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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CVE-2020-29534: Undefined Security Weakness

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...

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...

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 5.3 Insecure Root Path Handling

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 also has some security implications on existing releases. On 5.5, the incorrect handling of OPENAT means that not only the cwd, but also the...

The vulnerability of the io_uring function in the Linux operating system’s kernel allows attackers to increase their privileges.

The vulnerability of the iouring function in the Linux operating system’s kernel is related to errors in privilege management. Exploiting this vulnerability can allow an attacker to enhance their privileges...

CVE-2019-19241

In the Linux kernel before 5.4.2, the iouring feature leads to requests that inadvertently have UID 0 and full capabilities, aka CID-181e448d8709. This is related to fs/io-wq.c, fs/iouring.c, and net/socket.c. For example, an attacker can bypass intended restrictions on adding an IPv4 address to...

CVE-2019-19241

In the Linux kernel before 5.4.2, the iouring feature leads to requests that inadvertently have UID 0 and full capabilities, aka CID-181e448d8709. This is related to fs/io-wq.c, fs/iouring.c, and net/socket.c. For example, an attacker can bypass intended restrictions on adding an IPv4 address to...

DEBIAN-CVE-2019-19241

In the Linux kernel before 5.4.2, the iouring feature leads to requests that inadvertently have UID 0 and full capabilities, aka CID-181e448d8709. This is related to fs/io-wq.c, fs/iouring.c, and net/socket.c. For example, an attacker can bypass intended restrictions on adding an IPv4 address to...

CVE-2019-19241

In the Linux kernel before 5.4.2, the iouring feature leads to requests that inadvertently have UID 0 and full capabilities, aka CID-181e448d8709. This is related to fs/io-wq.c, fs/iouring.c, and net/socket.c. For example, an attacker can bypass intended restrictions on adding an IPv4 address to...

CVE-2019-19241

In the Linux kernel before 5.4.2, the iouring feature leads to requests that inadvertently have UID 0 and full capabilities, aka CID-181e448d8709. This is related to fs/io-wq.c, fs/iouring.c, and net/socket.c. For example, an attacker can bypass intended restrictions on adding an IPv4 address to...

Design/Logic Flaw

In the Linux kernel before 5.4.2, the iouring feature leads to requests that inadvertently have UID 0 and full capabilities, aka CID-181e448d8709. This is related to fs/io-wq.c, fs/iouring.c, and net/socket.c. For example, an attacker can bypass intended restrictions on adding an IPv4 address to...

UBUNTU-CVE-2019-19241

In the Linux kernel before 5.4.2, the iouring feature leads to requests that inadvertently have UID 0 and full capabilities, aka CID-181e448d8709. This is related to fs/io-wq.c, fs/iouring.c, and net/socket.c. For example, an attacker can bypass intended restrictions on adding an IPv4 address to...

CVE-2019-19241

CVE-2019-19241 affects the Linux kernel prior to 5.4.2 where the io_uring path can cause requests to appear with UID 0 and full capabilities due to IORING_OP_SENDMSG handling by kernel worker threads in contexts from unprivileged users. Affected code paths include fs/io-wq.c, fs/io_uring.c, and n...

CVE-2019-19241

In the Linux kernel before 5.4.2, the iouring feature leads to requests that inadvertently have UID 0 and full capabilities, aka CID-181e448d8709. This is related to fs/io-wq.c, fs/iouring.c, and net/socket.c. For example, an attacker can bypass intended restrictions on adding an IPv4 address to...