{"id":"CVE-2026-92517","revision":"690e93ee3abb4aafb481196755320581","records":[{"revision":"690e93ee3abb4aafb481196755320581","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-92517","aliases":[],"title":"bpf, riscv: Fix extable handling for arena load_acquire","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nbpf, riscv: Fix extable handling for arena load_acquire\n\nemit_atomic_ld_st() returns 1 to have build_body() skip the zext after\na sub-word load_acquire. The caller does \"ret = ret ?:\nadd_exception_handler(...)\", which skips add_exception_handler() on any\nnon-zero ret, so the extable entry is missing and a faulting\nPROBE_ATOMIC load_acquire oopses.\n\nREG_DONT_CLEAR_MARKER leaves rd stale on fault, and the verifier still\nthinks the load overwrote it, so a program can leak it through a map.\n\nCheck ret >= 0 before calling add_exception_handler(), and pass rd for\nLOAD_ACQ so the fault zeroes rd like a PROBE_MEM load. Return ret\nunchanged for the zext skip.","state":0,"publishedAt":"2026-09-17T16:10:25.482+00:00","modifiedAt":"2026-10-19T09:04:23.742+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/riscv/net/bpf_jit_comp64.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"fb7cefabae8117c203155ef169a386bec43bbba9\",\n                            \"lessThan\": \"26d9496c826586338d1b8c27edfec4a19a89f462\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"fb7cefabae8117c203155ef169a386bec43bbba9\",\n                            \"lessThan\": \"08fe2eaa609180c1baeb76c2629a9c82263b0427\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"fb7cefabae8117c203155ef169a386bec43bbba9\",\n                            \"lessThan\": \"5eb8921371c6fd117d4a328b6053dfda38707df8\",\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/riscv/net/bpf_jit_comp64.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6.18\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.18\",\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/26d9496c826586338d1b8c27edfec4a19a89f462","https://git.kernel.org/stable/c/08fe2eaa609180c1baeb76c2629a9c82263b0427","https://git.kernel.org/stable/c/5eb8921371c6fd117d4a328b6053dfda38707df8"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-92517","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-92517","identifiers":["CVE-2026-92517"]},"retained":false,"historicalAffected":[]}],"coverage":[]}