Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: In iouring/net, there is a fix for a slab-out-of-bounds read in iobundlenbufs. sqe-len is defined as u32, but it is stored in sr-len, which is of type int. When userspace values of sqe-len exceed INTMAX e.g., 0xFFFFFFFF, sr-len...

Astra Linux – Vulnerability in Linux

An integer overflow or wrap-around vulnerability in the iouring module of the Linux kernel allows a local attacker to cause memory corruption and escalate privileges to root. This issue affects Linux Kernel versions prior to 5.4.189, as well as version 5.4.24 and later versions...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: iouring/zcrx: fixed the warnings regarding page destruction. With multiple page pools, in some other cases, it is possible for niovs to be allocated during page pool destruction. The misplaced warning check, which ensured that...

Astra Linux – Vulnerability in Linux 5.10

There exists a use-after-free vulnerability in the Linux kernel through the iouring mechanism and the IORINGOPSPLICE operation. If the IORINGOPSPLICE operation lacks the IOWQWORKFILES flag, it indicates that the operation will not utilize current-nsproxy. As a result, its reference counter is not...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: iouring: Fixed the issue where multishot accept requests could lead to leaks. Setting REQFPOLLED does not guarantee that the request will be executed as a multishot from the polling path. Fortunately, if the code misidentifies...

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: Now waits for request completions upon exit. When the ring exits, cleanup is performed, and the final cancelations and waits for completions are handled by ioringexitwork. This function is invoked by kworker, which does...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: iouring/rw: Ensure that the allocated iovec is cleared in case of an early failure. A previous commit reused the recycling infrastructure for early cleanup, but this is not sufficient in cases where our internal caches overflow. ...

Astra Linux – Vulnerability in Linux 5.10

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 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 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 5.10

In the Linux kernel, the following vulnerability has been resolved: iouring/memmap: The nrpages value is cast to sizet before shifting. If the allocated size exceeds UINTMAX, it is necessary to cast the mr-nrpages value to sizet to prevent an overflow. In practice, this isn’t a major issue, as th...

Astra Linux – Vulnerability found in Linux 5.10, Linux 5.15

A use-after-free vulnerability in the Linux Kernel’s iouring system can be exploited to achieve local privilege escalation. The iofilegetfixed function lacks the presence of ctx-uringlock, which can lead to a Use-After-Free vulnerability due to a race condition where fixed files become...

Astra Linux – Vulnerability in Linux 5.10

iouring uses workFlags to determine which identities need to be retrieved from the calling process, ensuring that they are consistent with the calling process when executing IORINGOP. Some operations lack certain types, which can lead to incorrect reference counts, potentially causing a...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: iouring: A memory leak was fixed when removing provided buffers. When removing provided buffers, the iobuffer structures were not being disposed of properly, resulting in a memory leak. These structures cannot be freed...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: iouring/rw: Defer fsnotify calls to task context. We cannot defer these calls outside of the kiocb completion, as that might be off-soft/hard IRQ context. We should defer the calls until we process the taskwork for this reques...

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

In the Linux kernel, the following vulnerability has been resolved: iouring: Any code related to SCMRIGHTS has been removed. This is dead code after we stopped supporting the use of iouring for handling file I/O via SCMRIGHTS; it can now be discarded...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: iouring/net: The overflow check in iorecvmsgmshotprep has been fixed. The controllen variable is of type sizet unsigned long. Casting it to int could lead to an integer underflow. The checkaddoverflow function considers the type ...

Astra Linux – Vulnerability in Linux 5.10

Due to a vulnerability in the iouring subsystem, it is possible for kernel memory information to be leaked to the user process. timensinstall calls currentissinglethreaded to determine whether the current process is single-threaded. However, this call does not take into account iouring’s ioworker...

USN-8279-1: Linux kernel vulnerabilities

It was discovered that the Linux kernel algifaead module did not properly handle in-place cryptographic operations. This flaw is known as Copy Fail. A local attacker could use this to escalate privileges, or possibly escape a container. CVE-2026-31431 Several security issues were discovered in th...

Important: kernel6.18

Issue Overview: In the Linux kernel, the following vulnerability has been resolved: audit: add fchmodat2 to change attributes class CVE-2025-71239 In the Linux kernel, the following vulnerability has been resolved: fs: ntfs3: fix infinite loop in attrloadrunsrange on inconsistent metadata...