CVE-2023-2598

CVE-2023-2598 Refer: https://anatomic.rip/cve-2023-2598/ https://github.com/ysanatomic/iouringLPE-CVE-2023-2598 https://bsauce.github.io/2024/07/30/CVE-2023-2598/ Build: apt install -y liburing-dev gcc CVE-2023-2598.c -o CVE-2023-2598 -luring PoC: user1@syzkaller:$ uname -a Linux syzkaller 6.3.1 ...

ROS-20261009-73-0546

The vulnerability in the iouring/kbuf.c component of the Linux operating system’s kernel is related to insufficient checking of the status of the shared resource. Exploiting this vulnerability can allow an attacker to cause a service failure...

CVE-2026-80811

A flaw was found in the Linux kernel's iouring/cmd component. This vulnerability allows for a memory leak due to iovec arrays not being properly freed when asynchronous commands are not recycled. An attacker could potentially exploit this by triggering specific workloads, such as NVMe passthrough...

CVE-2026-80810

A flaw was found in the Linux kernel. An integer overflow vulnerability in the iouring/rsrc component, specifically within the iovecfillbvec function, can lead to incorrect memory calculations when handling very large memory pages. This error causes the kernel to access memory outside of its...

ROS-20261006-73-0110

The vulnerability of the iopollcheckevents function in the iouring/poll.c module of the Linux kernel’s asynchronous I/O interface involves executing a loop with an unconditionally exit condition. Exploiting this vulnerability could allow an attacker to cause a service failure...

ROS-20261006-73-0214

The vulnerability of the ioworkerhandlework function in the iouring/io-wq.c module, which is part of the Linux kernel’s asynchronous input/output interface, is related to improper resource release. Exploiting this vulnerability could allow an attacker to cause a service failure...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: iouring/eventfd: Ensure that ioeventfdsignal delays another RCU period. The function ioeventfddosignal is invoked from an RCU callback. However, when the reference to ioevfd is dropped, it directly calls ioeventfdfree if the...

Astra Linux – Vulnerability found in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: iouring: Lock overflow for IOPOLL. syzbot reports an issue with overflow during IOPOLL operations: WARNING: CPU: 0 PID: 28; at iouring, iouring.c:734; function iocqringeventoverflow+0x1c0/0x230; function iouring, iouring.c:734...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: iouring: Fixed ioreqprepasync with provided buffers. ioreqprepasync can import the provided buffers and commit the ring state by giving up on those buffers before doing so. If needed, they will be reimported later...

Astra Linux – Vulnerabilities in Linux, Linux-5.15, Linux-5.10

In the Linux kernel, the following vulnerability has been resolved: iouring/afunix: Defer the garbage collection of registered files to iouring’s responsibility. Instead of having unixgc handle the registered files of iouring, we want iouring to handle them itself. The key here is to consider the...

Astra Linux – Vulnerability found in Linux 6.1, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: iouring/poll: A signed comparison in iopollgetownership was fixed. iopollgetownership uses a signed comparison to check whether pollrefs has reached the threshold for the slowpath: c if unlikelyatomicread&req-pollrefs =...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: iouring: fixed the memory leak related to the uid during file registration. When there are no files for iosqefilesscm to process within a certain range, it will free all resources and return. However, it forgot to set the uid...

Astra Linux – Vulnerability found in Linux 6.1, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: iouring: A filename leak was addressed in ioopenatprep. The ioopenatprep function allocates a struct filename using getname. However, if the file is installed in the fixed file table and the OCLOEXEC flag is set, the function...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: iouring/afunix: disabling the sending of iouring via sockets File reference cycles have caused many problems for iouring in the past. It still doesn’t work correctly, and it causes race conditions with unixstreamreadgeneric. The...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1, and Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: iouring/rw: fixed the omission of the NOWAIT check for ODIRECT write operations. When iouring initiates a write operation, it calls kiocbstartwrite, which triggers the super block rwsem. This prevents any freezes from occurring...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1, and Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: iouring: prevents opcode speculation. sqe-opcode is used for different tables; ensure that we address this issue to prevent speculation...

Astra Linux – Vulnerability found in Linux 6.1, Linux 5.10, and Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: iouring/tctx: A workaround has been implemented for the allocation error issue with xastore. The syzbot triggered the following WARNON: WARNING: CPU: 0 PID: 16 at iouring/tctx.c:51 iouringfree+0xfa/0x140 iouring/tctx.c:51 The...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel before version 5.17.3, fs/iouring.c contains a use-after-free issue due to a race condition related to iouring timeouts. This issue can be triggered by a local user who does not have access to any user namespace. However, the race condition may only be exploited infrequently...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: iouring/kbuf: Check whether the target buffer list is still of the legacy type during recycling. There is a gap between the time the buffer is acquired and the time it potentially gets recycled. If the bufferlist is empty, someon...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: iouring/io-wq: It is now checked whether IOWQBITEXIT is rechecked for each linked work item. The commit 10dc95939817 “iouring/io-wq: Check IOWQBITEXIT within the work run loop” fixed a obvious case where ioworkerhandlework took o...