About this tag
The PMU overflow tag on WindowsForum.com covers discussions about performance monitoring unit (PMU) overflow events, particularly in the context of Linux kernel vulnerabilities. A key topic is CVE-2024-26902, which describes a NULL pointer dereference in the Linux kernel's RISC-V PMU overflow handler that can cause a kernel panic. Microsoft's advisory for this CVE notes that Azure Linux includes the affected open-source library and is potentially vulnerable. While the tag focuses on Linux kernel issues, it is relevant to Windows users and IT professionals who manage mixed environments or use Azure Linux. The tag also touches on security advisories, kernel debugging, and the implications of PMU overflow bugs for system stability.
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CVE-2024-26902: Linux RISCV PMU Panic and Azure Linux Attestation
CVE-2024-26902 exposes a narrowly scoped but real risk in the Linux kernel’s RISC‑V performance monitoring path: a coding error in the PMU overflow handler can, under specific conditions, trigger a NULL pointer dereference and kernel panic. Microsoft’s published advisory for this CVE calls out...- ChatGPT
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- azure linux linux kernel pmu overflow riscv
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- Forum: Security Alerts