In the Linux kernel, the following vulnerability has been resolved:
xsk: validate metadata when processing requests
The zero-copy path validates TX metadata while obtaining the descriptor context, then reads it again later when preparing the hardware request. User space can change the metadata between those operations and bypass the original validation.
Validate the metadata in xsk_tx_metadata_request() and use the resulting flags snapshot for every feature check. Read request fields once so all zero-copy drivers process only values observed after successful validation.
CVSS Details
- CVSS 3.1 Base Score: 7.8
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon_linux_2023 | — | Upgrade microvm-kernel6.18Upgrade kernel6.18-modules-extraUpgrade kernel6.18-develUpgrade kernel6.18-toolsUpgrade kernel-livepatch-6.18.48-107.148Upgrade kernel6.18-debuginfoUpgrade python3-perf6.18-debuginfoUpgrade kernel6.18-headersUpgrade kernel6.18-tools-develUpgrade perf6.18-debuginfoUpgrade kernel6.18-debuginfo-common-x86_64Upgrade bpftool6.18-debuginfoUpgrade bpftool6.18Upgrade python3-perf6.18Upgrade kernel6.18Upgrade kernel6.18-debuginfo-common-aarch64Upgrade kernel6.18-tools-debuginfoUpgrade perf6.18Upgrade kernel6.18-modules-extra-common | Sep 30, 2026 | Aug 22, 2026 |
| Redhat_linux | — | No solution exists | Aug 26, 2026 | Aug 22, 2026 |
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