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ram_core: fix incorrect success return when vmap() fails","CVE":"CVE-2026-43124","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"43124","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\npstore: ram_core: fix incorrect success return when vmap() fails\n\nIn persistent_ram_vmap(), vmap() may return NULL on failure.\n\nIf offset is non-zero, adding offset_in_page(start) causes the function\nto return a non-NULL pointer even though the mapping failed.\npersistent_ram_buffer_map() therefore incorrectly returns success.\n\nSubsequent access to prz->buffer may dereference an invalid address\nand cause crashes.\n\nAdd proper NULL checking for vmap() failures.","Type":"Description","Title":"pstore: ram_core: fix incorrect success return when vmap() fails"}]}}}