xen: Shadow mode tracing code uses a set of per-CPU variables to avoid cumbersome parameter passing
CVE-2025-58150 is fixed in xen on 1 platform, first by SUSE-SU-2026:0306-1, released January 27, 2026. It is not reported as exploited. Patch Radar priority: High.
Shadow mode tracing code uses a set of per-CPU variables to avoid cumbersome parameter passing. Some of these variables are written to with guest controlled data, of guest controllable size. That size can be larger than the variable, and bounding of the writes was missing.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| xen · Debian 12.15 (bookworm) | 4.17.7-0+deb12u1 | DEBIAN-CVE-2025-58150 | Jan 28, 2026 |
| xen · Debian 13.5 (trixie) | 4.20.2+37-g61ff35323e-0+deb13u1 | DEBIAN-CVE-2025-58150 | Jan 28, 2026 |
| xen · Debian 14 | 4.20.2+37-g61ff35323e-1 | DEBIAN-CVE-2025-58150 | Jan 28, 2026 |
| xen · opensuse-leap 15.6 | 4.18.5_10-150600.3.37.1 | SUSE-SU-2026:0306-1 | Jan 27, 2026 |
| xen · sles 15.7 | 4.20.2_06-150700.3.25.1 | SUSE-SU-2026:0589-1 | Feb 20, 2026 |
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