kernel security

Bring Your Own Vulnerable Driver (BYOVD) is no longer a theoretical red-team trick — it has become a practical, high-impact play in real-world intrusions that turns Windows’ own trust model into an offensive asset. Over the past two years operators from commodity ransomware groups to...

A small defensive change landed upstream this month that closes a straightforward—but impactful—NULL-pointer weakness in the Linux kernel’s NVMe-over-TCP target code. Left unpatched, the bug allows crafted NVMe/TCP traffic to cause a kernel NULL-pointer dereference and crash the host, producing...

The Linux kernel's QFQ (Quick Fair Queueing) network scheduler was patched this month to fix a NULL pointer dereference that could crash a system when a qdisc reset deactivates an aggregate that is actually inactive — the flaw has been catalogued as CVE-2026-22976 and was published on January...

A subtle pointer‑math mistake in the Linux kernel’s Netfilter nf_tables code — tracked as CVE‑2024‑0607 — lets a local actor corrupt internal data by writing eight bytes into a four‑byte slot inside nft_byteorder_eval(), producing memory corruption that leads to kernel instability and reliable...

A subtle memory-management bug deep inside the ext4 remount path—tracked as CVE-2024-0775—can turn routine mount option changes into a kernel-level use-after-free, enabling a local attacker to crash systems or leak kernel memory if left unpatched. Background ext4 is the default filesystem for...

A recently disclosed robustness bug in the Linux kernel’s Btrfs implementation can trigger an assertion failure and a kernel crash when a newly created subvolume is read before the filesystem has finished the final steps of subvolume creation, producing a local-denial-of-service condition that...

Microsoft’s brief public attestation that “Azure Linux includes this open‑source library and is therefore potentially affected” is accurate — but it is a product‑scoped inventory statement, not proof that Azure Linux is the only Microsoft product that can contain the vulnerable code tracked by...

Microsoft’s one-line advisory that “Azure Linux includes this open‑source library and is therefore potentially affected” is accurate — but it is a product‑scoped attestation, not a guarantee that no other Microsoft product could include the same vulnerable GFS2 code. Background / Overview The...

Microsoft’s one-line attestation that “Azure Linux includes this open‑source library and is therefore potentially affected” is an important, actionable statement — but it is not a technical guarantee that no other Microsoft product contains the same vulnerable NFS server code. The fix for...

Microsoft’s public mapping for CVE-2024-39484 correctly flags Azure Linux as a product that “includes this open‑source library and is therefore potentially affected,” but that carefully worded statement is a product‑scoped inventory attestation — not a technical guarantee that no other Microsoft...

A small change in the Intel i915 graphics stack — a decision to “get rid of devm” in the hwmon path — produced a classic kernel lifecycle bug with outsized operational impact: tracked as CVE‑2024‑39479, the defect creates a use‑after‑free (UAF) and local denial‑of‑service vector by letting hwmon...

A subtle accounting error inside the OCFS2 filesystem’s Direct I/O path has been fixed as CVE-2024-42077 — a bug that could exhaust journaling transaction credits during large or heavily fragmented DIO writes and force the filesystem to abort, producing kernel panics and a complete loss of...

Microsoft’s short, product‑scoped wording on CVE‑2024‑41007 — that “Azure Linux includes this open‑source library and is therefore potentially affected” — is accurate for the Azure Linux product family, but it is not a technical guarantee that no other Microsoft product could also include the...

Microsoft’s short MSRC attestation that “Azure Linux includes this open‑source library and is therefore potentially affected” is accurate for CVE‑2025‑38321 — but it is a product‑scoped inventory statement, not a proof that no other Microsoft product or image could contain the same vulnerable...

Microsoft’s brief public mapping for CVE-2025-38307 — “Azure Linux includes this open‑source library and is therefore potentially affected” — is accurate for the product it names, but it is a product‑scoped inventory attestation, not a technical guarantee that no other Microsoft product can...

Microsoft’s short MSRC line that “Azure Linux includes this open‑source library and is therefore potentially affected” is correct — but it is a product‑scoped attestation, not a universal guarantee that no other Microsoft product can contain the same vulnerable btrfs code. Treat Azure Linux as a...

Microsoft’s short public attestation that “Azure Linux includes this open‑source library and is therefore potentially affected” is accurate — but it is an inventory statement for one product, not a blanket claim that no other Microsoft product could contain the same vulnerable Linux kernel code...

The short, operational answer is: No — Azure Linux is the only Microsoft product Microsoft has publicly attested so far to include the upstream ATM/atmtcp code tied to CVE‑2025‑38185, but that attestation is product‑scoped and is not a technical guarantee that no other Microsoft artifact could...

The Linux kernel bug tracked as CVE-2025-38165 — described upstream as “bpf, sockmap: Fix panic when calling skb_linearize” — is a classic example of why vendor attestations matter, and why those attestations are not the same thing as exhaustive, global inventory. Microsoft’s public wording on...

The Linux kernel vulnerability tracked as CVE‑2025‑38161 — an RDMA/mlx5 bug that mishandles object rollback when a firmware command fails during Receive Queue (RQ) destruction — has prompted Microsoft to publish an attestation naming Azure Linux as a product that “includes this open‑source...