CVE-2026-43308: Linux btrfs Kernel Panic Fix – Azure
🟡 Medium | Source: Microsoft Security Response Center CVE-2026-43308 is a Linux kernel vulnerability in the btrfs filesystem driver, where an unexpected delayed reference type could trigger a kernel panic (BUG()). The fix prevents the kernel from crashing in this scenario by handling the unexpected condition gracefully. Although published via Microsoft’s security advisory channel for Azure, the underlying issue affects any Linux system using the btrfs filesystem, including Azure Linux-based virtual machines. ...