{"id":"CVE-2026-98669","state":"PUBLISHED","title":"iio: buffer: serialize buffer teardown with mode claims","description":"In the Linux kernel, the following vulnerability has been resolved:\n\niio: buffer: serialize buffer teardown with mode claims\n\nBuffer-mode claims hold mlock to guarantee that the device remains in\nbuffer mode until the claim is released. Normal buffer updates take\ninfo_exist_lock followed by mlock in iio_update_buffers().\n\nHowever, iio_device_unregister() disables and deactivates all buffers\nwithout taking mlock. This can invalidate buffer state, including\nactive_scan_mask, while a buffer-mode claim is held.\n\nTake mlock in iio_disable_all_buffers() so that unregister honors the\nmode-claim lifetime guarantee. The info_exist_lock -> mlock ordering\nmatches iio_update_buffers().","publishedAt":"2026-10-18T15:45:05.836Z","updatedAt":"2026-10-30T12:38:36.653Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"a9c471892d75847671a246619c2148578f22bbc6","status":"affected","lessThan":"261f54966ebf45ced5fe5e1fe5119c6c44e140ab","versionType":"git"},{"version":"7bca0af538a49dacb1470f233be0676bdc09605b","status":"affected","lessThan":"cebbecb26d22368440c4779f8275d790cf347177","versionType":"git"},{"version":"0a8565425afd8ba0e1a0ea73e21da119ee6dacea","status":"affected","lessThan":"6a728408ff522b749c2a3c7e68f44e861fa0dbfb","versionType":"git"},{"version":"0a8565425afd8ba0e1a0ea73e21da119ee6dacea","status":"affected","lessThan":"89f3852a28fcf7bab599280cb082baa0675536db","versionType":"git"},{"version":"0a8565425afd8ba0e1a0ea73e21da119ee6dacea","status":"affected","lessThan":"b466db9e68b4741af85f6c017e2bb0a2f025053f","versionType":"git"},{"version":"0a8565425afd8ba0e1a0ea73e21da119ee6dacea","status":"affected","lessThan":"e63188d77e10c0951bf67da6c295f768fd1abf4b","versionType":"git"},{"version":"0a8565425afd8ba0e1a0ea73e21da119ee6dacea","status":"affected","lessThan":"84bb0fc46ccf6a545b8fdf57cda83770186ed8dd","versionType":"git"},{"version":"5.15.137","status":"affected","lessThan":"5.15.224","versionType":"semver"},{"version":"6.1.60","status":"affected","lessThan":"6.1.191","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/iio/industrialio-buffer.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.2","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.2","versionType":"semver"},{"version":"5.15.224","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.191","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.160","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.113","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.56","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.10","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/iio/industrialio-buffer.c"]}],"references":["https://git.kernel.org/stable/c/261f54966ebf45ced5fe5e1fe5119c6c44e140ab","https://git.kernel.org/stable/c/cebbecb26d22368440c4779f8275d790cf347177","https://git.kernel.org/stable/c/6a728408ff522b749c2a3c7e68f44e861fa0dbfb","https://git.kernel.org/stable/c/89f3852a28fcf7bab599280cb082baa0675536db","https://git.kernel.org/stable/c/b466db9e68b4741af85f6c017e2bb0a2f025053f","https://git.kernel.org/stable/c/e63188d77e10c0951bf67da6c295f768fd1abf4b","https://git.kernel.org/stable/c/84bb0fc46ccf6a545b8fdf57cda83770186ed8dd"],"weaknesses":[],"ingestedAt":"2026-10-30T12:58:04.520Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/98xxx/CVE-2026-98669.json","commit":"1f312381e38164a43607eebab851b151dd16861e","baselineCommit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-98669","state":"PUBLISHED","datePublished":"2026-10-18T15:45:05.836Z","dateUpdated":"2026-10-30T12:38:36.653Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-09-25T10:25:14.363Z"},"containers":{"cna":{"title":"iio: buffer: serialize buffer teardown with mode claims","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\niio: buffer: serialize buffer teardown with mode claims\n\nBuffer-mode claims hold mlock to guarantee that the device remains in\nbuffer mode until the claim is released. Normal buffer updates take\ninfo_exist_lock followed by mlock in iio_update_buffers().\n\nHowever, iio_device_unregister() disables and deactivates all buffers\nwithout taking mlock. This can invalidate buffer state, including\nactive_scan_mask, while a buffer-mode claim is held.\n\nTake mlock in iio_disable_all_buffers() so that unregister honors the\nmode-claim lifetime guarantee. The info_exist_lock -> mlock ordering\nmatches iio_update_buffers()."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"a9c471892d75847671a246619c2148578f22bbc6","status":"affected","lessThan":"261f54966ebf45ced5fe5e1fe5119c6c44e140ab","versionType":"git"},{"version":"7bca0af538a49dacb1470f233be0676bdc09605b","status":"affected","lessThan":"cebbecb26d22368440c4779f8275d790cf347177","versionType":"git"},{"version":"0a8565425afd8ba0e1a0ea73e21da119ee6dacea","status":"affected","lessThan":"6a728408ff522b749c2a3c7e68f44e861fa0dbfb","versionType":"git"},{"version":"0a8565425afd8ba0e1a0ea73e21da119ee6dacea","status":"affected","lessThan":"89f3852a28fcf7bab599280cb082baa0675536db","versionType":"git"},{"version":"0a8565425afd8ba0e1a0ea73e21da119ee6dacea","status":"affected","lessThan":"b466db9e68b4741af85f6c017e2bb0a2f025053f","versionType":"git"},{"version":"0a8565425afd8ba0e1a0ea73e21da119ee6dacea","status":"affected","lessThan":"e63188d77e10c0951bf67da6c295f768fd1abf4b","versionType":"git"},{"version":"0a8565425afd8ba0e1a0ea73e21da119ee6dacea","status":"affected","lessThan":"84bb0fc46ccf6a545b8fdf57cda83770186ed8dd","versionType":"git"},{"version":"5.15.137","status":"affected","lessThan":"5.15.224","versionType":"semver"},{"version":"6.1.60","status":"affected","lessThan":"6.1.191","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/iio/industrialio-buffer.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.2","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.2","versionType":"semver"},{"version":"5.15.224","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.191","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.160","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.113","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.56","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.10","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/iio/industrialio-buffer.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/261f54966ebf45ced5fe5e1fe5119c6c44e140ab"},{"url":"https://git.kernel.org/stable/c/cebbecb26d22368440c4779f8275d790cf347177"},{"url":"https://git.kernel.org/stable/c/6a728408ff522b749c2a3c7e68f44e861fa0dbfb"},{"url":"https://git.kernel.org/stable/c/89f3852a28fcf7bab599280cb082baa0675536db"},{"url":"https://git.kernel.org/stable/c/b466db9e68b4741af85f6c017e2bb0a2f025053f"},{"url":"https://git.kernel.org/stable/c/e63188d77e10c0951bf67da6c295f768fd1abf4b"},{"url":"https://git.kernel.org/stable/c/84bb0fc46ccf6a545b8fdf57cda83770186ed8dd"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-30T12:38:36.653Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15.137","versionEndExcluding":"5.15.224"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.1.60","versionEndExcluding":"6.1.191"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.2","versionEndExcluding":"6.6.160"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.2","versionEndExcluding":"6.12.113"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.2","versionEndExcluding":"6.18.56"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.2","versionEndExcluding":"7.2.10"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.2","versionEndExcluding":"7.3"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}