Ubuntu 20.04 LTS / 22.04 LTS : Linux kernel vulnerabilities (USN-6044-1)

The remote Ubuntu 20.04 LTS / 22.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-6044-1 advisory. It was discovered that the Traffic-Control Index TCINDEX implementation in the Linux kernel did not properly perform filter deactivation in...

Use-after-free in Linux kernel's io_uring subsystem

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The vulnerability of the io_file_get_fixed() function in the io_uring module of the Linux operating system allows a attacker to increase their privileges.

The vulnerability of the iofilegetfixed function in the iouring module of the Linux operating system’s kernel is related to the reutilization of previously freed memory. Exploiting this vulnerability can allow an attacker to increase their privileges...

Amazon Linux 2023 : bpftool, kernel, kernel-devel (ALAS2023-2023-160)

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2023-160 advisory. A flaw was found in the Linux kernel Traffic Control TC subsystem. Using a specific networking configuration redirecting egress packets to ingress using TC action mirred a local unprivileged us...

USN-6033-1: Linux kernel (OEM) vulnerabilities

It was discovered that the Traffic-Control Index TCINDEX implementation in the Linux kernel did not properly perform filter deactivation in some situations. A local attacker could possibly use this to gain elevated privileges. Please note that with the fix for this CVE, kernel support for the...

USN-6033-1 linux-oem-6.1 vulnerabilities

It was discovered that the Traffic-Control Index TCINDEX implementation in the Linux kernel did not properly perform filter deactivation in some situations. A local attacker could possibly use this to gain elevated privileges. Please note that with the fix for this CVE, kernel support for the...

USN-6024-1: Linux kernel vulnerabilities

It was discovered that the Traffic-Control Index TCINDEX implementation in the Linux kernel contained a use-after-free vulnerability. A local attacker could use this to cause a denial of service system crash or possibly execute arbitrary code. CVE-2023-1281 Lin Ma discovered a race condition in t...

Ubuntu 22.04 LTS : Linux kernel (OEM) vulnerabilities (USN-6033-1)

The remote Ubuntu 22.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-6033-1 advisory. It was discovered that the Traffic-Control Index TCINDEX implementation in the Linux kernel did not properly perform filter deactivation in some...

Medium: kernel

Issue Overview: An issue was discovered in fs/iouring.c in the Linux kernel through 5.11.8. It allows attackers to cause a denial of service deadlock because exit may be waiting to park a SQPOLL thread, but concurrently that SQPOLL thread is waiting for a signal to start, aka CID-3ebba796fa25...

SUSE CVE-2023-1872

A use-after-free vulnerability in the Linux Kernel iouring system can be exploited to achieve local privilege escalation. The iofilegetfixed function lacks the presence of ctx-uringlock which can lead to a Use-After-Free vulnerability due a race condition with fixed files getting unregistered. We...

CVE-2023-1872

A flaw was found in the iouring subsystem of the Linux kernel. The iofilegetfixed function lacks the presence of ctx-uringlock, which can lead to a use-after-free vulnerability due to a race condition with fixed files getting unregistered. This flaw allows local privilege escalation...

CVE-2023-1872

A use-after-free vulnerability in the Linux Kernel iouring system can be exploited to achieve local privilege escalation. The iofilegetfixed function lacks the presence of ctx-uringlock which can lead to a Use-After-Free vulnerability due a race condition with fixed files getting unregistered. We...

DEBIAN-CVE-2023-1872

A use-after-free vulnerability in the Linux Kernel iouring system can be exploited to achieve local privilege escalation. The iofilegetfixed function lacks the presence of ctx-uringlock which can lead to a Use-After-Free vulnerability due a race condition with fixed files getting unregistered. We...

AZL-26167 CVE-2023-1872 affecting package kernel for versions less than 5.15.111.1-1

A use-after-free vulnerability in the Linux Kernel iouring system can be exploited to achieve local privilege escalation. The iofilegetfixed function lacks the presence of ctx-uringlock which can lead to a Use-After-Free vulnerability due a race condition with fixed files getting unregistered. We...

CVE-2023-1872

A use-after-free vulnerability in the Linux Kernel iouring system can be exploited to achieve local privilege escalation. The iofilegetfixed function lacks the presence of ctx-uringlock which can lead to a Use-After-Free vulnerability due a race condition with fixed files getting unregistered. We...

Race condition

A use-after-free vulnerability in the Linux Kernel iouring system can be exploited to achieve local privilege escalation. The iofilegetfixed function lacks the presence of ctx-uringlock which can lead to a Use-After-Free vulnerability due a race condition with fixed files getting unregistered. We...

CVE-2023-1872

A use-after-free vulnerability in the Linux Kernel iouring system can be exploited to achieve local privilege escalation. The iofilegetfixed function lacks the presence of ctx-uringlock which can lead to a Use-After-Free vulnerability due a race condition with fixed files getting unregistered. We...

UBUNTU-CVE-2023-1872

A use-after-free vulnerability in the Linux Kernel iouring system can be exploited to achieve local privilege escalation. The iofilegetfixed function lacks the presence of ctx-uringlock which can lead to a Use-After-Free vulnerability due a race condition with fixed files getting unregistered. We...

CVE-2023-1872

A use-after-free vulnerability in the Linux Kernel iouring system can be exploited to achieve local privilege escalation. The iofilegetfixed function lacks the presence of ctx-uringlock which can lead to a Use-After-Free vulnerability due a race condition with fixed files getting unregistered. We...

CVE-2023-1872

CVE-2023-1872 is a use-after-free in the Linux kernel io_uring subsystem caused by the io_file_get_fixed path not validating ctx->uring_lock, enabling a race with fixed files unregistration. This can lead to local privilege escalation and possible denial of service. Affected component is the k...