{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-89457","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-09-11T19:38:34.707Z","datePublished":"2026-09-11T19:43:20.701Z","dateUpdated":"2026-09-14T11:59:57.812Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-09-14T11:59:57.812Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ns390/dasd: Guard sysfs discipline callbacks against unallocated private data\n\nSeveral sysfs show/store handlers call a discipline callback that\ndereferences device->private, either directly or through the\nDASD_DEFINE_ATTR() macro. During dasd_generic_set_online() the discipline\nis assigned before check_device() allocates device->private, so an\nunprivileged read of one of these world-readable attributes in that window\ndereferences a NULL pointer and panics.\n\nGuard the dereference inside each callback that actually touches\ndevice->private."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/s390/block/dasd_eckd.c"],"versions":[{"version":"c729696bcf8b23450043dd9c9972c15e53419ae4","lessThan":"644b666c202cce12ccfcf9ded67089b18f4f7659","status":"affected","versionType":"git"},{"version":"c729696bcf8b23450043dd9c9972c15e53419ae4","lessThan":"4a042d8e5f34282577ece50515cea8bb1246914d","status":"affected","versionType":"git"},{"version":"c729696bcf8b23450043dd9c9972c15e53419ae4","lessThan":"bd8b4572528f9604a13bf3c7c2a167f5cf222f72","status":"affected","versionType":"git"},{"version":"c729696bcf8b23450043dd9c9972c15e53419ae4","lessThan":"57db27ccc162afe0726cffec0ae62e410ed2d0e9","status":"affected","versionType":"git"},{"version":"c729696bcf8b23450043dd9c9972c15e53419ae4","lessThan":"536407b272402af679155910d7fdeeb4834eefb9","status":"affected","versionType":"git"},{"version":"c729696bcf8b23450043dd9c9972c15e53419ae4","lessThan":"6452c13646af7c13d7f6668b6690cfb2427e7f7b","status":"affected","versionType":"git"},{"version":"c729696bcf8b23450043dd9c9972c15e53419ae4","lessThan":"449f3bada7a9fad8b8cdf4bb20baf27ee9ca56c5","status":"affected","versionType":"git"},{"version":"c729696bcf8b23450043dd9c9972c15e53419ae4","lessThan":"2a1780f9fc2493bd34c418a0be6fc58943afcecf","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/s390/block/dasd_eckd.c"],"versions":[{"version":"5.3","status":"affected"},{"version":"0","lessThan":"5.3","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":"6.12.109","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.50","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.2.4","lessThanOrEqual":"7.2.*","status":"unaffected","versionType":"semver"},{"version":"7.3-rc1","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":"5.3","versionEndExcluding":"5.10.270"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.3","versionEndExcluding":"5.15.221"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.3","versionEndExcluding":"6.1.188"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.3","versionEndExcluding":"6.6.157"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.3","versionEndExcluding":"6.12.109"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.3","versionEndExcluding":"6.18.50"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.3","versionEndExcluding":"7.2.4"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.3","versionEndExcluding":"7.3-rc1"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/644b666c202cce12ccfcf9ded67089b18f4f7659"},{"url":"https://git.kernel.org/stable/c/4a042d8e5f34282577ece50515cea8bb1246914d"},{"url":"https://git.kernel.org/stable/c/bd8b4572528f9604a13bf3c7c2a167f5cf222f72"},{"url":"https://git.kernel.org/stable/c/57db27ccc162afe0726cffec0ae62e410ed2d0e9"},{"url":"https://git.kernel.org/stable/c/536407b272402af679155910d7fdeeb4834eefb9"},{"url":"https://git.kernel.org/stable/c/6452c13646af7c13d7f6668b6690cfb2427e7f7b"},{"url":"https://git.kernel.org/stable/c/449f3bada7a9fad8b8cdf4bb20baf27ee9ca56c5"},{"url":"https://git.kernel.org/stable/c/2a1780f9fc2493bd34c418a0be6fc58943afcecf"}],"title":"s390/dasd: Guard sysfs discipline callbacks against unallocated private data","x_generator":{"engine":"bippy-1.2.0"}}}}