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VULNERABILITIES

CVE-2026-74708 Details

Description

In the Linux kernel, the following vulnerability has been resolved: xsk: validate launch-time metadata size Launch-time metadata extends beyond the first 16 bytes of struct xsk_tx_metadata. Reject the request when the registered metadata area does not contain the complete field. Snapshot the validated flags for the generic transmit path and use that snapshot for request and completion processing, avoiding inconsistent decisions if user space changes the flags concurrently. Note that only xsk_skb_metadata is properly using the flags, __xsk_buff_get_metadata ignores them. Next commits address that.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: kernel.orgCVSS-B:7.8 HIGHVector:CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://git.kernel.org/stable/c/439ce2dddf3d22129b9113a7881637256a35e936 kernel.org
https://git.kernel.org/stable/c/af511afa1d2977f384044df78d6fbf9fba653f7a kernel.org
https://git.kernel.org/stable/c/bc63d47611c07b0d5d655fe1a590861931527920 kernel.org

Weakness Enumeration

No weakness enumeration is available for this CVE.

Affected Products

No affected product data is available for this CVE.

Change History

2 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-74708
NVD Published Date:
Aug 22, 2026
NVD Last Modified:
Aug 25, 2026
Source:
kernel.org
CVE-2026-74708 Details - Not Deferred