{"api_version":"1","generated_at":"2026-08-29T17:55:27+00:00","cve":"CVE-2026-80689","urls":{"html":"https://cve.report/CVE-2026-80689","api":"https://cve.report/api/cve/CVE-2026-80689.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-80689","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-80689"},"summary":{"title":"tracing/mmiotrace: Add NULL check for mmio_trace_array in logging functions","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ntracing/mmiotrace: Add NULL check for mmio_trace_array in logging functions\n\nmmio_trace_rw() and mmio_trace_mapping() retrieve mmio_trace_array into\ntr and pass it to __trace_mmiotrace_rw() and __trace_mmiotrace_map().\nIf these functions are invoked while mmio_trace_array is NULL (e.g. before\ninitialization or after disabled), accessing tr->array_buffer.buffer will\nresult in a NULL pointer dereference crash.\n\nFix this by adding an explicit NULL check for tr at the beginning of\n__trace_mmiotrace_rw() and __trace_mmiotrace_map().","state":"PUBLISHED","assigner":"Linux","published_at":"2026-08-28 08:16:54","updated_at":"2026-08-28 08:16:54"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/876014b4eeb927146430e7591cf959a7ceb8d64a","name":"https://git.kernel.org/stable/c/876014b4eeb927146430e7591cf959a7ceb8d64a","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/60234845142fddb27db89ebc00a65178421fb3a4","name":"https://git.kernel.org/stable/c/60234845142fddb27db89ebc00a65178421fb3a4","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/12b80cdbc54cf615b4717a4e8180063408091ea2","name":"https://git.kernel.org/stable/c/12b80cdbc54cf615b4717a4e8180063408091ea2","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/a20a0010eb6485f60cd64e15ebc85a4bd388642e","name":"https://git.kernel.org/stable/c/a20a0010eb6485f60cd64e15ebc85a4bd388642e","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-80689","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-80689","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected f984b51e0779a6dd30feedc41404013ca54e5d05 876014b4eeb927146430e7591cf959a7ceb8d64a git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected f984b51e0779a6dd30feedc41404013ca54e5d05 a20a0010eb6485f60cd64e15ebc85a4bd388642e git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected f984b51e0779a6dd30feedc41404013ca54e5d05 60234845142fddb27db89ebc00a65178421fb3a4 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected f984b51e0779a6dd30feedc41404013ca54e5d05 12b80cdbc54cf615b4717a4e8180063408091ea2 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 2.6.27","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 2.6.27 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.103 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.44 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1.8 7.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"80689","cve":"CVE-2026-80689","epss":"0.001680000","percentile":"0.062670000","score_date":"2026-08-28","updated_at":"2026-08-29 00:12:17"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["kernel/trace/trace_mmiotrace.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"876014b4eeb927146430e7591cf959a7ceb8d64a","status":"affected","version":"f984b51e0779a6dd30feedc41404013ca54e5d05","versionType":"git"},{"lessThan":"a20a0010eb6485f60cd64e15ebc85a4bd388642e","status":"affected","version":"f984b51e0779a6dd30feedc41404013ca54e5d05","versionType":"git"},{"lessThan":"60234845142fddb27db89ebc00a65178421fb3a4","status":"affected","version":"f984b51e0779a6dd30feedc41404013ca54e5d05","versionType":"git"},{"lessThan":"12b80cdbc54cf615b4717a4e8180063408091ea2","status":"affected","version":"f984b51e0779a6dd30feedc41404013ca54e5d05","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["kernel/trace/trace_mmiotrace.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"2.6.27"},{"lessThan":"2.6.27","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.103","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.44","versionType":"semver"},{"lessThanOrEqual":"7.1.*","status":"unaffected","version":"7.1.8","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.2","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.103","versionStartIncluding":"2.6.27","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.44","versionStartIncluding":"2.6.27","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1.8","versionStartIncluding":"2.6.27","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2","versionStartIncluding":"2.6.27","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ntracing/mmiotrace: Add NULL check for mmio_trace_array in logging functions\n\nmmio_trace_rw() and mmio_trace_mapping() retrieve mmio_trace_array into\ntr and pass it to __trace_mmiotrace_rw() and __trace_mmiotrace_map().\nIf these functions are invoked while mmio_trace_array is NULL (e.g. before\ninitialization or after disabled), accessing tr->array_buffer.buffer will\nresult in a NULL pointer dereference crash.\n\nFix this by adding an explicit NULL check for tr at the beginning of\n__trace_mmiotrace_rw() and __trace_mmiotrace_map()."}],"providerMetadata":{"dateUpdated":"2026-08-28T06:52:53.724Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/876014b4eeb927146430e7591cf959a7ceb8d64a"},{"url":"https://git.kernel.org/stable/c/a20a0010eb6485f60cd64e15ebc85a4bd388642e"},{"url":"https://git.kernel.org/stable/c/60234845142fddb27db89ebc00a65178421fb3a4"},{"url":"https://git.kernel.org/stable/c/12b80cdbc54cf615b4717a4e8180063408091ea2"}],"title":"tracing/mmiotrace: Add NULL check for mmio_trace_array in logging functions","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-80689","datePublished":"2026-08-28T06:52:53.724Z","dateReserved":"2026-08-26T14:34:25.785Z","dateUpdated":"2026-08-28T06:52:53.724Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-08-28 08:16:54","lastModifiedDate":"2026-08-28 08:16:54","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"80689","Ordinal":"1","Title":"tracing/mmiotrace: Add NULL check for mmio_trace_array in loggin","CVE":"CVE-2026-80689","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"80689","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\ntracing/mmiotrace: Add NULL check for mmio_trace_array in logging functions\n\nmmio_trace_rw() and mmio_trace_mapping() retrieve mmio_trace_array into\ntr and pass it to __trace_mmiotrace_rw() and __trace_mmiotrace_map().\nIf these functions are invoked while mmio_trace_array is NULL (e.g. before\ninitialization or after disabled), accessing tr->array_buffer.buffer will\nresult in a NULL pointer dereference crash.\n\nFix this by adding an explicit NULL check for tr at the beginning of\n__trace_mmiotrace_rw() and __trace_mmiotrace_map().","Type":"Description","Title":"tracing/mmiotrace: Add NULL check for mmio_trace_array in loggin"}]}}}