Things I build, break, fix, and write about

5 November 2026
Security Advisory – 05 Nov 2026

Daily security advisory summary for 05 Nov 2026

4 November 2026
Linux kernel net/sched UAF constraints on CentOS 9 desktop

Linux kernel net/sched use-after-free looks messy on paper, and on CentOS 9 Desktop it is worse, because the obvious paths are blocked and the useful...

4 November 2026
AI-assisted pull requests raise review cost

AI-assisted pull requests look cheap until you try to review them properly. I’ve seen tidy code hide a lot of work, and the cost only goes up when a...

4 November 2026
Security Advisory – 04 Nov 2026

Daily security advisory summary for 04 Nov 2026

Latest blog posts you might like

2 July 2026
Malware delivery through chatgpt.com/s links

ChatGPT share links can look boringly legitimate, which is exactly the problem. Once a trusted domain starts rendering attacker-controlled HTML, I stop trusting the address bar and start checking...

1 July 2026
cifs.upcall root trust and NSS lookup risk

A forged `cifs.spnego` request should die in the kernel, but on affected builds it reaches root-owned helper code instead. The ugly bit is `cifs.upcall`, where CIFS authentication key descriptions can...

1 July 2026
Harden PAN-OS by disabling auth override cookies

PAN-OS GlobalProtect authentication bypass is not a clever trick, it is a trust error with a neat finish. I prefer the boring fix, disable auth override cookies, then check the portal and gateway...

30 June 2026
Conditional access still anchors ZTNA policy

Zero Trust Network Access looks tidy until you test the policy against a failed identity provider, a stale token, or a changing location. I have seen too many setups where conditional access does all...

30 June 2026
ZTNA access policies for self-hosted services

ZTNA access policies only work when I treat the service, not the subnet, as the thing being protected. Once you start drawing the boundary around the app, rather than the VLAN, the gaps show up...

29 June 2026
Persisting federated users in AWS Cognito

AWS Cognito writes the user record before most people notice the decision point has gone, so I keep the real check in AWS Cognito PreSignUp_ExternalProvider. Anything later is tidying up after the...

29 June 2026
fits_open_file can copy arbitrary paths before validation

CFITSIO Extended Filename Syntax is the bit that makes me distrust a filename on sight. If `fits_open_file` gets attacker input, it can copy, fetch, or touch paths before FITS validation even starts,...

29 June 2026
Weekly Tech Digest | 29 Jun 2026

Stay updated with the latest in tech! This digest covers AI ethics, auto industry shifts, and the impact of politics on technology, exploring today's pressing issues.

28 June 2026
Android security boundary failures around AuthToken handling

Android Biometric AuthToken handling is one of those details that looks tidy until you trace what actually trusts it. I pay closest attention to the hand-off points, because that is where a neat...

28 June 2026
Access control in WrappedADS authorised mint flow

WrappedADS wrapTo() mint path is not hiding much, and that is the point. If the caller is trusted, the mint goes through; if that trust is wrong, supply moves just as easily.