| 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-2025-22044: acpi: nfit: fix narrowing conversion in acpi_nfit_ctl |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| acpi: nfit: fix narrowing conversion in acpi_nfit_ctl |
| |
| Syzkaller has reported a warning in to_nfit_bus_uuid(): "only secondary |
| bus families can be translated". This warning is emited if the argument |
| is equal to NVDIMM_BUS_FAMILY_NFIT == 0. Function acpi_nfit_ctl() first |
| verifies that a user-provided value call_pkg->nd_family of type u64 is |
| not equal to 0. Then the value is converted to int, and only after that |
| is compared to NVDIMM_BUS_FAMILY_MAX. This can lead to passing an invalid |
| argument to acpi_nfit_ctl(), if call_pkg->nd_family is non-zero, while |
| the lower 32 bits are zero. |
| |
| Furthermore, it is best to return EINVAL immediately upon seeing the |
| invalid user input. The WARNING is insufficient to prevent further |
| undefined behavior based on other invalid user input. |
| |
| All checks of the input value should be applied to the original variable |
| call_pkg->nd_family. |
| |
| [iweiny: update commit message] |
| |
| The Linux kernel CVE team has assigned CVE-2025-22044 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 5.9 with commit 6450ddbd5d8e83ea9927c7f9076a21f829699e0f and fixed in 5.10.236 with commit 4b65cff06a004ac54f6ea8886060f0d07b1ca055 |
| Issue introduced in 5.9 with commit 6450ddbd5d8e83ea9927c7f9076a21f829699e0f and fixed in 5.15.180 with commit 92ba06aef65522483784dcbd6697629ddbd4c4f9 |
| Issue introduced in 5.9 with commit 6450ddbd5d8e83ea9927c7f9076a21f829699e0f and fixed in 6.1.134 with commit bae5b55e0f327102e78f6a66fb127275e9bc91b6 |
| Issue introduced in 5.9 with commit 6450ddbd5d8e83ea9927c7f9076a21f829699e0f and fixed in 6.6.87 with commit c90402d2a226ff7afbe1d0650bee8ecc15a91049 |
| Issue introduced in 5.9 with commit 6450ddbd5d8e83ea9927c7f9076a21f829699e0f and fixed in 6.12.23 with commit e71a57c5aaa389d4c3c82f920761262efdd18d38 |
| Issue introduced in 5.9 with commit 6450ddbd5d8e83ea9927c7f9076a21f829699e0f and fixed in 6.13.11 with commit 73851cfceb00cc77d7a0851bc10f2263394c3e87 |
| Issue introduced in 5.9 with commit 6450ddbd5d8e83ea9927c7f9076a21f829699e0f and fixed in 6.14.2 with commit 85f11291658ab907c4294319c8102450cc75bb96 |
| Issue introduced in 5.9 with commit 6450ddbd5d8e83ea9927c7f9076a21f829699e0f and fixed in 6.15 with commit 2ff0e408db36c21ed3fa5e3c1e0e687c82cf132f |
| |
| 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-2025-22044 |
| 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: |
| drivers/acpi/nfit/core.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/4b65cff06a004ac54f6ea8886060f0d07b1ca055 |
| https://git.kernel.org/stable/c/92ba06aef65522483784dcbd6697629ddbd4c4f9 |
| https://git.kernel.org/stable/c/bae5b55e0f327102e78f6a66fb127275e9bc91b6 |
| https://git.kernel.org/stable/c/c90402d2a226ff7afbe1d0650bee8ecc15a91049 |
| https://git.kernel.org/stable/c/e71a57c5aaa389d4c3c82f920761262efdd18d38 |
| https://git.kernel.org/stable/c/73851cfceb00cc77d7a0851bc10f2263394c3e87 |
| https://git.kernel.org/stable/c/85f11291658ab907c4294319c8102450cc75bb96 |
| https://git.kernel.org/stable/c/2ff0e408db36c21ed3fa5e3c1e0e687c82cf132f |
