kernel security

Short answer up front No — Azure Linux is not the only Microsoft product that Microsoft has identified as including the affected ravb code. Microsoft’s CSAF/VEX entry for CVE‑2025‑21801 lists Azure Linux (Azure Linux 3.0) and CBL Mariner kernel builds as known/confirmed components that include...

Microsoft’s brief MSRC advisory that “Azure Linux includes this open‑source library and is therefore potentially affected” is accurate for the Azure Linux product family, but it is a product‑scoped attestation — not a categorical claim that no other Microsoft product can include the same...

A small defensive change in the Linux kernel’s DRM subsystem — a missing NULL check in the xe_devcoredump path — was assigned CVE-2024-42081 and patched in mid‑2024; while the fix is trivial in code, the operational impact is real: a NULL assignment in kernel space can yield an immediate kernel...

A null-pointer bug in the Linux kernel’s virtio-pci driver — tracked as CVE-2024-42134 — can be triggered when the driver attempts to use an uninitialized pointer (vp_dev->is_avq) while tearing down virtqueues, allowing an attacker with local privileges to crash a guest and produce a...

The Linux kernel vulnerability tracked as CVE-2024-42151 fixes a subtle but dangerous mismatch between how the eBPF verifier reasons about a test-case function parameter and how the test itself actually invokes that function — a situation that can let the verifier elide a NULL check and allow a...

Microsoft’s MSRC advisory that “Azure Linux includes this open‑source library and is therefore potentially affected” is an authoritative, product‑scoped attestation — but it is not a categorical guarantee that no other Microsoft product contains the same vulnerable AMDGPU code; Azure Linux is...

The Linux kernel patch credited to CVE‑2024‑42066 fixes a subtle but important arithmetic bug in the DRM XE driver: the code now explicitly casts tbo->page_alignment to a 64‑bit unsigned type (u64) before performing a bit shift used to compute min_page_size, removing a possible integer overflow...

A small defensive change — adding a NULL check to xe_ttm_stolen_mgr_init in the DRM xe driver — has been recorded as CVE-2024-42065 and closes a simple but consequential kernel robustness hole that can be used to trigger a local denial-of-service by forcing a driver or kernel oops. The...

The Linux kernel patch for CVE-2024-42107 fixes a race in the Intel "ice" network driver where an external timestamp interrupt handler could process a timestamp after the driver had released its Precision Time Protocol (PTP) clock — a timing-of-check/time-of-use (TOCTOU) race that could produce...

A newly disclosed Linux kernel vulnerability in the RDMA/siw stack — tracked as CVE‑2024‑57857 — can cause a kernel-mode use‑after‑free (KASAN slab-use-after-free) in siw_query_port, producing a hard availability failure and forcing reboots or kernel oopses on affected systems; operators must...

Microsoft’s public mapping that “Azure Linux includes this open‑source library and is therefore potentially affected” is a precise, product‑level attestation — and it should be treated as an authoritative signal for any organization that runs Azure Linux images — but it is not a categorical...

Microsoft’s public attestation that “Azure Linux includes this open‑source library and is therefore potentially affected” should be read as a deliberate, product‑scoped inventory statement — authoritative for Azure Linux, useful for automation, but not proof that no other Microsoft product can...

A null-pointer risk in the Linux kernel’s RDS sysctl handlers — tracked as CVE‑2025‑21635 — has been fixed upstream after maintainers removed unsafe use of current->nsproxy from the rdstcp{rcv,snd}buf code, closing a denial‑of‑service vector that could produce kernel OOPSes and crashes in...

Microsoft’s brief advisory that “Azure Linux includes this open‑source library and is therefore potentially affected” is accurate as a product‑scoped attestation, but it is not a categorical proof that no other Microsoft product carries the same vulnerable Linux kernel component — any Microsoft...

Microsoft’s brief advisory that “Azure Linux includes this open‑source library and is therefore potentially affected” is accurate as a product‑scoped inventory statement — but it does not mean Azure Linux is technically the only Microsoft product that could include the vulnerable code, and...

Microsoft’s short, pointed wording on CVE-2025-37807 — “Azure Linux includes this open‑source library and is therefore potentially affected” — is accurate for the product Microsoft has inspected and is useful for customers running those images, but it should not be read as a blanket guarantee...

Short answer (straight to your question) No — “Azure Linux” is not provably the only Microsoft product that can contain the vulnerable btrfs code. It is the only Microsoft product Microsoft has publicly mapped and attested (via its VEX/CSAF output / Security Update Guide) to include the...

Microsoft’s MSRC entry for CVE‑2025‑37745 correctly identifies a Linux‑kernel fix — a deadlock avoidance change in hibernate_compressor_param_set — and explicitly states that Azure Linux “includes this open‑source library and is therefore potentially affected,” but that narrow phrasing is an...

Note: short answer up front No — Azure Linux is not technically the only Microsoft product that could include the vulnerable upstream code, but it is the only Microsoft product Microsoft has publicly attested (via CSAF/VEX) as including the affected open‑source component at the time of the...

Microsoft’s advisory for CVE-2025-38704 names Azure Linux as the Microsoft product that “includes this open‑source library and is therefore potentially affected,” but that product‑level attestation is an inventory statement — not a technical guarantee that no other Microsoft image, kernel, or...