CVE-2023-54041 io_uring: fix memory leak when removing provided buffers

In the Linux kernel, the following vulnerability has been resolved: iouring: fix memory leak when removing provided buffers When removing provided buffers, iobuffer structs are not being disposed of, leading to a memory leak. They can't be freed individually, because they are allocated in...

CVE-2023-54041

CVE-2023-54041 concerns a Linux kernel issue in io_uring where memory leaks occur when removing provided buffers. The root cause is that io_buffer structs allocated in page-sized groups are not freed, since they cannot be freed individually; they must be added to a free list (e.g., io_buffers_cac...

CVE-2023-54030

Summary: CVE-2023-54030 affects the Linux kernel’s io_uring/net path. The issue is an overflow of multishot receive CQEs, which can lead to degraded performance and, in the worst case, OOM the task. The vulnerability has been resolved in the Linux kernel by upstream fixes. What changed: The patch...

CVE-2023-54030 io_uring/net: don't overflow multishot recv

In the Linux kernel, the following vulnerability has been resolved: iouring/net: don't overflow multishot recv Don't allow overflowing multishot recv CQEs, it might get out of hand, hurt performance, and in the worst case scenario OOM the task...

CVE-2023-54030 io_uring/net: don't overflow multishot recv

In the Linux kernel, the following vulnerability has been resolved: iouring/net: don't overflow multishot recv Don't allow overflowing multishot recv CQEs, it might get out of hand, hurt performance, and in the worst case scenario OOM the task...

CVE-2022-50705 io_uring/rw: defer fsnotify calls to task context

In the Linux kernel, the following vulnerability has been resolved: iouring/rw: defer fsnotify calls to task context We can't call these off the kiocb completion as that might be off soft/hard irq context. Defer the calls to when we process the taskwork for this request. That avoids valid...

CVE-2022-50705

CVE-2022-50705 is a Linux kernel issue in the io_uring subsystem where fsnotify callbacks were deferred to task context to avoid invoking them from kiocb completion contexts that may be in IRQ context. The described exploit path is blocked by this deferral, and the fix was applied in the kernel c...

CVE-2022-50705 io_uring/rw: defer fsnotify calls to task context

In the Linux kernel, the following vulnerability has been resolved: iouring/rw: defer fsnotify calls to task context We can't call these off the kiocb completion as that might be off soft/hard irq context. Defer the calls to when we process the taskwork for this request. That avoids valid...

CVE-2023-54030: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: iouring/net: don't overflow multishot recv Don't allow overflowing multishot recv CQEs, it might get out of hand, hurt performance, and in the worst case scenario OOM the task...

CVE-2023-54041: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: iouring: fix memory leak when removing provided buffers When removing provided buffers, iobuffer structs are not being disposed of, leading to a memory leak. They can't be freed individually, because they are allocated in...

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 the Linux kernel that stems from iouring not properly freeing memory when removing supplied buffers, which could lead to a memory leak...

CVE-2022-50705: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: iouring/rw: defer fsnotify calls to task context We can't call these off the kiocb completion as that might be off soft/hard irq context. Defer the calls to when we process the taskwork for this request. That avoids valid...

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 the Linux kernel that stems from an iouring network multi-receive operation that could overflow completion queue entries, potentially leading...

PT-2025-52987

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A flaw exists in the Linux kernel’s io uring/net subsystem related to multishot receive completion queue entries CQEs. The issue involves a potential overflow that could lead to...

PT-2025-52935

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 6.0.0-rc6-syzkaller-00321-g105a36f3694e Description The Linux kernel contains an issue within the io uring/rw subsystem. Specifically, the code was calling fsnotify functions from an inappropriate context, leadin...

Linux Distros Unpatched Vulnerability : CVE-2023-54030

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - iouring/net: don't overflow multishot recv Don't allow overflowing multishot recv CQEs, it might get out of hand, hurt performance, and in the worst case scenar...

openSUSE 16 Security Update : kernel (openSUSE-SU-2025:20172-1)

The remote openSUSE 16 host has packages installed that are affected by multiple vulnerabilities as referenced in the openSUSE-SU-2025:20172-1 advisory. The SUSE Linux Enterprise 16.0 kernel was updated to fix various security issues The following security issues were fixed: - CVE-2022-50253: bpf...

OPENSUSE-SU-2025:20172-1 Security update for the Linux Kernel

The SUSE Linux Enterprise 16.0 kernel was updated to fix various security issues The following security issues were fixed: - CVE-2022-50253: bpf: make sure skb-len != 0 when redirecting to a tunneling device bsc1249912. - CVE-2025-37916: pdscore: remove write-after-free of clientid bsc1243474. -...

SUSE CVE-2025-68294

In the Linux kernel, the following vulnerability has been resolved: iouring/net: ensure vectored buffer node import is tied to notification When support for vectored registered buffers was added, the import itself is using 'req' rather than the notification iokiocb, sr-notif. For non-vectored...

SUSE CVE-2025-68234

In the Linux kernel, the following vulnerability has been resolved: iouring/cmdnet: fix wrong argument types for skbqueuesplice If timestamp retriving needs to be retried and the local list of SKB's already has entries, then it's spliced back into the socket queue. However, the arguments for the...