{"apiVersion":"1.0","identifier":"CVE-2026-99097","description":"In the Linux kernel, the following vulnerability has been resolved: tee: shm: reject zero-sized allocations in tee_dyn_shm_alloc_helper() tee_dyn_shm_alloc_helper() derives nr_pages from a caller-supplied size and passes it to alloc_pages_exact() without checking it. For size == 0 nr_pages is 0, and alloc_pages_exact(0) calls get_order(0), which is documented as undefined and returns BITS_PER_LONG - PAGE_SHIFT. The page allocator then trips its order > MAX_PAGE_ORDER warning and fails the allocation; on a panic_on_warn kernel that ends the boot. This can be triggered by TEE_IOC_SHM_ALLOC with struct tee_ioctl_shm_alloc_data where size is 0. Reject a zero page count, as register_shm_helper() already does for the register path.","publishedAt":"2026-10-26T15:16:48","lastModifiedAt":"2026-10-26T15:16:48","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-99097","cvssScore":null,"cvssVector":null,"epssProbability":0.00164,"riskScore":null,"affectedProduct":"Linux kernel","affectedVersions":"unknown","vulnerabilityType":"Kernel","operatingSystems":[],"links":{"self":"https://www.redsauce.net/api/cves/CVE-2026-99097","webPages":{"es":"https://www.redsauce.net/es/cves/CVE-2026-99097","en":"https://www.redsauce.net/en/cves/CVE-2026-99097","fr":"https://www.redsauce.net/fr/cves/CVE-2026-99097","pt":"https://www.redsauce.net/pt/cves/CVE-2026-99097","de":"https://www.redsauce.net/de/cves/CVE-2026-99097","sk":"https://www.redsauce.net/sk/cves/CVE-2026-99097","el":"https://www.redsauce.net/el/cves/CVE-2026-99097"},"source":"https://nvd.nist.gov/vuln/detail/CVE-2026-99097"}}