CVE-2026-53217
HighCVSS 8.6Exploitation Probability (EPSS)
Low risk32th percentile — higher than 32% of all known CVEs
Summary
In the Linux kernel, the mvpp2 driver had a DMA synchronization bug for received packets. The CPU sync function started at an incorrect offset, missing data at the packet tail and syncing unused headroom. On non-coherent DMA systems, this can cause the CPU to read stale cache contents.
Risk Assessment
The organization may experience network packet processing errors, including packet loss or data corruption, affecting communication reliability and potentially causing issues with network applications.
Recommendation
Immediately update the Linux kernel to a version containing the fix (commit addressing the issue). Check for the patch availability for your distribution and apply it after testing.
Original NVD description (English source)
In the Linux kernel, the following vulnerability has been resolved: net: mvpp2: sync RX data at the hardware packet offset mvpp2 programs the RX queue packet offset, so hardware writes received data at dma_addr + MVPP2_SKB_HEADROOM. The current CPU sync starts at dma_addr and only covers rx_bytes + MVPP2_MH_SIZE bytes, which syncs the unused headroom and misses the same number of bytes at the packet tail. On non-coherent DMA systems this can leave the CPU reading stale cache contents for the end of the received frame. Use dma_sync_single_range_for_cpu() with MVPP2_SKB_HEADROOM as the range offset so the sync covers the Marvell header and packet data actually written by hardware.