{"id":"CVE-2026-92518","revision":"7b7414ac27684f0fb1f4e510e05e651a","records":[{"revision":"7b7414ac27684f0fb1f4e510e05e651a","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-92518","aliases":[],"title":"riscv, bpf: Fix kernel stack corruption in tailcall with CFI","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nriscv, bpf: Fix kernel stack corruption in tailcall with CFI\n\nWhen CONFIG_CFI_CLANG is enabled, prog->bpf_func already skips the kcfi\ninstruction during setup. Including it again in the tailcall jump offset\ncauses it to jump over an extra 4 bytes, skipping the stack pointer\nadjustment, which will result in kernel stack corruption.","state":0,"publishedAt":"2026-09-17T16:10:26.136+00:00","modifiedAt":"2026-10-19T09:04:24.705+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\": \"30a59cc79754fd9ff3f41b7ee2eb21da85988548\",\n                            \"lessThan\": \"34b1bb33a025787e05f966e74de18cd36276f801\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"30a59cc79754fd9ff3f41b7ee2eb21da85988548\",\n                            \"lessThan\": \"a6e11a81da3420fd37f1518d4f238c4d5784086e\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"30a59cc79754fd9ff3f41b7ee2eb21da85988548\",\n                            \"lessThan\": \"52fb1756ea1d2759dfef2d86245be00b05dac3a2\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"fe5b68fdcec0f3d97a32f4c4acfef59cf90718f7\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"6.11.6\",\n                            \"lessThan\": \"6.12\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\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\": \"6.12\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.12\",\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":[{"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/34b1bb33a025787e05f966e74de18cd36276f801","https://git.kernel.org/stable/c/a6e11a81da3420fd37f1518d4f238c4d5784086e","https://git.kernel.org/stable/c/52fb1756ea1d2759dfef2d86245be00b05dac3a2"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-92518","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-92518","identifiers":["CVE-2026-92518"]},"retained":false,"historicalAffected":[]}],"coverage":[]}