EUVD-2026-55574

In the Linux kernel, the following vulnerability has been resolved: smb/client: handle overlapping allocated ranges in fallocate smb3simplefallocaterange can skip holes when an allocated range returned by the server starts before the current fallocate offset. The skipped hole is not zero-filled,...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: ksm: The range-walk function is used to bypass holes in scangetnextrmapitem. Currently, scangetnextrmapitem walks every page address in a VMA to locate mergeable pages. This approach becomes highly inefficient when scanning large...

Chinese Threat Actor Uses Leaked DarkSword Kit to Deploy GHOSTBLADE on iOS

An unknown Chinese-speaking threat actor has been observed running a campaign targeting Apple iOS devices by leveraging a publicly leaked version of the DarkSword exploit kit. Attack surface management platform Censys said it identified the threat actor running more than 100 web properties, most ...

A week in security (July 27 – August 2)

Last week on Malwarebytes Labs: Fake Fortnite rewards are stealing players’ accounts Fake Flash Player installs AtlasRAT Malwarebytes for Windows, now available on the Microsoft Store Hims & Hers sued over alleged health data privacy failures Hidden prompt turns Microsoft Copilot into an AI worm...

Hackers Exploit AnySign4PC via Hacked Korean Sites to Install Backdoors Without Prompts

South Korean authorities and four security firms have disclosed a state-sponsored campaign that compromised trusted domestic websites. The attackers used those sites to exploit locally installed financial-security software and infect targeted visitors with SIGNBT or COPPERHEDGE backdoors. A...

UBUNTU-CVE-2026-64457

In the Linux kernel, the following vulnerability has been resolved: virtiopci: fix vq info pointer lookup via wrong index Unbinding a virtio balloon device: echo virtio0 /sys/bus/virtio/drivers/virtioballoon/unbind triggers a NULL pointer dereference. The dmesg says: BUG: kernel NULL pointer...

UBUNTU-CVE-2026-46013

In the Linux kernel, the following vulnerability has been resolved: mm/memfdluo: fix physical address conversion in putfolios cleanup In memfdluoretrievefolios's putfolios cleanup path: 1. khorestorefolio expects a physaddrt physical address but receives a raw PFN pfolio-pfn. This causes...

CVE-2026-46013 mm/memfd_luo: fix physical address conversion in put_folios cleanup

In the Linux kernel, the following vulnerability has been resolved: mm/memfdluo: fix physical address conversion in putfolios cleanup In memfdluoretrievefolios's putfolios cleanup path: 1. khorestorefolio expects a physaddrt physical address but receives a raw PFN pfolio-pfn. This causes...

EUVD-2026-32310

In the Linux kernel, the following vulnerability has been resolved: mm/memfdluo: fix physical address conversion in putfolios cleanup In memfdluoretrievefolios's putfolios cleanup path: 1. khorestorefolio expects a physaddrt physical address but receives a raw PFN pfolio-pfn. This causes...

CVE-2026-46013 mm/memfd_luo: fix physical address conversion in put_folios cleanup

In the Linux kernel, the following vulnerability has been resolved: mm/memfdluo: fix physical address conversion in putfolios cleanup In memfdluoretrievefolios's putfolios cleanup path: 1. khorestorefolio expects a physaddrt physical address but receives a raw PFN pfolio-pfn. This causes...

CVE-2026-45912 ext4: don't cache extent during splitting extent

In the Linux kernel, the following vulnerability has been resolved: ext4: don't cache extent during splitting extent Caching extents during the splitting process is risky, as it may result in stale extents remaining in the status tree. Moreover, in most cases, the corresponding extent block entri...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: NFSv4.2: Rework the handling of scratch space for READPLUS again. I found that the read code might send multiple requests using the same nfspgioheader. However, the nfs4procreadsetup function is only called once. As a result, we...

Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-000855)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-000855 advisory. A non-privileged user is able to mount a fuse filesystem on RHEL 6 or 7 and crash a system if an application punches a hole in a file that does not end aligned to a...

Unity Linux 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-002578)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-002578 advisory. The userfaultfd implementation in the Linux kernel before 4.19.7 mishandles access control for certain UFFDIO ioctl calls, as demonstrated by allowing local users to...

Unity Linux 20.1070e Security Update: kernel (UTSA-2026-000426)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-000426 advisory. The userfaultfd implementation in the Linux kernel before 4.19.7 mishandles access control for certain UFFDIO ioctl calls, as demonstrated by allowing local users to...

SUSE CVE-2025-68211

In the Linux kernel, the following vulnerability has been resolved: ksm: use range-walk function to jump over holes in scangetnextrmapitem Currently, scangetnextrmapitem walks every page address in a VMA to locate mergeable pages. This becomes highly inefficient when scanning large virtual memory...

EUVD-2025-203685

In the Linux kernel, the following vulnerability has been resolved: ksm: use range-walk function to jump over holes in scangetnextrmapitem Currently, scangetnextrmapitem walks every page address in a VMA to locate mergeable pages. This becomes highly inefficient when scanning large virtual memory...

AZL-72419 CVE-2025-68211 affecting package kernel for versions less than 6.6.121.1-1

In the Linux kernel, the following vulnerability has been resolved: ksm: use range-walk function to jump over holes in scangetnextrmapitem Currently, scangetnextrmapitem walks every page address in a VMA to locate mergeable pages. This becomes highly inefficient when scanning large virtual memory...

CVE-2025-68211

In the Linux kernel, the following vulnerability has been resolved: ksm: use range-walk function to jump over holes in scangetnextrmapitem Currently, scangetnextrmapitem walks every page address in a VMA to locate mergeable pages. This becomes highly inefficient when scanning large virtual memory...

AZL-78398 CVE-2025-68211 affecting package kernel for versions less than 5.15.200.1-1

In the Linux kernel, the following vulnerability has been resolved: ksm: use range-walk function to jump over holes in scangetnextrmapitem Currently, scangetnextrmapitem walks every page address in a VMA to locate mergeable pages. This becomes highly inefficient when scanning large virtual memory...