{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-80689","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-08-26T14:34:25.785Z","datePublished":"2026-08-28T06:52:53.724Z","dateUpdated":"2026-09-14T11:58:50.409Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-09-14T11:58:50.409Z"},"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()."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/trace/trace_mmiotrace.c"],"versions":[{"version":"f984b51e0779a6dd30feedc41404013ca54e5d05","lessThan":"dc1b1a057b3bb901f83433700e604fe0ae67c5f2","status":"affected","versionType":"git"},{"version":"f984b51e0779a6dd30feedc41404013ca54e5d05","lessThan":"6aee2d478545c089dd5d055d3c9f0c7ea034fb80","status":"affected","versionType":"git"},{"version":"f984b51e0779a6dd30feedc41404013ca54e5d05","lessThan":"4e4ab09db7899d7f2d2293a18adf0fa200a27e73","status":"affected","versionType":"git"},{"version":"f984b51e0779a6dd30feedc41404013ca54e5d05","lessThan":"2df964d141270c40f07547b0c2e0a51e2573d46d","status":"affected","versionType":"git"},{"version":"f984b51e0779a6dd30feedc41404013ca54e5d05","lessThan":"876014b4eeb927146430e7591cf959a7ceb8d64a","status":"affected","versionType":"git"},{"version":"f984b51e0779a6dd30feedc41404013ca54e5d05","lessThan":"a20a0010eb6485f60cd64e15ebc85a4bd388642e","status":"affected","versionType":"git"},{"version":"f984b51e0779a6dd30feedc41404013ca54e5d05","lessThan":"60234845142fddb27db89ebc00a65178421fb3a4","status":"affected","versionType":"git"},{"version":"f984b51e0779a6dd30feedc41404013ca54e5d05","lessThan":"12b80cdbc54cf615b4717a4e8180063408091ea2","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/trace/trace_mmiotrace.c"],"versions":[{"version":"2.6.27","status":"affected"},{"version":"0","lessThan":"2.6.27","status":"unaffected","versionType":"semver"},{"version":"5.10.270","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.221","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.188","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.157","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.103","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.44","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.1.8","lessThanOrEqual":"7.1.*","status":"unaffected","versionType":"semver"},{"version":"7.2","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.27","versionEndExcluding":"5.10.270"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.27","versionEndExcluding":"5.15.221"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.27","versionEndExcluding":"6.1.188"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.27","versionEndExcluding":"6.6.157"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.27","versionEndExcluding":"6.12.103"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.27","versionEndExcluding":"6.18.44"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.27","versionEndExcluding":"7.1.8"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.27","versionEndExcluding":"7.2"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/dc1b1a057b3bb901f83433700e604fe0ae67c5f2"},{"url":"https://git.kernel.org/stable/c/6aee2d478545c089dd5d055d3c9f0c7ea034fb80"},{"url":"https://git.kernel.org/stable/c/4e4ab09db7899d7f2d2293a18adf0fa200a27e73"},{"url":"https://git.kernel.org/stable/c/2df964d141270c40f07547b0c2e0a51e2573d46d"},{"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"}}}}