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CVE-2026-74708

Unknown

Last modified

CVE-2026-74708 is a vulnerability of currently unknown severity. 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.

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.

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= ca4419f15abd19ba8be1e109661b60f9f5b6c9f0, < af511afa1d2977f384044df78d6fbf9fba653f7a; >= ca4419f15abd19ba8be1e109661b60f9f5b6c9f0, < bc63d47611c07b0d5d655fe1a590861931527920; >= ca4419f15abd19ba8be1e109661b60f9f5b6c9f0, < 439ce2dddf3d22129b9113a7881637256a35e936; d9d736c416c9a85f84e15435ba82a177262e745b; >= 6.14.2, < 6.15
LinuxLinux6.15

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is CVE-2026-74708?
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.
How severe is CVE-2026-74708?
Severity scoring for CVE-2026-74708 is pending analysis.
How do I fix CVE-2026-74708?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST