CVE-2026-53217

net: mvpp2: sync RX data at the hardware packet offset

State: Published
Severity: 8.6 High
Published: Jun 25, 2026
Updated: Oct 19, 2026
Reserved: Jun 9, 2026

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.

Scores

CVSS	Score	Vector	Source
3.1	8.6 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L	Linux

Weaknesses

CWE-682 Incorrect Calculation

Affected Products

Product	Versions
LinuxLinux	e1921168bbd4810de4197446e52f652cd0dd9541 to before 60412bdd1b2576659eac23a23d2d9ff96228a643Affected e1921168bbd4810de4197446e52f652cd0dd9541 to before 19f8bc139e9b149d1e5bf75ae761d1bb8dd3e7d8Affected e1921168bbd4810de4197446e52f652cd0dd9541 to before a3ad9b5767c89531fc7dae951b51b0933dcf7051Affected e1921168bbd4810de4197446e52f652cd0dd9541 to before bede0f481b9137d73d1cf64309cbe4b94818a5d6Affected e1921168bbd4810de4197446e52f652cd0dd9541 to before 23548007b3c66d628fc7d6b80d1e23be04ea10d9Affected e1921168bbd4810de4197446e52f652cd0dd9541 to before a13199fa224e9f776f4005d5037df03aa9ea8f37Affected e1921168bbd4810de4197446e52f652cd0dd9541 to before e302206ad84a407a7e5f3f6fe767ff5efaace689Affected e1921168bbd4810de4197446e52f652cd0dd9541 to before 180235600934bef6add3be637c296d6cf3272e67Affected
LinuxLinux	5.5Affected before 5.5Not affected 5.10.259 through 5.10.Not affected 5.15.210 through 5.15.Not affected 6.1.176 through 6.1.Not affected 6.6.143 through 6.6.Not affected 6.12.94 through 6.12.Not affected 6.18.36 through 6.18.Not affected 7.0.13 through 7.0.*Not affected 7.1 and laterNot affected

Product

Versions

LinuxLinux

e1921168bbd4810de4197446e52f652cd0dd9541 to before 60412bdd1b2576659eac23a23d2d9ff96228a643Affected
e1921168bbd4810de4197446e52f652cd0dd9541 to before 19f8bc139e9b149d1e5bf75ae761d1bb8dd3e7d8Affected
e1921168bbd4810de4197446e52f652cd0dd9541 to before a3ad9b5767c89531fc7dae951b51b0933dcf7051Affected
e1921168bbd4810de4197446e52f652cd0dd9541 to before bede0f481b9137d73d1cf64309cbe4b94818a5d6Affected
e1921168bbd4810de4197446e52f652cd0dd9541 to before 23548007b3c66d628fc7d6b80d1e23be04ea10d9Affected
e1921168bbd4810de4197446e52f652cd0dd9541 to before a13199fa224e9f776f4005d5037df03aa9ea8f37Affected
e1921168bbd4810de4197446e52f652cd0dd9541 to before e302206ad84a407a7e5f3f6fe767ff5efaace689Affected
e1921168bbd4810de4197446e52f652cd0dd9541 to before 180235600934bef6add3be637c296d6cf3272e67Affected

LinuxLinux

5.5Affected
before 5.5Not affected
5.10.259 through 5.10.*Not affected
5.15.210 through 5.15.*Not affected
6.1.176 through 6.1.*Not affected
6.6.143 through 6.6.*Not affected
6.12.94 through 6.12.*Not affected
6.18.36 through 6.18.*Not affected
7.0.13 through 7.0.*Not affected
7.1 and laterNot affected

References

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