{"api_version":"1","generated_at":"2026-08-28T23:59:20+00:00","cve":"CVE-2026-80687","urls":{"html":"https://cve.report/CVE-2026-80687","api":"https://cve.report/api/cve/CVE-2026-80687.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-80687","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-80687"},"summary":{"title":"iommufd/viommu: Release the igroup lock on the vdevice_size error path","description":"In the Linux kernel, the following vulnerability has been resolved:\n\niommufd/viommu: Release the igroup lock on the vdevice_size error path\n\niommufd_vdevice_alloc_ioctl() takes idev->igroup->lock, then validates the\ndriver's vdevice_size against the core structure size with a WARN_ON_ONCE.\nOn failure that guard jumps to out_put_idev, below out_unlock_igroup, so it\nskips the mutex_unlock(), leaving the igroup lock held and deadlocking the\nnext vDEVICE operation on that group.\n\nJump to out_unlock_igroup instead.","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/ca9e49e1c8931a4e6e743a1f1d2e7f977f774b86","name":"https://git.kernel.org/stable/c/ca9e49e1c8931a4e6e743a1f1d2e7f977f774b86","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/294b464b2be7e57872864cb6936e1d9c7294f89d","name":"https://git.kernel.org/stable/c/294b464b2be7e57872864cb6936e1d9c7294f89d","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/339bd11591593ab7ce88136ab7fd01ef3813b724","name":"https://git.kernel.org/stable/c/339bd11591593ab7ce88136ab7fd01ef3813b724","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-80687","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-80687","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected ed42eee797ff3dc889ade63c1dd7c4f430699e23 294b464b2be7e57872864cb6936e1d9c7294f89d git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected ed42eee797ff3dc889ade63c1dd7c4f430699e23 ca9e49e1c8931a4e6e743a1f1d2e7f977f774b86 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected ed42eee797ff3dc889ade63c1dd7c4f430699e23 339bd11591593ab7ce88136ab7fd01ef3813b724 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.17","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.17 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":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/iommu/iommufd/viommu.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"294b464b2be7e57872864cb6936e1d9c7294f89d","status":"affected","version":"ed42eee797ff3dc889ade63c1dd7c4f430699e23","versionType":"git"},{"lessThan":"ca9e49e1c8931a4e6e743a1f1d2e7f977f774b86","status":"affected","version":"ed42eee797ff3dc889ade63c1dd7c4f430699e23","versionType":"git"},{"lessThan":"339bd11591593ab7ce88136ab7fd01ef3813b724","status":"affected","version":"ed42eee797ff3dc889ade63c1dd7c4f430699e23","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/iommu/iommufd/viommu.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.17"},{"lessThan":"6.17","status":"unaffected","version":"0","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":"6.18.44","versionStartIncluding":"6.17","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1.8","versionStartIncluding":"6.17","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2","versionStartIncluding":"6.17","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\niommufd/viommu: Release the igroup lock on the vdevice_size error path\n\niommufd_vdevice_alloc_ioctl() takes idev->igroup->lock, then validates the\ndriver's vdevice_size against the core structure size with a WARN_ON_ONCE.\nOn failure that guard jumps to out_put_idev, below out_unlock_igroup, so it\nskips the mutex_unlock(), leaving the igroup lock held and deadlocking the\nnext vDEVICE operation on that group.\n\nJump to out_unlock_igroup instead."}],"providerMetadata":{"dateUpdated":"2026-08-28T06:52:52.512Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/294b464b2be7e57872864cb6936e1d9c7294f89d"},{"url":"https://git.kernel.org/stable/c/ca9e49e1c8931a4e6e743a1f1d2e7f977f774b86"},{"url":"https://git.kernel.org/stable/c/339bd11591593ab7ce88136ab7fd01ef3813b724"}],"title":"iommufd/viommu: Release the igroup lock on the vdevice_size error path","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-80687","datePublished":"2026-08-28T06:52:52.512Z","dateReserved":"2026-08-26T14:34:25.784Z","dateUpdated":"2026-08-28T06:52:52.512Z","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":"80687","Ordinal":"1","Title":"iommufd/viommu: Release the igroup lock on the vdevice_size erro","CVE":"CVE-2026-80687","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"80687","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\niommufd/viommu: Release the igroup lock on the vdevice_size error path\n\niommufd_vdevice_alloc_ioctl() takes idev->igroup->lock, then validates the\ndriver's vdevice_size against the core structure size with a WARN_ON_ONCE.\nOn failure that guard jumps to out_put_idev, below out_unlock_igroup, so it\nskips the mutex_unlock(), leaving the igroup lock held and deadlocking the\nnext vDEVICE operation on that group.\n\nJump to out_unlock_igroup instead.","Type":"Description","Title":"iommufd/viommu: Release the igroup lock on the vdevice_size erro"}]}}}