CVE-2022-49144 io_uring: fix memory leak of uid in files registration

In the Linux kernel, the following vulnerability has been resolved: iouring: fix memory leak of uid in files registration When there are no files for iosqefilesscm to process in the range, it'll free everything and return. However, it forgets to put uid...

CVE-2022-49144

CVE-2022-49144 pertains to the Linux kernel io_uring subsystem. The issue stems from a memory-leak when registering files: if there are no files to process in __io_sqe_files_scm(), the code frees resources but forgets to restore the uid, leading to a leak. The connected documents confirm this exa...

CVE-2022-49144

In the Linux kernel, the following vulnerability has been resolved: iouring: fix memory leak of uid in files registration When there are no files for iosqefilesscm to process in the range, it'll free everything and return. However, it forgets to put uid...

CVE-2022-49056

CVE-2022-49056 entry is rejected/not used per the Initial Description.

CVE-2022-49056

...

CVE-2022-49056

Removed by vendor...

VulnCheck KEV: CVE-2024-0582

A memory leak flaw was found in the Linux kernel’s iouring functionality in how a user registers a buffer ring with IORINGREGISTERPBUFRING, mmap it, and then frees it. This flaw allows a local user to crash or potentially escalate their privileges on the system...

PT-2025-7984

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A vulnerability in the Linux kernel has been resolved, related to io uring and the handling of file assignment and credentials. The issue required either restoring credentials properly i...

CVE-2022-49144: Missing Release of Memory after Effective Lifetime

In the Linux kernel, the following vulnerability has been resolved: iouring: fix memory leak of uid in files registration When there are no files for iosqefilesscm to process in the range, it'll free everything and return. However, it forgets to put uid...

USN-7234-5: Linux kernel vulnerabilities

Ye Zhang and Nicolas Wu discovered that the iouring subsystem in the Linux kernel did not properly handle locking for rings with IOPOLL, leading to a double-free vulnerability. A local attacker could use this to cause a denial of service system crash or possibly execute arbitrary code...

USN-7234-5 linux-aws-5.4 linux-raspi-5.4 vulnerabilities

Ye Zhang and Nicolas Wu discovered that the iouring subsystem in the Linux kernel did not properly handle locking for rings with IOPOLL, leading to a double-free vulnerability. A local attacker could use this to cause a denial of service system crash or possibly execute arbitrary code...

Ubuntu 20.04 LTS / 22.04 LTS : Linux kernel vulnerabilities (USN-7291-1)

"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-7291-1 advisory. Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update...

DEBIAN-CVE-2023-52926

In the Linux kernel, the following vulnerability has been resolved: IORINGOPREAD did not correctly consume the provided buffer list when read i/o returned 0 except for -EAGAIN and -EIOCBQUEUED return. This can lead to a potential use-after-free when the completion via iorwdone runs at separate...

CVE-2023-52926 io_uring/rw: split io_read() into a helper

In the Linux kernel, the following vulnerability has been resolved: IORINGOPREAD did not correctly consume the provided buffer list when read i/o returned 0 except for -EAGAIN and -EIOCBQUEUED return. This can lead to a potential use-after-free when the completion via iorwdone runs at separate...

CVE-2023-52926 io_uring/rw: split io_read() into a helper

In the Linux kernel, the following vulnerability has been resolved: IORINGOPREAD did not correctly consume the provided buffer list when read i/o returned 0 except for -EAGAIN and -EIOCBQUEUED return. This can lead to a potential use-after-free when the completion via iorwdone runs at separate...

Linux io_uring Use-After-Free Exploit

The Linux kernel suffers from a use-after-free of struct ioevfd because ioeventfddosignal frees an object when the refcount reaches zero without waiting for the required grace period. Summary UAF of struct ioevfd because ioeventfddosignal frees an object when the refcount reaches zero without...

Linux io_uring Use-After-Free

The Linux kernel suffers from a use-after-free of struct ioevfd because ioeventfddosignal frees an object when the refcount reaches zero without waiting for the required grace period. Summary UAF of struct ioevfd because ioeventfddosignal frees an object when the refcount reaches zero without...

The vulnerability of the io_uring component in the Linux operating system’s kernel allows a hacker to cause a service failure.

The vulnerability of the iouring component in the Linux operating system’s kernel is related to incorrect blocking of resources in the iotctxexitcb function. Exploiting this vulnerability can allow an attacker to cause a service failure...

SUSE CVE-2023-2236

A use-after-free vulnerability in the Linux Kernel iouring subsystem can be exploited to achieve local privilege escalation. Both ioinstallfixedfile and its callers call fput in a file in case of an error, causing a reference underflow which leads to a use-after-free vulnerability. We recommend...

SUSE CVE-2023-3389

A use-after-free vulnerability in the Linux Kernel iouring subsystem can be exploited to achieve local privilege escalation. Racing a iouring cancel poll request with a linked timeout can cause a UAF in a hrtimer. We recommend upgrading past commit ef7dfac51d8ed961b742218f526bd589f3900a59...