CVE-2026-45908
Description
A flaw was found in the Linux kernel's accel/amdxdna component. The amdxdna_ubuf_map function allocates memory for scatter-gather (SG) and internal SG table structures. However, it fails to free this allocated memory if subsequent operations, such as sg_alloc_table_from_pages or dma_map_sgtable, encounter an error. This memory leak can be triggered by a local attacker, potentially leading to system instability or a Denial of Service (DoS) due to excessive memory consumption.
Understanding the Weakness (CWE)
Availability
Technical Impact: DoS: Resource Consumption (Other); DoS: Resource Consumption (Memory); DoS: Resource Consumption (CPU)
An attacker that can influence the allocation of resources that are not properly released could deplete the available resource pool and prevent all other processes from accessing the same type of resource. Frequently-affected resources include memory, CPU, disk space, power or battery, etc.
Frequently Asked Questions
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