{"id":"CVE-2026-98003","summary":"iommu/amd: Do not reallocate GA log buffers on resume","details":"In the Linux kernel, the following vulnerability has been resolved:\n\niommu/amd: Do not reallocate GA log buffers on resume\n\nCommit c5e1a1eb9279 (\"iommu/amd: Simplify and Consolidate Virtual APIC\n(AVIC) Enablement\") moved the GA log allocation from iommu_init_pci()\nto enable_iommus_vapic(), which is called on every resume.\n\niommu_init_ga_log() assigns iommu-\u003ega_log and iommu-\u003ega_log_tail\nunconditionally. Each resume therefore replaces the boot-time pointers\nand leaks both old allocations. The function also uses GFP_KERNEL from a\nsyscore resume callback, where interrupts are disabled and the non-boot\nCPUs are offline.\n\nReturn early if both buffers are already allocated. Clear the pointers\nin free_ga_log() so a partial allocation failure cannot leave ga_log\ndangling.","modified":"2026-09-26T03:48:31.073970954Z","published":"2026-09-25T10:23:30.522Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98003.json"},"references":[{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"},{"type":"WEB","url":"https://git.kernel.org/stable/c/00a7dd64888d6dd72110b40e2824a088cf7b7386"},{"type":"WEB","url":"https://git.kernel.org/stable/c/94458b80d3b203c1c9e2c98aa7319b7713e006c0"},{"type":"WEB","url":"https://git.kernel.org/stable/c/b6be275d19cee01f8f1f08a2ff18337103d05d40"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98003.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98003"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"c5e1a1eb9279fdb28d47ca2a4493a4c53b7d6a0b"},{"fixed":"94458b80d3b203c1c9e2c98aa7319b7713e006c0"},{"fixed":"b6be275d19cee01f8f1f08a2ff18337103d05d40"},{"fixed":"00a7dd64888d6dd72110b40e2824a088cf7b7386"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-98003.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.0.0"},{"fixed":"6.18.53"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.2.7"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-98003.json"}}],"schema_version":"1.9.0"}