| From bippy-1.2.0 Mon Sep 17 00:00:00 2001 |
| From: Greg Kroah-Hartman <gregkh@kernel.org> |
| To: <linux-cve-announce@vger.kernel.org> |
| Reply-to: <cve@kernel.org>, <linux-kernel@vger.kernel.org> |
| Subject: CVE-2025-22047: x86/microcode/AMD: Fix __apply_microcode_amd()'s return value |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| x86/microcode/AMD: Fix __apply_microcode_amd()'s return value |
| |
| When verify_sha256_digest() fails, __apply_microcode_amd() should propagate |
| the failure by returning false (and not -1 which is promoted to true). |
| |
| The Linux kernel CVE team has assigned CVE-2025-22047 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 6.6.81 with commit bef830144febedb7de86863ae99d8f53bed76e95 and fixed in 6.6.87 with commit 763f4d638f71cb45235395790a46e9f9e84227fd |
| Issue introduced in 6.12.18 with commit 3e8653e399e7111a3e87d534ff4533b250ae574f and fixed in 6.12.23 with commit ada88219d5315fc13f2910fe278c7112d8d68889 |
| Issue introduced in 6.13.6 with commit c162ba4f45ab6ef3b7114af6fb419f1833f050c0 and fixed in 6.13.11 with commit d295c58fad1d5ab987a81f139dd21498732c4f13 |
| Issue introduced in 6.14 with commit 50cef76d5cb0e199cda19f026842560f6eedc4f7 and fixed in 6.14.2 with commit 7f705a45f130a85fbf31c2abdc999c65644c8307 |
| Issue introduced in 6.14 with commit 50cef76d5cb0e199cda19f026842560f6eedc4f7 and fixed in 6.15 with commit 31ab12df723543047c3fc19cb8f8c4498ec6267f |
| |
| Please see https://www.kernel.org for a full list of currently supported |
| kernel versions by the kernel community. |
| |
| Unaffected versions might change over time as fixes are backported to |
| older supported kernel versions. The official CVE entry at |
| https://cve.org/CVERecord/?id=CVE-2025-22047 |
| will be updated if fixes are backported, please check that for the most |
| up to date information about this issue. |
| |
| |
| Affected files |
| ============== |
| |
| The file(s) affected by this issue are: |
| arch/x86/kernel/cpu/microcode/amd.c |
| |
| |
| Mitigation |
| ========== |
| |
| The Linux kernel CVE team recommends that you update to the latest |
| stable kernel version for this, and many other bugfixes. Individual |
| changes are never tested alone, but rather are part of a larger kernel |
| release. Cherry-picking individual commits is not recommended or |
| supported by the Linux kernel community at all. If however, updating to |
| the latest release is impossible, the individual changes to resolve this |
| issue can be found at these commits: |
| https://git.kernel.org/stable/c/763f4d638f71cb45235395790a46e9f9e84227fd |
| https://git.kernel.org/stable/c/ada88219d5315fc13f2910fe278c7112d8d68889 |
| https://git.kernel.org/stable/c/d295c58fad1d5ab987a81f139dd21498732c4f13 |
| https://git.kernel.org/stable/c/7f705a45f130a85fbf31c2abdc999c65644c8307 |
| https://git.kernel.org/stable/c/31ab12df723543047c3fc19cb8f8c4498ec6267f |
