{"id":"CVE-2026-90306","revision":"8289cdef531f4e6cb2cebec2aea6c069","records":[{"revision":"8289cdef531f4e6cb2cebec2aea6c069","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-90306","aliases":[],"title":"ARM: 9481/2: breakpoint: CFI breakpoints only on demand","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.","state":0,"publishedAt":"2026-09-17T16:08:28.387+00:00","modifiedAt":"2026-10-19T09:01:24.034+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"arch/arm/kernel/hw_breakpoint.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"c3f89986fde7bb9ccc86a901bf28e1f7d69fc3b3\",\n                            \"lessThan\": \"314f1a6762b5d51b37784ed7dc701d4c3d893703\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"c3f89986fde7bb9ccc86a901bf28e1f7d69fc3b3\",\n                            \"lessThan\": \"da64b150e4b7bee615b33ab21f3137c31ec36922\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"c3f89986fde7bb9ccc86a901bf28e1f7d69fc3b3\",\n                            \"lessThan\": \"8ed9bff906cf8036531d1559f10e82733a52b41f\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"arch/arm/kernel/hw_breakpoint.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6.10\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.10\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.52\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.6\",\n                            \"lessThanOrEqual\": \"7.2.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.3\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[],"references":["https://git.kernel.org/stable/c/314f1a6762b5d51b37784ed7dc701d4c3d893703","https://git.kernel.org/stable/c/da64b150e4b7bee615b33ab21f3137c31ec36922","https://git.kernel.org/stable/c/8ed9bff906cf8036531d1559f10e82733a52b41f"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-90306","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-90306","identifiers":["CVE-2026-90306"]},"retained":false,"historicalAffected":[]}],"coverage":[]}