP module of the Linux kernel in versions before 5.9-rc7. Memory corruption and a read overflow is caused by improper input validation in the ppp_cp_parse_cr function which can cause the system to crash or cause a denial of service. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

Related Files

Red Hat Security Advisory 2021-1739-01
Posted May 19, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-1739-01 - The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements. Issues addressed include denial of service, integer overflow, null pointer, 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-2019-19523, CVE-2019-19528, CVE-2020-0431, CVE-2020-11608, CVE-2020-12114, CVE-2020-12362, CVE-2020-12464, CVE-2020-14314, CVE-2020-14356, CVE-2020-15437, CVE-2020-24394, CVE-2020-25212, CVE-2020-25284, CVE-2020-25285, CVE-2020-25643, CVE-2020-25704, CVE-2020-27786, CVE-2020-27835, CVE-2020-28974, CVE-2020-35508, CVE-2021-0342
MD5 | 67916a0c286ccb5643707ef3b94936c8
Red Hat Security Advisory 2021-1578-01
Posted May 19, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-1578-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. Issues addressed include denial of service, integer overflow, memory leak, null pointer, out of bounds read, out of bounds write, and use-after-free vulnerabilities.

tags | advisory, denial of service, overflow, kernel, vulnerability, memory leak
systems | linux, redhat
advisories | CVE-2019-18811, CVE-2019-19523, CVE-2019-19528, CVE-2020-0431, CVE-2020-11608, CVE-2020-12114, CVE-2020-12362, CVE-2020-12464, CVE-2020-14314, CVE-2020-14356, CVE-2020-15437, CVE-2020-24394, CVE-2020-25212, CVE-2020-25284, CVE-2020-25285, CVE-2020-25643, CVE-2020-25704, CVE-2020-27786, CVE-2020-27835, CVE-2020-28974, CVE-2020-35508, CVE-2020-36322, CVE-2021-0342
MD5 | 9810bc1d153239b2121473e6aba95b08
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
Red Hat Security Advisory 2020-5437-01
Posted Dec 15, 2020
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2020-5437-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. Issues addressed include buffer over-read and null pointer vulnerabilities.

tags | advisory, kernel, vulnerability
systems | linux, redhat
advisories | CVE-2019-18282, CVE-2020-10769, CVE-2020-14314, CVE-2020-14385, CVE-2020-24394, CVE-2020-25212, CVE-2020-25643
MD5 | a9adb00fdf3060ebc8ad1db7ead3643d
Red Hat Security Advisory 2020-5441-01
Posted Dec 15, 2020
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2020-5441-01 - 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 buffer over-read vulnerability.

tags | advisory, kernel
systems | linux, redhat
advisories | CVE-2019-18282, CVE-2020-10769, CVE-2020-14314, CVE-2020-14385, CVE-2020-24394, CVE-2020-25212, CVE-2020-25643
MD5 | 1fa9786d8c7f010130f92053363a7d32
Ubuntu Security Notice USN-4660-2
Posted Dec 14, 2020
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4660-2 - USN-4660-1 fixed vulnerabilities in the Linux kernel. Unfortunately, that update introduced a regression in the software raid10 driver when used with fstrim that could lead to data corruption. This update fixes the problem. It was discovered that a race condition existed in the perf subsystem of the Linux kernel, leading to a use-after-free vulnerability. An attacker with access to the perf subsystem 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, vulnerability
systems | linux, ubuntu
advisories | CVE-2020-14351, CVE-2020-14390, CVE-2020-25211, CVE-2020-25284, CVE-2020-25285, CVE-2020-25641, CVE-2020-25643, CVE-2020-25645, CVE-2020-28915, CVE-2020-4788
MD5 | 13b59c23735c20b99a07f2be7c796f7e
Ubuntu Security Notice USN-4658-2
Posted Dec 14, 2020
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4658-2 - USN-4658-1 fixed vulnerabilities in the Linux kernel. Unfortunately, that update introduced a regression in the software raid10 driver when used with fstrim that could lead to data corruption. This update fixes the problem. It was discovered that a race condition existed in the binder IPC implementation in the Linux kernel, leading to a use-after-free vulnerability. 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, vulnerability
systems | linux, ubuntu
advisories | CVE-2020-0423, CVE-2020-10135, CVE-2020-14351, CVE-2020-14390, CVE-2020-25211, CVE-2020-25284, CVE-2020-25643, CVE-2020-25645, CVE-2020-25705, CVE-2020-28915, CVE-2020-4788
MD5 | 66bcfd82be0047a6e48a5c99b2d2bdac
Ubuntu Security Notice USN-4660-1
Posted Dec 3, 2020
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4660-1 - It was discovered that a race condition existed in the perf subsystem of the Linux kernel, leading to a use-after-free vulnerability. An attacker with access to the perf subsystem could use this to cause a denial of service or possibly execute arbitrary code. It was discovered that the frame buffer implementation in the Linux kernel did not properly handle some edge cases in software scrollback. 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-2020-14351, CVE-2020-14390, CVE-2020-25211, CVE-2020-25284, CVE-2020-25285, CVE-2020-25641, CVE-2020-25643, CVE-2020-25645, CVE-2020-28915, CVE-2020-4788
MD5 | ee3119babe4a4a73b8652559a6df5f65
Ubuntu Security Notice USN-4658-1
Posted Dec 2, 2020
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4658-1 - It was discovered that a race condition existed in the binder IPC implementation in the Linux kernel, leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. 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. Various other issues were also addressed.

tags | advisory, denial of service, arbitrary, kernel, local, protocol
systems | linux, ubuntu
advisories | CVE-2020-0423, CVE-2020-10135, CVE-2020-14351, CVE-2020-14390, CVE-2020-25211, CVE-2020-25284, CVE-2020-25643, CVE-2020-25645, CVE-2020-25705, CVE-2020-28915, CVE-2020-4788
MD5 | 172e17181d7ddc7028474879ff713778
Ubuntu Security Notice USN-4657-1
Posted Dec 2, 2020
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4657-1 - Elena Petrova discovered that the pin controller device tree implementation in the Linux kernel did not properly handle string references. A local attacker could use this to expose sensitive information. 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. Various other issues were also addressed.

tags | advisory, kernel, local, protocol
systems | linux, ubuntu
advisories | CVE-2020-0427, CVE-2020-10135, CVE-2020-12352, CVE-2020-14351, CVE-2020-14390, CVE-2020-25211, CVE-2020-25284, CVE-2020-25643, CVE-2020-25645, CVE-2020-25705, CVE-2020-28915, CVE-2020-4788
MD5 | 3aefcd5c22a1c13bbe2b3f9912ac8531
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