kernel security

The Linux kernel has closed a small but important robustness hole in the ALSA usb‑audio stack: CVE‑2025‑40275 is a NULL‑pointer dereference in snd_usb_mixer_controls_badd that can be triggered by a crafted USB audio descriptor, and the upstream fix adds a simple NULL check to prevent an oops...

The short answer is: No — Azure Linux is not necessarily the only Microsoft product that includes the sunxi‑ng h616 clock code and is therefore potentially affected; it is the only Microsoft product Microsoft has publicly attested so far to include the upstream component for CVE‑2025‑38041, and...

Microsoft’s brief 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 categorical statement that no other Microsoft product could include the same vulnerable kernel code. Background /...

Microsoft’s public advisory for CVE-2025-38022 makes a precise, limited claim: Azure Linux includes the implicated open‑source kernel code and is therefore potentially affected — and Microsoft says it will expand its machine‑readable CSAF/VEX attestations if other Microsoft products are later...

A subtle but important race-condition in the Linux kernel’s process‑limit handling has been recorded as CVE‑2025‑40201: upstream maintainers changed kernel/sys.c to stop taking task_lock(tsk->group_leader) from unsafe contexts and instead make conditional use of tasklist_lock to avoid...

A kernel-level use-after-free (UAF) defect in the VMware graphics driver drm/vmwgfx has been assigned CVE‑2025‑40111 and fixed upstream; the problem stems from a resource from an arena allocator escaping the validation cleanup path, which can leave a freed node reachable in a duplicates...

A kernel flaw in the Sound Open Firmware (SOF) IPC4 topology code — tracked as CVE-2025-21870 — can cause NULL-pointer dereferences and broken audio pipelines on affected Linux kernels, and Microsoft’s public attestation that “Azure Linux includes this open‑source library and is therefore...

Microsoft’s public attestation that Azure Linux includes the open‑source kernel component tied to CVE‑2025‑21885 is accurate — but it is a product‑scoped inventory statement, not a universal technical guarantee that no other Microsoft product can include the same vulnerable code. Azure Linux is...

Title: CVE-2025-21825 — bpf: “Cancel the running bpf_timer through kworker for PREEMPT_RT” (what happened, who’s affected, and what to do) Date: March 6, 2025 (published / CVE assignment) — updated summary for sysadmins (Dec 7, 2025) Summary A kernel-level locking problem involving BPF map...

A compact but consequential defensive fix in the Linux kernel’s AMD display driver has been tracked as CVE-2024-49921: a class of null pointer dereference bugs in drm/amd/display that, left unchecked, can produce deterministic kernel oopses and local denial-of-service (DoS) conditions on systems...

Microsoft’s brief statement that “Azure Linux includes this open‑source library and is therefore potentially affected” is accurate — but it is a product‑scoped attestation, not a technical guarantee that no other Microsoft product can include the same vulnerable Linux kernel component...

A small defensive change landed in the Linux AMDGPU DRM driver to prevent a reliable kernel NULL-pointer dereference: the patch adds a guard (a list-empty check) so the driver does not dereference a NULL pointer when iterating internal lists used by the DCN (Display Core Next) debug/logging...

Microsoft’s brief public guidance that “Azure Linux includes this open‑source library and is therefore potentially affected” is accurate for the product inventory Microsoft has completed so far — but it is not a blanket statement that no other Microsoft product can contain the same vulnerable...

Microsoft’s brief advisory that “Azure Linux includes this open‑source library and is therefore potentially affected” captures an important operational fact — Microsoft has inventory‑checked and attested Azure Linux for the HID s32ton issue tracked as CVE‑2025‑38556 — but it does not, and...

Short answer — No, not necessarily. Microsoft’s update guide explicitly states that “Azure Linux includes this open‑source library and is therefore potentially affected” and that Microsoft will expand product mappings (CSAF/VEX) if other Microsoft products are later found to ship the same...

Microsoft’s brief CVE entry and product note is correct — Azure Linux (formerly CBL‑Mariner) has been identified as including the open‑source kernel component referenced by CVE‑2025‑38636 and is therefore “potentially affected” — but that product‑level attestation is not a proof that no other...

Microsoft’s short statement that “Azure Linux includes this open‑source library and is therefore potentially affected” is accurate—and useful for Azure customers—but it is a product‑scoped attestation, not a categorical claim that no other Microsoft product can contain the same vulnerable Ceph...

A small memory-handling bug in the AMD DRM display driver has been fixed upstream, but its implications for stability and shared systems deserve immediate attention: CVE-2024-53133 describes a failure to handle a DML (Display Mode Library) allocation error that can lead to a shallow-copy of...

The short answer is: no — Azure Linux is not necessarily the only Microsoft product that could include the vulnerable Linux kernel code, but it is the only Microsoft product Microsoft has publicly attested so far to include the upstream component for CVE‑2025‑40105. Microsoft’s MSRC entry and...

A recently assigned Linux-kernel CVE — CVE-2025-40096 — discloses a memory-management defect in the kernel DRM scheduler (drm/sched) that can produce a double free when dependency handling fails, and Microsoft’s Security Response Center (MSRC) has published a product-level attestation stating...