CVE-2026-53217: net: mvpp2: sync RX data at the hardware packet offset
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 dmaaddr + MVPP2SKBHEADROOM. The current CPU sync starts at dmaaddr and only covers rxbytes + MVPP2MHSIZE 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 dmasyncsinglerangeforcpu() with MVPP2SKBHEADROOM as the range offset so the sync covers the Marvell header and packet data actually written by hardware.
Affected Software
Remediation
Event History
Frequently Asked Questions
What is the severity of CVE-2026-53217?
The severity of CVE-2026-53217 is rated as high with a score of 8.6.
How do I fix CVE-2026-53217?
To fix CVE-2026-53217, update the Linux kernel to the latest patched version addressing the vulnerability.
What systems are affected by CVE-2026-53217?
CVE-2026-53217 affects systems running the Linux kernel that includes mvpp2, as well as specific versions of the Microsoft azl3 kernel.
What is the impact of CVE-2026-53217?
The impact of CVE-2026-53217 includes potential data corruption or unexpected behavior in the RX data handling in affected systems.
When was CVE-2026-53217 published?
CVE-2026-53217 was published on June 25, 2026.