{"id":"CVE-2026-90306","published":"2026-09-17T17:17:28.263","lastModified":"2026-09-21T14:17:28.903","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nARM: 9481/2: breakpoint: CFI breakpoints only on demand\n\nThis removes the stub hw_breakpoint_cfi_handler() from ARM, making\nit not steal breakpoint type 0x03 (ARM_ENTRY_CFI_BREAKPOINT) unless\nCFI is actively used in the kernel.\n\nWhen not instrumenting with CFI, or when a breakpoint is issued in\nuserspace, we fall through to return 1 from hw_breakpoint_pending()\n\"unhandled fault\" so userspace can make use of this breakpoint.\n\nTested with LKDTM and this command line:\necho CFI_FORWARD_PROTO > /sys/kernel/debug/provoke-crash/DIRECT\nstill works as expected.","cvssScore":null,"cvssSeverity":null,"cvssVector":null,"cwes":[],"vendors":[],"products":[],"references":[{"url":"https://git.kernel.org/stable/c/314f1a6762b5d51b37784ed7dc701d4c3d893703","tags":[]},{"url":"https://git.kernel.org/stable/c/8ed9bff906cf8036531d1559f10e82733a52b41f","tags":[]},{"url":"https://git.kernel.org/stable/c/da64b150e4b7bee615b33ab21f3137c31ec36922","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":null}