kernel: Use After Free in unix_gc() which could result in a local privilege escalation

A vulnerability was found in unixdgramrecvmsg in net/unix/afunix.c in the Linux kernel's garbage collection for Unix domain socket file handlers. In this flaw, a missing cleanup may lead to a use-after-free due to a race problem. This flaw allows a local user to crash the system or escalate their...

USN-5295-1 linux-hwe-5.13 vulnerabilities

It was discovered that the Packet network protocol implementation in the Linux kernel contained a double-free vulnerability. A local attacker could use this to cause a denial of service system crash or possibly execute arbitrary code. CVE-2021-22600 Jann Horn discovered a race condition in the Un...

A read-after-free memory flaw was found in the Linux kernel's garbage collection for Unix domain socket file handlers in the way users call close() and fget() simultaneously and can potentially trigger a race condition. This flaw allows a local user to crash the system or escalate their privileges on the system. This flaw affects Linux kernel versions prior to 5.16-rc4.

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CVE-2021-4083

A read-after-free memory flaw was found in the Linux kernel's garbage collection for Unix domain socket file handlers in the way users call close and fget simultaneously and can potentially trigger a race condition. This flaw allows a local user to crash the system or escalate their privileges on...

UBUNTU-CVE-2021-4083

A read-after-free memory flaw was found in the Linux kernel's garbage collection for Unix domain socket file handlers in the way users call close and fget simultaneously and can potentially trigger a race condition. This flaw allows a local user to crash the system or escalate their privileges on...

PT-2021-1523 · Linux +11 · Linux Kernel +11

Name of the Vulnerable Software and Affected Versions: Linux kernel versions prior to 5.16-rc4 Description: A read-after-free memory flaw was found in the Linux kernel's garbage collection for Unix domain socket file handlers. This issue occurs when users call close and fget simultaneously,...

CLSA-2021-1632262296 Fix of CVE: CVE-2021-38160, CVE-2021-3573, CVE-2021-38205, CVE-2021-3178, CVE-2021-20265, CVE-2021-3612, CVE-2021-32399, CVE-2021-37159, CVE-2014-4508, CVE-2021-28972, CVE-2021-34693, CVE-2021-20292

ELSCVE-666: CVE-2021-34693: can: bcm: fix infoleak in struct bcmmsghead - ELSCVE-705: CVE-2021-38160: virtioconsole: Assure used length from device is limited - ELSCVE-769: CVE-2014-4508: x8632, entry: Do syscall exit work on badsys CVE-2014-4508 - ELSCVE-844: CVE-2021-3573: Bluetooth: use...

Virtuozzo ReadyKernel patch 124.1 for Virtuozzo Hybrid Server 7.0, 7.5, Virtuozzo Infrastructure Platform 3.0, and Virtuozzo Hybrid Infrastructure 3.5, 4.0

This update fixes an issue in the ReadyKernel patch v124.0 PSBM-127243. After the release of that version, it was found that it refused to load on certain customer nodes if UNIX domain sockets were used there to pass large amounts of data between processes. This was because the fix for...

GaussDB Kernel: Configuring the Permission to Access UNIX Domain Sockets

unixsocketpermissions specifies the permission to access UNIX domain sockets. The default value of this parameter is 0777, indicating that all users can access UNIX domain sockets. You are advised to set this parameter to 0770 indicating that only users and groups can access UNIX domain sockets o...

Red Hat libvirt Elevation of Privilege Vulnerability

Red Hat libvirt is a Linux API for implementing Linux virtualization features from Red Hat, Inc. It supports a variety of Hypervisors, including Xen and KVM, as well as QEMU and a number of virtual products for other operating systems. A security vulnerability exists in Red Hat libvirt that stems...

Linux 5.3 Insecure Root Path Handling Exploit

Linux versions 5.3 and above appear to have an issue where iouring suffers from insecure handling of the root directory for path lookups. Linux =5.3: iouring: insecure handling of root directory for path lookups When I saw today, I realized that this is not just a small correctness issue, but als...

Linux: rsyslog status

Rsyslogd is a system utility providing support for message logging. Support of both internet and unix domain sockets enables this utility to support both local and remote logging. SPDX-FileCopyrightText: 2020 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and ar...

FreeBSD-SA-19:17.fd

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 ============================================================================= FreeBSD-SA-19:17.fd Security Advisory The FreeBSD Project Topic: File description reference count leak Category: core Module: unix Announced: 2019-07-24 Credits: Mark...

systemd - DynamicUser can Create setuid Binaries when Assisted by Another Process

systemd - DynamicUser can Create setuid Binaries when Assisted by Another Process This bug report describes a bug in systemd that allows a service with DynamicUser in collaboration with another service or user to create a setuid binary that can be used to access its UID beyond the lifetime of the...

CVE-2019-5596

In FreeBSD 11.2-STABLE after r338618 and before r343786, 12.0-STABLE before r343781, and 12.0-RELEASE before 12.0-RELEASE-p3, a bug in the reference count implementation for UNIX domain sockets can cause a file structure to be incorrectly released potentially allowing a malicious local user to ga...

Code injection

In FreeBSD 11.2-STABLE after r338618 and before r343786, 12.0-STABLE before r343781, and 12.0-RELEASE before 12.0-RELEASE-p3, a bug in the reference count implementation for UNIX domain sockets can cause a file structure to be incorrectly released potentially allowing a malicious local user to ga...

CVE-2019-5596

Removed by vendor...

CVE-2019-5596

CVE-2019-5596 affects FreeBSD 11.2-STABLE after r338618 and before r343786, and 12.0-STABLE before r343781 and 12.0-RELEASE before 12.0-RELEASE-p3. Description: a bug in the reference count handling for UNIX-domain sockets can cause the kernel to incorrectly release a file structure, enabling a l...

CVE-2019-5596: Undefined Security Weakness

In FreeBSD 11.2-STABLE after r338618 and before r343786, 12.0-STABLE before r343781, and 12.0-RELEASE before 12.0-RELEASE-p3, a bug in the reference count implementation for UNIX domain sockets can cause a file structure to be incorrectly released potentially allowing a malicious local user to ga...

FreeBSD-SA-19:02.fd

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 ============================================================================= FreeBSD-SA-19:02.fd Security Advisory The FreeBSD Project Topic: File description reference count leak Category: core Module: unix Announced: 2019-02-05 Credits: Peter Hol...