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Geoff

sternecker@infosec.exchange

<p>BSidesCLE 2026 | ISC2CLE<br />Cybersecurity | Linux<br /><a href="https://infosec.exchange/tags/InfoSec" class="mention hashtag" rel="tag">#<span>InfoSec</span></a> <a href="https://infosec.exchange/tags/Linux" class="mention hashtag" rel="tag">#<span>Linux</span></a> <a href="https://infosec.exchange/tags/OpenSource" class="mention hashtag" rel="tag">#<span>OpenSource</span></a> <a href="https://infosec.exchange/tags/LGBTQ" class="mention hashtag" rel="tag">#<span>LGBTQ</span></a> <a href="https://infosec.exchange/tags/Vegan" class="mention hashtag" rel="tag">#<span>Vegan</span></a><br />Brain dumps.</p>

Posts

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    Score from #BSidesCle badges, cards, mug. Some stickers, and raspberry pi pico. Thank you all! Hope to see you at ISC2Cle meetup Tue. Will also be at Cleveland ISS summit next month. Plus, the Burning River Cyber Con in November!

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    Your AI just blew through $200k with $0 ROI. #tabletop #inject

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    Difficult not to get swept into dystopia as it is only grey and rainy and the sound of your cat barfing beacons out somewhere behind you.

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    Thinking about a 🔇 style tattoo for below my right ear if the therapy fails.

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    Sudden hearing loss. Right side 100% loss including via bone induction. Side effects are vertigo, nausea, spins. Left side was already reduced. About 70-80% deaf. Not sure if this is related to rapid weight loss. Went to Germany and walked 10+k per day, ate better quality food. Scale at doctors office indicated I&#39;d lost 20lbs in about 14 days. From duckduckgo search vestibular hearing loss can be associated with rapid weight loss. Fantastic.

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    Cle -&gt; Atl breakfast of champions.

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    BSides Cleveland 2026 is in 33 days. #BSidesCLE

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    From all the shows I watched as a kid, I thought there would be more quicksand.

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    &quot;We&quot; are clearly not doing sandboxes and guardrails correctly. Both Anthropic&#39;s and OpenAI&#39;s models breached test-environment boundaries during UK AI Security Institute evaluations. OpenAI&#39;s escaped a sandbox into real Hugging Face infrastructure (something like 17,600 logged actions over 4 days); while Anthropic&#39;s used fake identities to reach 3 real organizations from a test environment. These stories made it to NPR. So, mainstream. #AI #Guardrails #Sandbox #InfoSec

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    Pew pew lasers for space debris.

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    Phone: Charging rapidly, full in 3 hrs. I don&#39;t know that our definitions of rapidly are the same.

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    Streaming music and a new song is playing, I look up who it is because I like it. It&#39;s freaking AI. Damn it. That&#39;s not cool, I hoped to learn about a group of actual musicians or even solo artist that I could listen, watch, maybe go see, and no. Hopes dashed. Who is it based off, what prompts, so I can learn more about the sources. sigh filled Sunday #AI #Music #SundaySigh

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    If my electronics are spying on me.. well, let&#39;s just say right now, it&#39;s seen some things.

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    I have an older laptop. I run a lot on it, containers, local AI models. The thing that kills it, aide. :(

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    RefluXFS (CVE-2026-64600) is a race-condition in the Linux kernel&#39;s XFS copy-on-write path. (Kernel updates are available.) On an XFS filesystem with reflink enabled (Default on RHEL and similar, plus Amazon Linux), if you win a race during the copy-on-write remap lets the unprivileged local user overwrite the on-disk contents of any readable file on that volume including /etc/passwd or a SUID-root binary. What makes this wild: the changes persist across reboots, produce no kernel logs, b...

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    A few things to share, nginx: CVE-2026-42533 dropped yesterday 2026-07-15. It is fixed in nginx 1.31.3, also released yesterday. CVSS 8.1 or 9.2 depending on the nginx version. It&amp;#39;s a heap buffer overflow in the map directive when regex... regardless, it is unauthenticated, needs a custom HTTP request, can crash it or lead to code execution if Address space layout randomization (ASLR) is disabled, or bypassed. Don&amp;#39;t disable memory randomization. Not sure how to bypass ASLR, I&am...

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    Good News Everyone, BleachBit runs on the SAN! #IT #InfoSec

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    P vs NP is just Prod || Non-Prod #IT #Infosec

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    Two previously disclosed CVEs are actively-weaponized kernel root exploits. GhostLock CVE-2026-43499, and Bad Epoll CVE-2026-46242, are both public highly reliable exploits. Ghostlock also appears to enable a container escape and Bad Epoll is also working on Android. Both are fixed in kernel 6.12.96-1. If you have local user, upgrade the kernel &amp; boot it. BRB have to reboot :) #minimalist #Linux #Selfhosting #selfhosted #selfhost #InfoSec #Exploit

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    440 CVEs dropped to kernel cve-announce in the last 24 hrs?!?!?!? Whoa, calm thy horses! It looks like a backlog dump of resolved issues all sequentially numbered. No RCEs and all resolved. #minimalist #Linux #Selfhosting #selfhosted #selfhost #InfoSec #Exploit

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    Air quality is bad. A boil notice for water and filter notice because boiling does not remove lead. Ground contamination prevents gardening without raised beds.

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    A project to test AI guardrails. https://github.com/sternecker/guardrails STRONGER PROSE IS NOT ENFORCEMENT There is a notice in the repo that it is not to be processed. There is a script that will add markdown to the beginning of a PDF. There is an AWESOME original pdf from @pluralistic@mamot.fr and an updated.pdf with the new preface notice.

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    STRONGER PROSE IS NOT ENFORCEMENT

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    I listen to the band 7horse quite a bit. The &quot;station&quot; had been playing Cam Cole and I really have been enjoying the music. I had no idea that. Cam Cole is a one man band. Holy crap. Amazing.

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    Is the TV series silo based on the book wool?

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    Linus wept, I&#39;m still going through the CVEs.

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    We lost Sam Neill.

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    One down a bunch to go One more town another show

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    some people are harbingers of chaos.

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    laptop is hung trying to *stop* containers. :/