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CVE-2020-25285

Status Candidate

Overview

A race condition between hugetlb sysctl handlers in mm/hugetlb.c in the Linux kernel before 5.8.8 could be used by local attackers to corrupt memory, cause a NULL pointer dereference, or possibly have unspecified other impact, aka CID-17743798d812.

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-4912-1
Posted Apr 13, 2021
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4912-1 - Piotr Krysiuk discovered that the BPF JIT compiler for x86 in the Linux kernel did not properly validate computation of branch displacements in some situations. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. 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, x86, kernel, local
systems | linux, ubuntu
advisories | CVE-2020-0423, CVE-2020-0465, CVE-2020-0466, CVE-2020-14351, CVE-2020-14390, CVE-2020-25285, CVE-2020-25645, CVE-2020-25669, CVE-2020-27830, CVE-2020-36158, CVE-2021-20194, CVE-2021-29154, CVE-2021-3178, CVE-2021-3411
MD5 | 1bded3d10c58ff192a0d70e344750ce6
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-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-4579-1
Posted Oct 14, 2020
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4579-1 - Hador Manor discovered that the DCCP protocol implementation in the Linux kernel improperly handled socket reuse, leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. Wen Xu discovered that the XFS file system in the Linux kernel did not properly validate inode metadata in some situations. An attacker could use this to construct a malicious XFS image that, when mounted, could cause a denial of service. Various other issues were also addressed.

tags | advisory, denial of service, arbitrary, kernel, local, protocol
systems | linux, ubuntu
advisories | CVE-2018-10322, CVE-2020-14314, CVE-2020-16119, CVE-2020-25285
MD5 | add5a165267e2db5c97379f45065737e
Ubuntu Security Notice USN-4576-1
Posted Oct 14, 2020
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4576-1 - Hador Manor discovered that the DCCP protocol implementation in the Linux kernel improperly handled socket reuse, leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. 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, arbitrary, kernel, local, protocol
systems | linux, ubuntu
advisories | CVE-2020-14314, CVE-2020-14385, CVE-2020-16119, CVE-2020-16120, CVE-2020-25285, CVE-2020-25641
MD5 | 73dae97a670b565b41f5e2687d970fc6
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