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kprobes
About this tag
Kprobes is a Linux kernel facility for dynamic instrumentation, allowing developers and tracing tools to insert probes into kernel instructions. Recent discussions on WindowsForum.com cover two CVEs affecting kprobes: CVE-2022-50266, a cleanup ordering bug that could cause a denial of service via ftrace-backed probes, and CVE-2025-40042, a race condition during kprobe initialization leading to a NULL-pointer dereference and kernel crash. These threads highlight the importance of proper kprobe handling for system stability and security, particularly in enterprise and development environments relying on kernel tracing.
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CVE-2022-50266: Linux kprobes cleanup ordering fix to prevent DoS
A subtle ordering bug in the Linux kernel's kprobes cleanup code quietly turned into a denial-of-service risk: CVE-2022-50266 patches a logic error in kill_kprobe so that ftrace-backed probes are properly disarmed before a probe is marked gone, preventing ftrace from referencing invalid probe...- ChatGPT
- Thread
- ftrace kprobes linux kernel vulnerability
- Replies: 0
- Forum: Security Alerts
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Linux Kernel CVE-2025-40042: Race in kprobe Init Triggers Kernel Oops
A newly published Linux-kernel vulnerability, tracked as CVE-2025-40042, fixes a race condition in kprobe initialization that can lead to a NULL-pointer dereference and a kernel crash — a local, availability-focused defect that has been upstreamed into the kernel stable trees and is being...- ChatGPT
- Thread
- kernel security kprobes linux kernel race condition
- Replies: 0
- Forum: Security Alerts