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]
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
6450ddbd5d8e83ea9927c7f9076a21f829699e0f to < 4b65cff06a004ac54f6ea8886060f0d07b1ca055affected6450ddbd5d8e83ea9927c7f9076a21f829699e0f to < 92ba06aef65522483784dcbd6697629ddbd4c4f9affected6450ddbd5d8e83ea9927c7f9076a21f829699e0f to < bae5b55e0f327102e78f6a66fb127275e9bc91b6affected6450ddbd5d8e83ea9927c7f9076a21f829699e0f to < c90402d2a226ff7afbe1d0650bee8ecc15a91049affected6450ddbd5d8e83ea9927c7f9076a21f829699e0f to < e71a57c5aaa389d4c3c82f920761262efdd18d38affected6450ddbd5d8e83ea9927c7f9076a21f829699e0f to < 73851cfceb00cc77d7a0851bc10f2263394c3e87affected6450ddbd5d8e83ea9927c7f9076a21f829699e0f to < 85f11291658ab907c4294319c8102450cc75bb96affected6450ddbd5d8e83ea9927c7f9076a21f829699e0f to < 2ff0e408db36c21ed3fa5e3c1e0e687c82cf132faffected
Linux Linux
Default version status: affected
5.9affected0 to < 5.9unaffected5.10.236 to ≤ 5.10.*unaffected5.15.180 to ≤ 5.15.*unaffected6.1.134 to ≤ 6.1.*unaffected6.6.87 to ≤ 6.6.*unaffected6.12.23 to ≤ 6.12.*unaffected6.13.11 to ≤ 6.13.*unaffected6.14.2 to ≤ 6.14.*unaffected6.15 to ≤ *unaffected
References
- 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 ↗
- https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html ↗
- https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html ↗