USN-4678-1: Linux kernel vulnerabilities

It was discovered that the AMD Running Average Power Limit RAPL driver in the Linux kernel did not properly restrict access to power data. A local attacker could possibly use this to expose sensitive information. CVE-2020-12912 Jann Horn discovered that the iouring subsystem in the Linux kernel d...

Ubuntu 20.04 LTS : Linux kernel vulnerabilities (USN-4678-1)

The remote Ubuntu 20.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-4678-1 advisory. It was discovered that the AMD Running Average Power Limit RAPL driver in the Linux kernel did not properly restrict access to power data. A local attack...

Linux Kernel io_uring Use-After-Free Privilege Escalation Vulnerability

This vulnerability allows local attackers to escalate privileges on affected installations of Linux Kernel. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. The specific flaw exists within the handling of file...

PT-2021-7639 · Linux +1 · Linux Kernel +1

Name of the Vulnerable Software and Affected Versions: Linux kernel versions prior to 5.10.161 Description: The issue is related to a logic error in the io uring implementation, which can trigger a use-after-free vulnerability leading to privilege escalation. In the io prep async work function, t...

CVE-2020-29534

An issue was discovered in the Linux kernel before 5.9.3. iouring takes a non-refcounted reference to the filesstruct of the process that submitted a request, causing execve to incorrectly optimize unsharefd, aka CID-0f2122045b94...

An issue was discovered in the Linux kernel before 5.9.3. io_uring takes a non-refcounted reference to the files_struct of the process that submitted a request causing execve() to incorrectly optimize unshare_fd() aka CID-0f2122045b94.

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Unspecified vulnerability in Linux kernel (CNVD-2021-09807)

Linux kernel is the kernel used by Linux, the open source operating system of the Linux Foundation in the United States. A security vulnerability exists in versions of Linux kernel prior to 5.9.3 that stems from iouring accepting an unreferenced reference to the file structure of the process...

CVE-2020-29534

An issue was discovered in the Linux kernel before 5.9.3. iouring takes a non-refcounted reference to the filesstruct of the process that submitted a request, causing execve to incorrectly optimize unsharefd, aka CID-0f2122045b94...

DEBIAN-CVE-2020-29534

An issue was discovered in the Linux kernel before 5.9.3. iouring takes a non-refcounted reference to the filesstruct of the process that submitted a request, causing execve to incorrectly optimize unsharefd, aka CID-0f2122045b94...

CVE-2020-29534

An issue was discovered in the Linux kernel before 5.9.3. iouring takes a non-refcounted reference to the filesstruct of the process that submitted a request, causing execve to incorrectly optimize unsharefd, aka CID-0f2122045b94...

UBUNTU-CVE-2020-29534

An issue was discovered in the Linux kernel before 5.9.3. iouring takes a non-refcounted reference to the filesstruct of the process that submitted a request, causing execve to incorrectly optimize unsharefd, aka CID-0f2122045b94...

Cross site request forgery (csrf)

An issue was discovered in the Linux kernel before 5.9.3. iouring takes a non-refcounted reference to the filesstruct of the process that submitted a request, causing execve to incorrectly optimize unsharefd, aka CID-0f2122045b94...

CVE-2020-29534

CVE-2020-29534 affects the Linux kernel prior to 5.9.3. The io_uring subsystem takes a non-refcounted reference to the submitting process’ files_struct, which can lead to incorrect optimization of unshare_fd() during execve(), as CID-0f2122045b94 describes. This is a local vulnerability with pote...

An issue was discovered in fs/io_uring.c in the Linux kernel before 5.6. It unsafely handles the root directory during path lookups and thus a process inside a mount namespace can escape to unintended filesystem locations aka CID-ff002b30181d.

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Linux kernel 安全漏洞

Linux kernel is the kernel used by Linux, the open source operating system of the Linux Foundation in the United States. A security vulnerability exists in versions of Linux kernel prior to 5.9.3 that stems from iouring accepting an unreferenced reference to the file structure of the process...

DEBIAN-CVE-2020-29373

An issue was discovered in fs/iouring.c in the Linux kernel before 5.6. It unsafely handles the root directory during path lookups, and thus a process inside a mount namespace can escape to unintended filesystem locations, aka CID-ff002b30181d...

DEBIAN-CVE-2020-29372

An issue was discovered in domadvise in mm/madvise.c in the Linux kernel before 5.6.8. There is a race condition between coredump operations and the IORINGOPMADVISE implementation, aka CID-bc0c4d1e176e...

kernel security, bug fix, and enhancement update

4.18.0-240.OL8 - Oracle Linux certificates Kevin Lyons - Disable signing for aarch64 Ilya Okomin - Oracle Linux RHCK Module Signing Key was added to the kernel trusted keys list olkmodsigningkey.pem Orabug: 29539237 - Update x509.genkey Orabug: 24817676 - Conflict with shim-ia32 and shim-x64 =...

PT-2020-6011 · Linux · Linux Kernel

Name of the Vulnerable Software and Affected Versions: Linux Kernel affected versions not specified Description: A use-after-free flaw was found in the io uring in Linux kernel, where a local attacker with user privilege could cause a denial of service problem on the system. The issue results fro...

PT-2021-12035 · Linux +1 · Linux Kernel +1

Name of the Vulnerable Software and Affected Versions: Linux kernel versions prior to 5.8.2 Description: An issue was discovered related to a use-after-free in the Linux kernel, specifically in fs/io uring.c, involving io async task func and ctx reference holding. Recommendations: For Linux kerne...