CVE-2026-53217

Summary

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.

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxe1921168bbd4810de4197446e52f652cd0dd9541 < 60412bdd1b2576659eac23a23d2d9ff96228a643affected
LinuxLinuxe1921168bbd4810de4197446e52f652cd0dd9541 < 19f8bc139e9b149d1e5bf75ae761d1bb8dd3e7d8affected
LinuxLinuxe1921168bbd4810de4197446e52f652cd0dd9541 < a3ad9b5767c89531fc7dae951b51b0933dcf7051affected
LinuxLinuxe1921168bbd4810de4197446e52f652cd0dd9541 < bede0f481b9137d73d1cf64309cbe4b94818a5d6affected
LinuxLinuxe1921168bbd4810de4197446e52f652cd0dd9541 < 23548007b3c66d628fc7d6b80d1e23be04ea10d9affected
LinuxLinuxe1921168bbd4810de4197446e52f652cd0dd9541 < a13199fa224e9f776f4005d5037df03aa9ea8f37affected
LinuxLinuxe1921168bbd4810de4197446e52f652cd0dd9541 < e302206ad84a407a7e5f3f6fe767ff5efaace689affected
LinuxLinuxe1921168bbd4810de4197446e52f652cd0dd9541 < 180235600934bef6add3be637c296d6cf3272e67affected
LinuxLinux5.5affected
LinuxLinux0 < 5.5unaffected
LinuxLinux5.10.259 <= 5.10.*unaffected
LinuxLinux5.15.210 <= 5.15.*unaffected
LinuxLinux6.1.176 <= 6.1.*unaffected
LinuxLinux6.6.143 <= 6.6.*unaffected
LinuxLinux6.12.94 <= 6.12.*unaffected
LinuxLinux6.18.36 <= 6.18.*unaffected
LinuxLinux7.0.13 <= 7.0.*unaffected
LinuxLinux7.1 <= *unaffected

Weaknesses

References