{"id":"CVE-2025-38586","revision":"d5e9c73f757b441f9a2fd06b8edc5eb9","records":[{"revision":"d5e9c73f757b441f9a2fd06b8edc5eb9","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2025-38586","aliases":[],"title":"bpf, arm64: Fix fp initialization for exception boundary","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nbpf, arm64: Fix fp initialization for exception boundary\n\nIn the ARM64 BPF JIT when prog->aux->exception_boundary is set for a BPF\nprogram, find_used_callee_regs() is not called because for a program\nacting as exception boundary, all callee saved registers are saved.\nfind_used_callee_regs() sets `ctx->fp_used = true;` when it sees FP\nbeing used in any of the instructions.\n\nFor programs acting as exception boundary, ctx->fp_used remains false\neven if frame pointer is used by the program and therefore, FP is not\nset-up for such programs in the prologue. This can cause the kernel to\ncrash due to a pagefault.\n\nFix it by setting ctx->fp_used = true for exception boundary programs as\nfp is always saved in such programs.","state":0,"publishedAt":"2025-08-19T17:03:08.012+00:00","modifiedAt":"2026-10-15T22:02:26.196+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/arm64/net/bpf_jit_comp.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"5d4fa9ec5643a5c75d3c1e6abf50fb9284caf1ff\",\n                            \"lessThan\": \"0dbef493cae7d451f740558665893c000adb2321\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"5d4fa9ec5643a5c75d3c1e6abf50fb9284caf1ff\",\n                            \"lessThan\": \"e23184725dbb72d5d02940222eee36dbba2aa422\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"5d4fa9ec5643a5c75d3c1e6abf50fb9284caf1ff\",\n                            \"lessThan\": \"1ce30231e0a2c8c361ee5f8f7f265fc17130adce\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"5d4fa9ec5643a5c75d3c1e6abf50fb9284caf1ff\",\n                            \"lessThan\": \"b114fcee766d5101eada1aca7bb5fd0a86c89b35\",\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/arm64/net/bpf_jit_comp.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6.12\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.12\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.42\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.15.10\",\n                            \"lessThanOrEqual\": \"6.15.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.16.1\",\n                            \"lessThanOrEqual\": \"6.16.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.17\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.8,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/0dbef493cae7d451f740558665893c000adb2321","https://git.kernel.org/stable/c/e23184725dbb72d5d02940222eee36dbba2aa422","https://git.kernel.org/stable/c/1ce30231e0a2c8c361ee5f8f7f265fc17130adce","https://git.kernel.org/stable/c/b114fcee766d5101eada1aca7bb5fd0a86c89b35"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2025-38586","license":"CVE Program Terms of Use","key":"cve-program:CVE-2025-38586","identifiers":["CVE-2025-38586"]},"retained":false,"historicalAffected":[]}],"coverage":[]}