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Vulnerability record · CVE-2026-53215 · published 25 June 2026

CVE-2026-53215: Linux kernel vulnerability

Linux · Linux Kernel

In the Linux kernel, the following vulnerability has been resolved: net: mvpp2: refill RX buffers before XDP or skb use The RX error path returns the current descriptor buffer to the hardware BM pool. That is only valid while the driver still owns the buffer. mvpp2_rx_refill() can fail after the current buffer has been handed to XDP or attached to an skb. In those cases mvpp2_run_xdp() may have recycled, redirected, or queued the page for XDP_TX, and an skb free also retires the data buffer. Returning such a buffer to BM lets hardware DMA into memory that is no longer owned by the RX ring. Refill the BM pool before handing the current buffer to XDP or to the skb. If the allocation fails there, drop the packet and return the still-owned current buffer to BM, preserving the pool depth. Once the refill succeeds, later local drops retire/free the current buffer instead of returning it to BM.

9.8 CVSS 3.1 Critical EPSS 0.74% · top 47.3%
9.8CVSS 3.1 base score
0.74%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
7References
2 Jul 2026Last modified by NVD

Description

In the Linux kernel, the following vulnerability has been resolved: net: mvpp2: refill RX buffers before XDP or skb use The RX error path returns the current descriptor buffer to the hardware BM pool. That is only valid while the driver still owns the buffer. mvpp2_rx_refill() can fail after the current buffer has been handed to XDP or attached to an skb. In those cases mvpp2_run_xdp() may have recycled, redirected, or queued the page for XDP_TX, and an skb free also retires the data buffer. Returning such a buffer to BM lets hardware DMA into memory that is no longer owned by the RX ring. Refill the BM pool before handing the current buffer to XDP or to the skb. If the allocation fails there, drop the packet and return the still-owned current buffer to BM, preserving the pool depth. Once the refill succeeds, later local drops retire/free the current buffer instead of returning it to BM.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://git.kernel.org/stable/c/02e1b5c4d3b4c658b72c145427cded1bba613fc1 Patch
https://git.kernel.org/stable/c/580f92f27cb8724bcc4be98ee89890eab524a2ae Patch
https://git.kernel.org/stable/c/5e8e2a9624df72fca7c736b2966b2cbf6c9c3ff6 Patch
https://git.kernel.org/stable/c/8a2126c5afe89f8ceeb60a3afb9f075b736194cd Patch
https://git.kernel.org/stable/c/a03cdcedb2cbcc42551dc3e4746929e93c5352d5 Patch
https://git.kernel.org/stable/c/a88b3293b556f4d8fba11db9a8061a6b0d3b69e6 Patch
https://git.kernel.org/stable/c/d0c8c4fbd22d260fe28530260656c5fb3c20ce84 Patch

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Source: NIST National Vulnerability Database (record CVE-2026-53215), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.