🚨Patch Failures Surge to 2.3% in 90 Days
Patch failures are skyrocketing, and it's not just a numbers game
TL;DR
Patch failures have surged to 2.3% in 90 days, up from 0.2%. This spike affects critical vulnerabilities like server-side request forgery and prototype-pollution, highlighting the need for thorough testing before deployment.
Patch failures have surged to 2.3% in 90 days, up from 0.2% in previous years. This increase is particularly concerning for server-side request forgery and prototype-pollution vulnerabilities, which are more likely to be bypassed due to their reliance on reject-lists of inputs. Attackers only need to find one encoding of a bad input to bypass the fix. This trend is alarming for Linux kernel vulnerabilities, with 3.2% of CVEs introduced by the fix for another CVE. Sysadmins and software vendors must now consider whether a patch fixes the root cause, covers the whole bug class, and doesn't break something else before deployment. This shift in patch reliability is a critical issue for anyone managing security updates.

Key Points
Patch failures increased from 0.2% to 2.3% within 90 days in 2026.
Server-side request forgery and prototype-pollution vulnerabilities are more likely to be bypassed.
3.2% of Linux kernel CVEs were introduced by the fix for another CVE.
10% of CVEs in busy subsystems like fs/smb and net/sched were introduced by the fix for another CVE.
Software vendors and sysadmins should ask if a patch fixes the root cause, covers the whole bug class, and doesn't break something else.
Why It Matters
If you're managing security updates for Linux systems, the 3.2% increase in CVEs introduced by fixes is a red flag. The spike in patch failures means thorough testing and validation are now critical before deploying any security updates. This affects every team responsible for system security and highlights the need for robust patch management practices.
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