{"api_version":"1","generated_at":"2026-09-18T04:52:18+00:00","cve":"CVE-2026-92518","urls":{"html":"https://cve.report/CVE-2026-92518","api":"https://cve.report/api/cve/CVE-2026-92518.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-92518","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-92518"},"summary":{"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":"PUBLISHED","assigner":"Linux","published_at":"2026-09-17 17:17:54","updated_at":"2026-09-17 17:17:54"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/52fb1756ea1d2759dfef2d86245be00b05dac3a2","name":"https://git.kernel.org/stable/c/52fb1756ea1d2759dfef2d86245be00b05dac3a2","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/a6e11a81da3420fd37f1518d4f238c4d5784086e","name":"https://git.kernel.org/stable/c/a6e11a81da3420fd37f1518d4f238c4d5784086e","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/34b1bb33a025787e05f966e74de18cd36276f801","name":"https://git.kernel.org/stable/c/34b1bb33a025787e05f966e74de18cd36276f801","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-92518","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-92518","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 30a59cc79754fd9ff3f41b7ee2eb21da85988548 34b1bb33a025787e05f966e74de18cd36276f801 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 30a59cc79754fd9ff3f41b7ee2eb21da85988548 a6e11a81da3420fd37f1518d4f238c4d5784086e git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 30a59cc79754fd9ff3f41b7ee2eb21da85988548 52fb1756ea1d2759dfef2d86245be00b05dac3a2 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected fe5b68fdcec0f3d97a32f4c4acfef59cf90718f7 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.11.6 6.12 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.12","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.52 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2.6 7.2.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.3-rc1 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["arch/riscv/net/bpf_jit_comp64.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"34b1bb33a025787e05f966e74de18cd36276f801","status":"affected","version":"30a59cc79754fd9ff3f41b7ee2eb21da85988548","versionType":"git"},{"lessThan":"a6e11a81da3420fd37f1518d4f238c4d5784086e","status":"affected","version":"30a59cc79754fd9ff3f41b7ee2eb21da85988548","versionType":"git"},{"lessThan":"52fb1756ea1d2759dfef2d86245be00b05dac3a2","status":"affected","version":"30a59cc79754fd9ff3f41b7ee2eb21da85988548","versionType":"git"},{"status":"affected","version":"fe5b68fdcec0f3d97a32f4c4acfef59cf90718f7","versionType":"git"},{"lessThan":"6.12","status":"affected","version":"6.11.6","versionType":"semver"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["arch/riscv/net/bpf_jit_comp64.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.12"},{"lessThan":"6.12","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.52","versionType":"semver"},{"lessThanOrEqual":"7.2.*","status":"unaffected","version":"7.2.6","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.3-rc1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.52","versionStartIncluding":"6.12","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.6","versionStartIncluding":"6.12","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3-rc1","versionStartIncluding":"6.12","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.11.6","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"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."}],"providerMetadata":{"dateUpdated":"2026-09-17T16:10:26.136Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/34b1bb33a025787e05f966e74de18cd36276f801"},{"url":"https://git.kernel.org/stable/c/a6e11a81da3420fd37f1518d4f238c4d5784086e"},{"url":"https://git.kernel.org/stable/c/52fb1756ea1d2759dfef2d86245be00b05dac3a2"}],"title":"riscv, bpf: Fix kernel stack corruption in tailcall with CFI","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-92518","datePublished":"2026-09-17T16:10:26.136Z","dateReserved":"2026-09-16T12:21:13.873Z","dateUpdated":"2026-09-17T16:10:26.136Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-09-17 17:17:54","lastModifiedDate":"2026-09-17 17:17:54","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"92518","Ordinal":"1","Title":"riscv, bpf: Fix kernel stack corruption in tailcall with CFI","CVE":"CVE-2026-92518","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"92518","Ordinal":"1","NoteData":"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.","Type":"Description","Title":"riscv, bpf: Fix kernel stack corruption in tailcall with CFI"}]}}}