▲ 62 r/Infosec+2 crossposts

TrustFall: When the Trusted Execution Environment Cannot Be Trusted

ByteRay researchers have published a blog on a set of vulnerabilities they are calling TrustFall, and the findings land hard for any company that treats the Trusted Execution Environment as the part of a device you do not have to worry about.

OP-TEE is the walled-off Secure World that phones, TVs, cars, and industrial gear lean on to guard keys, DRM, and identity, and the whole point of paying for that hardware isolation is the promise that even a compromised operating system cannot reach inside.

TrustFall shows that promise was not as solid as buyers assumed. The researchers found several flaws that let the untrusted side reach into or knock over the Secure World, which is exactly the outcome the design exists to prevent. The bugs have since been fixed upstream, so patched builds are available, but the uncomfortable takeaway for vendors is that the vault they were told to trust had a way in, and "it runs in the TEE" is no longer an answer on its own.

blog.byteray.co.uk
u/Emergency_Stable_923 — 12 days ago

Loom – MCP/HTTP code graph tool for agents (polyglot indexer)

Built an open-source indexer so agents can query call graphs without stuffing whole repos into context.

Loom walks a tree, stores facts in SQLite, and serves them over:

  • MCP (Streamable HTTP): callers/callees, symbols, paths
  • JSON HTTP API (+ small UI)

Languages: Go, C/C++, Python, PHP, TypeScript.

Repo: https://github.com/ByteRay-AI/Loom
License: Apache-2.0

Feedback welcome, especially MCP client setups and resolution quality on real trees.

byteray.co.uk
u/Emergency_Stable_923 — 16 days ago
▲ 7 r/AgenticSec+2 crossposts

Open-Sourcing Xpsd: LLM-Driven Reachability Triage for Dependency Vulnerabilities (SARIF Output)

Hey r/AgenticSec,

I just open-sourced Xpsd, a tool designed to solve the noise problem in Software Composition Analysis (SCA).

Standard dependency scanners alert you when a vulnerable package version is present, but they cannot tell you if the vulnerable function is actually reachable from your code. This leads to teams triaging massive backlogs based purely on CVSS scores rather than actual exposure.

How It Works

Xpsd equips an LLM agent with a set of read-only code-navigation tools to determine whether a reported CVE is actually reachable:

1) AST Structural Search (ast-grep): Navigates and parses the codebase structurally.
2) Advisory Lookup & Dependency Fetching: Gathers CVE context and traces imports.
3) Evidence Tracing: Traces the call path from external/untrusted input down to the vulnerable function call.

Key Features

1) Auditable Evidence: Every verdict requires file and line-level proof. No finding is dismissed without a reviewable rationale.
2) Native SARIF Output: Emits standard SARIF format, allowing results to ingest directly into GitHub Code Scanning or existing security dashboards.
3) Read-Only Tools: The agent uses strict navigation guardrails to focus purely on trace verification.
The goal is to make reachability analysis routine, transparent, and auditable, even for teams without dedicated AppSec resources.

Check out the repository here: https://github.com/ByteRay-AI/Xpsd

Feedback, edge cases, and PRs are welcome!

u/Emergency_Stable_923 — 18 days ago
▲ 1 r/AgenticSec+1 crossposts

White House launches AI-driven "Gold Eagle" clearinghouse to centralize public-private vulnerability coordination

The White House recently announced the Gold Eagle Initiative, a new federal program designed to use AI to centralize, prioritize, and accelerate vulnerability patching across critical infrastructure, government agencies, and tech partners. Operating out of CMU's Software Engineering Institute, it essentially acts as an AI-driven clearinghouse to fix security flaws before threat actors can exploit them.

Because let's face it, our current bug reporting and patching systems are absolute speed demons. It only takes a lifetime 🤦🏻‍♂️ or two to get a critical vulnerability acknowledged and fixed, so why change anything?

Btw, my candid opinion about the status of current vulnerability reporting is painfully slow, so we desperately need a framework that actually moves at the speed of the threat landscape. I think this initiative is genuinely a good idea and a step in the right direction, though the announcement is still light on the exact technical implementation.

