Description
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.
CVSS breakdown
CVSS 3.1
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
Low
Availability
Low
Affected products
- Linux / Linuxe1921168bbd4810de4197446e52f652cd0dd9541 – 60412bdd1b2576659eac23a23d2d9ff96228a643
- Linux / Linuxe1921168bbd4810de4197446e52f652cd0dd9541 – 19f8bc139e9b149d1e5bf75ae761d1bb8dd3e7d8
- Linux / Linuxe1921168bbd4810de4197446e52f652cd0dd9541 – a3ad9b5767c89531fc7dae951b51b0933dcf7051
- Linux / Linuxe1921168bbd4810de4197446e52f652cd0dd9541 – bede0f481b9137d73d1cf64309cbe4b94818a5d6
- Linux / Linuxe1921168bbd4810de4197446e52f652cd0dd9541 – 23548007b3c66d628fc7d6b80d1e23be04ea10d9
- Linux / Linuxe1921168bbd4810de4197446e52f652cd0dd9541 – a13199fa224e9f776f4005d5037df03aa9ea8f37
- Linux / Linuxe1921168bbd4810de4197446e52f652cd0dd9541 – e302206ad84a407a7e5f3f6fe767ff5efaace689
- Linux / Linuxe1921168bbd4810de4197446e52f652cd0dd9541 – 180235600934bef6add3be637c296d6cf3272e67
- Linux / Linux5.5 – 5.5
- Linux / Linux0 – 5.5
- Linux / Linux5.10.259 – 5.10.*
- Linux / Linux5.15.210 – 5.15.*
- Linux / Linux6.1.176 – 6.1.*
- Linux / Linux6.6.143 – 6.6.*
- Linux / Linux6.12.94 – 6.12.*
- Linux / Linux6.18.36 – 6.18.*
- Linux / Linux7.0.13 – 7.0.*
- Linux / Linux7.1 – *
References
- MISChttps://git.kernel.org/stable/c/60412bdd1b2576659eac23a23d2d9ff96228a643
- MISChttps://git.kernel.org/stable/c/19f8bc139e9b149d1e5bf75ae761d1bb8dd3e7d8
- MISChttps://git.kernel.org/stable/c/a3ad9b5767c89531fc7dae951b51b0933dcf7051
- MISChttps://git.kernel.org/stable/c/bede0f481b9137d73d1cf64309cbe4b94818a5d6
- MISChttps://git.kernel.org/stable/c/23548007b3c66d628fc7d6b80d1e23be04ea10d9
- MISChttps://git.kernel.org/stable/c/a13199fa224e9f776f4005d5037df03aa9ea8f37
- MISChttps://git.kernel.org/stable/c/e302206ad84a407a7e5f3f6fe767ff5efaace689
- MISChttps://git.kernel.org/stable/c/180235600934bef6add3be637c296d6cf3272e67