# page cache poisoning

Published articles for page cache poisoning.

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## Dirty Frag (CVE-2026-43284 and CVE-2026-43500): Detecting unpatched local privilege escalation via Linux Kernel ESP and RxRPC

DevFeed: [Dirty Frag (CVE-2026-43284 and CVE-2026-43500): Detecting unpatched local privilege escalation via Linux Kernel ESP and RxRPC](<https://devfeed.tech/articles/dirty-frag-cve-2026-43284-and-cve-2026-43500-detecting-unpatched-local-privilege-escalation-via-linux-kernel-esp-and-rxrpc-53215.md>)

Original publisher: [Read original article](<https://webflow.sysdig.com/blog/dirty-frag-cve-2026-43284-and-cve-2026-43500-detecting-unpatched-local-privilege-escalation-via-linux-kernel-esp-and-rxrpc>)

Author: Michael Clark

Published: 2026-05-08T00:00:00Z

Content type: article

Language: en

Sources: [Sysdig](<https://devfeed.tech/sources/sysdig-blog.md>)

Topics: [Linux Kernel](<https://devfeed.tech/topics/linux-kernel.md>), [Vulnerabilities](<https://devfeed.tech/topics/vulnerabilities.md>), [Security](<https://devfeed.tech/topics/security.md>), [Linux](<https://devfeed.tech/topics/linux.md>), [Threat Research](<https://devfeed.tech/topics/threat-research.md>), [Falco](<https://devfeed.tech/topics/falco.md>)

Tags: [2026](<https://devfeed.tech/tags/2026.md>), [container-security](<https://devfeed.tech/tags/container-security.md>), [critical](<https://devfeed.tech/tags/critical.md>), [cve](<https://devfeed.tech/tags/cve.md>), [cve-2026-43284](<https://devfeed.tech/tags/cve-2026-43284.md>), [cve-2026-43500](<https://devfeed.tech/tags/cve-2026-43500.md>), [cybersecurity-threat-research](<https://devfeed.tech/tags/cybersecurity-threat-research.md>), [detection](<https://devfeed.tech/tags/detection.md>), [dirty-frag](<https://devfeed.tech/tags/dirty-frag.md>), [falco](<https://devfeed.tech/tags/falco.md>), [falco-rules](<https://devfeed.tech/tags/falco-rules.md>), [ipsec-esp-vulnerability](<https://devfeed.tech/tags/ipsec-esp-vulnerability.md>), [kernel-exploit](<https://devfeed.tech/tags/kernel-exploit.md>), [linux](<https://devfeed.tech/tags/linux.md>), [linux-kernel](<https://devfeed.tech/tags/linux-kernel.md>), [linux-kernel-vulnerability](<https://devfeed.tech/tags/linux-kernel-vulnerability.md>), [linux-security](<https://devfeed.tech/tags/linux-security.md>), [local-privilege-escalation](<https://devfeed.tech/tags/local-privilege-escalation.md>), [lpe-exploit](<https://devfeed.tech/tags/lpe-exploit.md>), [page-cache-poisoning](<https://devfeed.tech/tags/page-cache-poisoning.md>), [privilege-escalation](<https://devfeed.tech/tags/privilege-escalation.md>), [root](<https://devfeed.tech/tags/root.md>), [root-access-exploit](<https://devfeed.tech/tags/root-access-exploit.md>), [rxrpc-vulnerability](<https://devfeed.tech/tags/rxrpc-vulnerability.md>), [sysdig](<https://devfeed.tech/tags/sysdig.md>), [sysdig-detection](<https://devfeed.tech/tags/sysdig-detection.md>)

### AI overview

This article examines Dirty Frag, two Linux kernel vulnerabilities that allow an unprivileged local user to escalate privileges to root. It describes their disclosure, affected kernel versions, root cause, and runtime detection coverage using Sysdig and Falco.

### Source excerpt

Dirty Frag (CVE-2026-43284, CVE-2026-43500) exposes a critical Linux kernel flaw enabling local privilege escalation to root. Learn how it works, affected systems, detection with Sysdig and Falco, and mitigation strategies.