kernel vulnerability

A newly disclosed Linux-kernel vulnerability in the Bluetooth L2CAP implementation — tracked as CVE-2025-21969 — is a slab use-after-free in l2cap_send_cmd that can trigger kernel memory corruption and sustained denial-of-service, and it has been fixed upstream by synchronizing the HCI receive...

Microsoft’s short MSRC wording that “Azure Linux includes this open‑source library and is therefore potentially affected” is accurate — but it is a scoped inventory attestation, not a technical guarantee that no other Microsoft product could contain the same vulnerable Linux kernel code. erview...

Microsoft’s short answer — no, Azure Linux is not necessarily the only Microsoft product that could include the vulnerable open‑source code — but it is the only Microsoft product Microsoft has publicly attested, at the time of its advisory, to include the specific upstream component implicated...

The concise answer is: No — Azure Linux is the only Microsoft product that Microsoft has publicly attested as including the implicated upstream component for CVE‑2025‑39790, but that attestation is product‑scoped and time‑boxed; it does not prove that other Microsoft artifacts cannot contain the...

The Linux kernel received a small but important fix in April 2024 that replaces a non‑zeroed allocation with a zeroing allocator in the file‑handle path — closing an information‑leak uncovered by syzbot and flagged as CVE‑2024‑26901. The change is surgical (replace kmalloc() with kzalloc() in...

A subtle but serious race-condition bug in the Linux kernel’s ATA over Ethernet (AoE) driver—tracked as CVE-2024-26898—has been fixed after researchers found a premature release of a network device reference that can produce a use-after-free condition. The flaw lives inside the aoecmd_cfg_pkts()...

Microsoft’s security telemetry and vendor advisories have confirmed a high‑impact vulnerability in the Windows kernel HTTP protocol stack: an elevation‑of‑privilege issue affecting the HTTP.sys driver. Administrators should treat this as an urgent remediation item for any hosts that bind...

Microsoft’s public record for CVE-2026-21239 identifies a kernel-level elevation of privilege in Windows and pairs that entry with Microsoft’s new “confidence” indicator — a vendor signal that shapes how defenders should triage, patch, and hunt for this class of risk. The entry is short on...

Microsoft’s Security Update Guide records CVE‑2026‑21245 as a Windows kernel elevation‑of‑privilege issue — a classic local attack surface that can let a low‑privileged user or process gain SYSTEM rights — and the vendor’s terse advisory pairs the entry with its confidence/technical‑detail...

Microsoft’s advisory listing for a Windows HTTP.sys elevation-of-privilege flaw should be treated as a high-priority remediation item: the vulnerability is recorded in vendor telemetry and public trackers, it affects the kernel-mode HTTP protocol stack that terminates HTTP requests for IIS and...

Microsoft has recorded CVE-2026-20870 as an elevation-of-privilege flaw in the Windows Win32 kernel subsystem; the vendor’s public entry confirms the existence of a kernel-level local EoP and attaches Microsoft’s “confidence” metric to the record — a signal administrators should treat as an...

Microsoft’s Security Update Guide lists a new Windows kernel vulnerability, CVE‑2026‑20860, in the Windows Ancillary Function Driver for WinSock (afd.sys) that Microsoft categorizes as an elevation‑of‑privilege (EoP) issue; the vendor has published an Update Guide entry and a security update...

Microsoft’s Security Response Center has recorded CVE‑2026‑20859 as a Windows kernel‑mode driver elevation of privilege vulnerability that administrators must treat as a high‑priority operational risk while they confirm exact build mappings and deploy vendor fixes. The vendor’s public advisory...

Microsoft’s advisory for CVE-2026-20831 identifies a kernel-level elevation-of-privilege issue in the Windows Ancillary Function Driver for WinSock (afd.sys) that enables an authenticated local user to escalate to SYSTEM on affected builds — administrators should treat the vendor update as...

Microsoft’s Security Update Guide lists CVE-2026-20810 as a vulnerability in the Windows Ancillary Function Driver for WinSock (afd.sys) where the driver “frees memory not on the heap,” allowing an authorized local attacker to elevate privileges on an affected system—an escalation that can turn...

Microsoft’s short public answer — that “Azure Linux includes this open‑source library and is therefore potentially affected” — is accurate for the product Microsoft has inventory‑checked, but it is not a categorical statement that no other Microsoft product could contain the same vulnerable...

A subtle but consequential flaw in the Linux kernel’s GS_USB CAN driver has been assigned CVE-2025-68343 after maintainers fixed a missing length check in the gs_usb_receive_bulk_callback handler. The bug allowed the driver to assume a full header was present in an incoming USB bulk transfer...

A logic ordering bug in the Smack Linux Security Module (LSM) has been assigned CVE-2025-68733 after maintainers corrected a code path that allowed unprivileged processes — under specific Smack configurations — to create new Smack labels by writing names into their own process attribute files...

Microsoft’s public advisory confirms that Azure Linux images include the upstream open‑source kernel code referenced by CVE‑2025‑38275 and are therefore potentially affected, but it does not assert that Azure Linux is the only Microsoft product that contains the vulnerable component — the...

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