{"id":"CVE-2026-89446","state":"PUBLISHED","title":"iommufd: Release current IOAS on xa_store() failure","description":"In the Linux kernel, the following vulnerability has been resolved:\n\niommufd: Release current IOAS on xa_store() failure\n\niommufd_take_all_iova_rwsem() takes an object reference and the\niova_rwsem write lock before storing the IOAS in the temporary ioas_list\nxarray.\n\nIf xa_store() fails, the current IOAS has not been inserted into\nioas_list yet. iommufd_release_all_iova_rwsem() only unwinds IOAS\nobjects already present in that xarray, so it cannot release the current\nIOAS.\n\nRelease the current IOAS rwsem and object reference before unwinding the\npreviously stored entries.","publishedAt":"2026-09-11T19:43:13.431Z","updatedAt":"2026-10-19T08:46:55.828Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"051ae5aa73d782a8be2699a11e17c68f28b4e758","status":"affected","lessThan":"4c33d00ad9a911e87ea222986f732ce072e3aa26","versionType":"git"},{"version":"051ae5aa73d782a8be2699a11e17c68f28b4e758","status":"affected","lessThan":"07b4fe1367f076886c1c47a19c70936138325087","versionType":"git"},{"version":"051ae5aa73d782a8be2699a11e17c68f28b4e758","status":"affected","lessThan":"4ac2ce123824d5f885c868fa1f9f4d463141a2ba","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/iommu/iommufd/ioas.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.13","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.13","versionType":"semver"},{"version":"6.18.50","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.4","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/iommu/iommufd/ioas.c"]}],"references":["https://git.kernel.org/stable/c/4c33d00ad9a911e87ea222986f732ce072e3aa26","https://git.kernel.org/stable/c/07b4fe1367f076886c1c47a19c70936138325087","https://git.kernel.org/stable/c/4ac2ce123824d5f885c868fa1f9f4d463141a2ba"],"weaknesses":[],"ingestedAt":"2026-10-29T20:13:26.108Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/89xxx/CVE-2026-89446.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-89446","state":"PUBLISHED","datePublished":"2026-09-11T19:43:13.431Z","dateUpdated":"2026-10-19T08:46:55.828Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-09-11T19:38:34.704Z"},"containers":{"cna":{"title":"iommufd: Release current IOAS on xa_store() failure","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\niommufd: Release current IOAS on xa_store() failure\n\niommufd_take_all_iova_rwsem() takes an object reference and the\niova_rwsem write lock before storing the IOAS in the temporary ioas_list\nxarray.\n\nIf xa_store() fails, the current IOAS has not been inserted into\nioas_list yet. iommufd_release_all_iova_rwsem() only unwinds IOAS\nobjects already present in that xarray, so it cannot release the current\nIOAS.\n\nRelease the current IOAS rwsem and object reference before unwinding the\npreviously stored entries."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"051ae5aa73d782a8be2699a11e17c68f28b4e758","status":"affected","lessThan":"4c33d00ad9a911e87ea222986f732ce072e3aa26","versionType":"git"},{"version":"051ae5aa73d782a8be2699a11e17c68f28b4e758","status":"affected","lessThan":"07b4fe1367f076886c1c47a19c70936138325087","versionType":"git"},{"version":"051ae5aa73d782a8be2699a11e17c68f28b4e758","status":"affected","lessThan":"4ac2ce123824d5f885c868fa1f9f4d463141a2ba","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/iommu/iommufd/ioas.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.13","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.13","versionType":"semver"},{"version":"6.18.50","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.4","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/iommu/iommufd/ioas.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/4c33d00ad9a911e87ea222986f732ce072e3aa26"},{"url":"https://git.kernel.org/stable/c/07b4fe1367f076886c1c47a19c70936138325087"},{"url":"https://git.kernel.org/stable/c/4ac2ce123824d5f885c868fa1f9f4d463141a2ba"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-19T08:46:55.828Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.13","versionEndExcluding":"6.18.50"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.13","versionEndExcluding":"7.2.4"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.13","versionEndExcluding":"7.3"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}