I’m personally eager to see what will happen in practice, but it is definitely an impressive concept.
What are your thoughts on this? Will an AI-coordinated pipeline actually help scale response times, or is it just going to generate massive noise and triage fatigue for overworked infosec teams?

whitehouse.gov
u/Emergency_Stable_923 — 1 month ago
▲ 28 r/ExploitDev+2 crossposts

CVE-2026-47291: Windows Critical Unauthenticated Remote Code Execution in HTTP.sys

A critical severity vulnerability with a CVSS score of 9.8 in the Windows HTTP protocol stack (HTTP.sys) allows for unauthenticated remote code execution via an integer overflow. Because HTTP.sys processes incoming HTTP requests in kernel mode, this flaw carries a high impact, potentially allowing an unauthenticated attacker to execute arbitrary code with system privileges.

The underlying mechanics of this specific bug, including the exact assembly-level modifications, affected functions, and the execution path, have been thoroughly mapped out in the attached link. This includes the associated WinDbg reproduction details.

It seems like the era of waiting around to understand what actually changes under the hood on Patch Tuesday is largely behind us. Beyond this specific HTTP.sys analysis, the platform continuously tracks and hosts real-time structural breakdowns for the broader Windows patch ecosystem, making it a useful resource for footprinting similar kernel-level differentials.

byteray-ai.github.io
u/Emergency_Stable_923 — 1 month ago

Drift Corpus: binary diffs of Patch Tuesday and their analysis

Patch Tuesday confirms a CVE is fixed but not what changed in the binary, which function, which check, or whether it's a real fix or just churn.

The Drift Corpus is a diff of 240+ 2026 Windows kernel patches. Per entry: the changed functions with assembly, the bug class and call chain, WinDbg breakpoints to reproduce, and a plain-English root cause.

• ⁠Browse: https://byteray-ai.github.io/drift-corpus
• ⁠Repo: https://github.com/ByteRay-AI/drift-corpus

This repository breaks down Microsoft’s monthly kernel patches into clear binary changes, giving researchers a practical roadmap to find adjacent bugs, build faster EDR detections, and write precise firewall and network rules to block exploits at the perimeter.

reddit.com
u/Emergency_Stable_923 — 1 month ago

Drift Corpus: root cause and call chain for 240+ 2026 Windows kernel patches, open and free

The gap between "MSRC says it's fixed" and knowing what actually changed in the binary is where prioritisation quietly breaks down.

Drift Corpus diffs 240+ 2026 Windows kernel patches. Per patch: changed functions and assembly, bug class and call chain so you can reason about reachability, WinDbg breakpoints to reproduce, and a plain-English root cause.

Useful for building detections around specific kernel primitives, checking a patch does what you think, or triaging which of a month's fixes actually matter.

Browse: https://byteray-ai.github.io/drift-corpus
Repo: https://github.com/ByteRay-AI/drift-corpus

reddit.com
u/Emergency_Stable_923 — 1 month ago
▲ 62 r/BSD+2 crossposts

OpenBSD MPLS kernel stack leaks remotely (CVE-2026-56099)

A crafted MPLS packet can trigger an out-of-bounds read in mpls_do_error, leaking 4 bytes of adjacent kernel stack memory back in an ICMP/MPLS error response.

It requires MPLS enabled, but the leak is remote and repeatable. Fixed in OpenBSD-current on 2026-06-18.

pop.argus-systems.ai
u/Emergency_Stable_923 — 2 months ago
▲ 145 r/BSD+2 crossposts

27 Years in the Dark: OpenBSD Fixes Ancient Remote Kernel Auth Bypass

Absolutely wild find by Argus-Systems. A remote authentication bypass hiding in OpenBSD's kernel PPP stack since it was imported from FreeBSD in July 1999.
An attacker could essentially bypass authentication via a null-auth flaw and intercept/read PPPoE traffic without credentials. It survived every single release for nearly three decades until the patch.
OpenBSD already released a patch.

blog.argus-systems.ai
u/Emergency_Stable_923 — 2 months ago

Is SQL injection still a bug if the input comes from an admin-configured OAuth provider?

Zabbix reportedly closed this as “not a bug” because an admin has to configure the OAuth provider. Argus argues the SQL input still crosses from an external IdP into the database unsanitized. No exploit payloads here, just vendor-disputed analysis.

blog.argus-systems.ai
u/Emergency_Stable_923 — 2 months ago