{"id":"CVE-2026-80687","summary":"iommufd/viommu: Release the igroup lock on the vdevice_size error path","details":"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-\u003eigroup-\u003elock, 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.","modified":"2026-08-30T03:48:21.437568569Z","published":"2026-08-28T06:52:52.512Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80687.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/294b464b2be7e57872864cb6936e1d9c7294f89d"},{"type":"WEB","url":"https://git.kernel.org/stable/c/339bd11591593ab7ce88136ab7fd01ef3813b724"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ca9e49e1c8931a4e6e743a1f1d2e7f977f774b86"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80687.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-80687"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"ed42eee797ff3dc889ade63c1dd7c4f430699e23"},{"fixed":"294b464b2be7e57872864cb6936e1d9c7294f89d"},{"fixed":"ca9e49e1c8931a4e6e743a1f1d2e7f977f774b86"},{"fixed":"339bd11591593ab7ce88136ab7fd01ef3813b724"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-80687.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.17.0"},{"fixed":"6.18.44"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.1.8"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-80687.json"}}],"schema_version":"1.9.0"}