x86: speculative vulnerability in 32bit SYSCALL path Due to an oversight in the very original Spectre/Meltdown security work (XSA-254), one entrypath performs its speculation-safety actions too late. In some configurations, there is an unprotected RET instruction which can be attacked with a variety of speculative attacks.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | — | Upgrade xen | Mar 26, 2024 | Mar 21, 2023 |
| Debian | — | Upgrade xen | Mar 27, 2023 | Mar 21, 2023 |
| Dell Powerstore Dsa2023173 | — | Upgrade Dell PowerStoreOS to the latest version | Oct 23, 2025 | Jun 21, 2023 |
| Gentoo Linux | — | Upgrade app-emulation/xen. | Feb 5, 2024 | Mar 21, 2023 |
| Suse | — | Upgrade xen-develUpgrade xen-doc-htmlUpgrade xen-tools-domUUpgrade xen-tools-xendomains-wait-diskUpgrade xen-libs-32bitUpgrade xen-libsUpgrade xen-toolsUpgrade xen | Mar 22, 2023 | Mar 21, 2023 |
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