What is CVE-2026-53217?

CVE-2026-53217 is a High severity Linux kernel vulnerability with a CVSS score of 8.6 out of 10, affecting Linux kernel versions from 5.5 onward and patched in 5.10.259, 5.15.210, 6.1.176 and others. CVE-2026-53217 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-53217?

CVE-2026-53217 has a CVSS score of 8.6 out of 10, rated High severity. The vector string is CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L.

Is there a patch available for CVE-2026-53217?

Yes, CVE-2026-53217 has been patched. Fixed versions include 5.10.259, 5.15.210, 6.1.176 and others. If you are running Linux kernel 5.5 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-53217 actively exploited?

CVE-2026-53217 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2026-53217

High

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.

Package Linux Kernel

Published 2026-06-25

Last modified 2026-07-02

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

8.6

out of 10

High

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

Low

Availability

Low

Vector string

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L

Affected versions

Linux kernel versions 5.5 and later are affected. Fixed in 5.10.259, 5.15.210, 6.1.176, 6.6.143, 6.12.94, 6.18.36, 7.0.13, 7.1 and their respective stable series.

Affected from

≥ 5.5

Fixed in

✓ 5.10.259 5.10.x ✓ 5.15.210 5.15.x ✓ 6.1.176 6.1.x ✓ 6.6.143 6.6.x ✓ 6.12.94 6.12.x ✓ 6.18.36 6.18.x ✓ 7.0.13 7.0.x ✓ 7.1

References

8 total

Kernel Git
https://git.kernel.org/stable/c/180235600934bef6add3be637c296d6cf3272e67

Patch
Kernel Git
https://git.kernel.org/stable/c/19f8bc139e9b149d1e5bf75ae761d1bb8dd3e7d8

Patch
Kernel Git
https://git.kernel.org/stable/c/23548007b3c66d628fc7d6b80d1e23be04ea10d9

Patch
Kernel Git
https://git.kernel.org/stable/c/60412bdd1b2576659eac23a23d2d9ff96228a643

Patch
Kernel Git
https://git.kernel.org/stable/c/a13199fa224e9f776f4005d5037df03aa9ea8f37

Patch

Showing 5 of 8 references View all on NVD

Details

CVE ID CVE-2026-53217

Severity High

CVSS score 8.6 / 10

CVSS version 3.1

Published 2026-06-25

Modified 2026-07-02

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2026-53217?

CVE-2026-53217 is a High severity Linux kernel vulnerability with a CVSS score of 8.6 out of 10 . It affects Linux kernel versions from 5.5 onward and has been patched in 5.10.259, 5.15.210, 6.1.176 and others. CVE-2026-53217 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2026-53217?

CVE-2026-53217 has a CVSS score of 8.6 out of 10, rated High severity (CVSS 3.1). The vector string is CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L.
Is there a patch available for CVE-2026-53217?

Yes. CVE-2026-53217 has been patched. Fixed versions include 5.10.259, 5.15.210, 6.1.176 and others. If you are running Linux kernel 5.5 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-53217 actively exploited?

No. CVE-2026-53217 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.