intel-microcode: Out-of-bounds write in the memory subsystem for some Intel(R) Xeon(R) 6processors when using Intel(R) SGX or Intel(R)...
CVE-2025-26403 is fixed in 3 products on 1 platform, first by intel-microcode 3.20250812.0ubuntu0.18.04.1+esm1, released August 12, 2025. It is not reported as exploited. Patch Radar priority: Routine.
Out-of-bounds write in the memory subsystem for some Intel(R) Xeon(R) 6processors when using Intel(R) SGX or Intel(R) TDX may allow a privilegeduser to potentially enable escalation of privilege via local access.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| intel-microcode · Debian 12.15 (bookworm) | 3.20250812.1~deb12u1 | DEBIAN-CVE-2025-26403 | Aug 12, 2025 |
| intel-microcode · Debian 13.5 (trixie) | 3.20250812.1~deb13u1 | DEBIAN-CVE-2025-26403 | Aug 12, 2025 |
| intel-microcode · Debian 14 | 3.20250812.1 | DEBIAN-CVE-2025-26403 | Aug 12, 2025 |
| intel-microcode · Ubuntu 18.04.6 LTS (bionic) | 3.20250812.0ubuntu0.18.04.1+esm1 | intel-microcode 3.20250812.0ubuntu0.18.04.1+esm1 | Aug 12, 2025 |
| intel-microcode · Ubuntu 20.04 LTS (focal) | 3.20250812.0ubuntu0.20.04.1+esm1 | intel-microcode 3.20250812.0ubuntu0.20.04.1+esm1 | Aug 12, 2025 |
| intel-microcode · Ubuntu 22.04.1 LTS (jammy) | 3.20250812.0ubuntu0.22.04.1 | intel-microcode 3.20250812.0ubuntu0.22.04.1 | Aug 12, 2025 |
| intel-microcode · Ubuntu 24.04.5 LTS (noble) | 3.20250812.0ubuntu0.24.04.1 | intel-microcode 3.20250812.0ubuntu0.24.04.1 | Aug 12, 2025 |
| intel-microcode · Ubuntu 25.04 (plucky) | 3.20250812.0ubuntu0.25.04.1 | intel-microcode 3.20250812.0ubuntu0.25.04.1 | Jan 16, 2026 |
| intel-microcode · Ubuntu 25.10 (questing) | 3.20250812.0ubuntu0.25.10.1 | intel-microcode 3.20250812.0ubuntu0.25.10.1 | Aug 12, 2025 |
| microcode_ctl · amzn 2023 | 2:2.1-53.amzn2023.0.14 | ALAS2023-2025-1209 | Sep 23, 2025 |
| ucode-intel · opensuse-leap 15.6 | 20250812-150200.59.1 | SUSE-SU-2025:03053-1 | Sep 2, 2025 |
| ucode-intel · sles 15.6 | 20250812-150200.59.1 | SUSE-SU-2025:03053-1 | Sep 2, 2025 |
| ucode-intel · sles 15.7 | 20250812-150200.59.1 | SUSE-SU-2025:03053-1 | Sep 2, 2025 |
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