Astra Linux – Vulnerability found in Linux 6.1, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: nbd: fixed an UAF in nbdgenlconnect, where an error path occurred after calling nbdstartdevice. There is a use-after-free issue in nbd: - block nbd6: Received control failed result: -104; sockets are being shut down. Bug: KASAN:...

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

In the Linux kernel, the following vulnerabilities have been resolved: nbd: defer config put in recvwork There is one UAF issue in recvwork when running NBDCLEARSOCK and NBDCMDRECONFIGURE: - nbdgenlconnect // confref=2 connect and recvwork A - nbdopen // confref=3 - recvwork A completed //...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: nbd: The issue of task hanging when the signal interrupt nbdstartdeviceioctl occurs has been fixed. The following program is a simplified version of the reproducer function: c int mainvoid int sv2, fd; if socketpairAFUNIX,...

CVE-2026-90180

A flaw was found in the Linux kernel's mtip32xx block device driver. A local user with access to an already open block device could exploit a synchronization issue between ioctl handlers and device removal. This could lead to a use-after-free vulnerability, where the system attempts to access...

EulerOS 2.0 SP11 : util-linux (EulerOS-SA-2026-4384)

According to the versions of the util-linux packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : A flaw was found in the libblkid library of util-linux. During nested partition probing, the BSD, Minix, Solaris x86, and UnixWare partition...

EulerOS 2.0 SP15 : util-linux (EulerOS-SA-2026-3956)

According to the versions of the util-linux packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : A flaw was found in the libblkid library of util-linux. During nested partition probing, the BSD, Minix, Solaris x86, and UnixWare partition...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: nbd: The function genlunregisterfamily is called first in nbdcleanup. Otherwise, there may be a race between the removal of the module and the handling of the netlink command, which can lead to an oops as shown below: BUG: Kernel...

Astra Linux – Vulnerability in Linux, Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: block: Fixed an incorrect offset in biotruncate The biotruncate function clears the buffer outside of the last block of bdev. However, the current implementation of biotruncate uses the wrong offset for the page. As a result, it...

Astra Linux – Vulnerability in Linux

In the rbd block device driver located in drivers/block/rbd.c within the Linux kernel, up to version 5.8.9, incomplete permission checks were used for accessing rbd devices. This could have been exploited by local attackers to map or unmap rbd block devices, specifically the CID-f44d04e696fe devi...

Astra Linux – Vulnerability found in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: nullblk: Always check the queue mode setting from configfs. Make sure to check the device queue mode in the nullvalidateconf function, and return an error for NULLQRQ since we do not allow legacy I/O paths. Without this patch, we...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: nbd: fixed the race condition between timeout and normal completion. If the request for a timeout is handled by nbdrequeuecmd, normal completion must be stopped to avoid completing this queued request. This can lead to other...

Astra Linux – Vulnerability in NBD

In nbd-server in nbd before 3.24, there is an integer overflow that leads to a heap-based buffer overflow. A value of 0xffffffff in the name length field causes a zero-sized buffer to be allocated for the name, resulting in a write to a dangling pointer. This issue occurs for the NBDOPTINFO,...

Astra Linux – Vulnerability in util-linux

A flaw was discovered in the libblkid library of util-linux. During nested partition probing, the BSD, Minix, Solaris x86, and UnixWare partition probers cache a raw pointer to a parent partition entry in a dynamically allocated array. When subsequent partition additions cause the array to be...

Astra Linux – Vulnerability in Qemu

A NULL pointer dereference flaw was discovered in the floppy disk emulator of QEMU. This issue occurs when processing read/write ioport commands, especially if the selected floppy drive is not initialized using a block device. This flaw allows a privileged guest user to crash the QEMU process on...

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

In the Linux kernel, the following vulnerabilities have been resolved: nbd: The defer config unlock in nbdgenlconnect has been fixed. There is one use-after-free warning when running NBDCMDCONNECT and NBDCLEARSOCK: nbdgenlconnect: nbdallocandinitconfig // configrefs=1 nbdstartdevice // configrefs...

Astra Linux – Vulnerability in NBD

In nbd-server in nbd before 3.24, there is a stack-based buffer overflow. An attacker can cause a buffer overflow in the parsing of the name field by sending a crafted NBDOPTINFO or NBDOPTGO message with a large value as the length of the name...

[SECURITY] Fedora 45 Update: libnbd-1.25.7-3.fc45

NBD =E2=80=94 Network Block Device =E2=80=94 is a protocol for accessing Bloc k Devices hard disks and disk-like things over a Network. This is the NBD client library in userspace, a simple library for writing NBD clients. The key features are: Synchronous and asynchronous APIs, both for ease of...

CVE-2026-97902

A flaw was found in the Linux kernel. A local user can cause a Denial of Service DoS by initiating nested filesystem freeze and thaw operations. An incorrect error code returned during nested thaw requests causes the kernel to retain an elevated freeze counter on the underlying block device...

CVE-2026-97902: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: fs: don't return -EINVAL for successful nested thaw Commit 7366f8b6fc6a "fs: handle freezing from multiple devices" replaced the freezeholders bitmask with per-holder counters to allow nested freezes. In the bitmask version, a th...

CVE-2026-97902: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: fs: don't return -EINVAL for successful nested thaw Commit 7366f8b6fc6a "fs: handle freezing from multiple devices" replaced the freezeholders bitmask with per-holder counters to allow nested freezes. In the bitmask version, a th...