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Vulnerabilities CVE-2026-74708

CVE-2026-74708

None
Open
TLP:CLEAR

xsk: validate launch-time metadata size

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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.

Details

Confidence
90%
Published
Aug 22, 2026
Last Modified
Aug 22, 2026
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