cve 2025 40027

About this tag
CVE-2025-40027 is a race-condition vulnerability in the Linux kernel's net/9p client. The bug could cause a double removal of a request from its tracking list, leading to list corruption and general-protection faults. It was discovered through KASAN and syzkaller fuzzing of 9p client flows. The 9P filesystem is commonly used in virtualization and embedded scenarios, such as QEMU's virtio. A fix has been applied to prevent the race condition. This tag covers discussions and technical details about the CVE, its impact, and the kernel patch that addresses it.

  1. Linux 9p Client Race Fix CVE-2025-40027 Prevents Double List Del

    A recent Linux kernel fix closes CVE-2025-40027, a race-condition bug in the net/9p client that could cause a double removal of a request from its tracking list — a logic race that KASAN and syzkaller surfaced as a general-protection fault and list corruption during heavy fuzzing of 9p client...
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