CVE-2024-56662: acpi: nfit: vmalloc-out-of-bounds Read in acpi_nfit_ctl
First published: Fri Dec 27 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: acpi: nfit: vmalloc-out-of-bounds Read in acpi_nfit_ctl Fix an issue detected by syzbot with KASAN: BUG: KASAN: vmalloc-out-of-bounds in cmd_to_func drivers/acpi/nfit/ core.c:416 [inline] BUG: KASAN: vmalloc-out-of-bounds in acpi_nfit_ctl+0x20e8/0x24a0 drivers/acpi/nfit/core.c:459 The issue occurs in cmd_to_func when the call_pkg->nd_reserved2 array is accessed without verifying that call_pkg points to a buffer that is appropriately sized as a struct nd_cmd_pkg. This can lead to out-of-bounds access and undefined behavior if the buffer does not have sufficient space. To address this, a check was added in acpi_nfit_ctl() to ensure that buf is not NULL and that buf_len is less than sizeof(*call_pkg) before accessing it. This ensures safe access to the members of call_pkg, including the nd_reserved2 array.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Linux kernel | >=4.14.176<4.15 | |
| Linux Linux kernel | >=4.19.31<4.20 | |
| Linux Linux kernel | >=5.0.4<5.10.232 | |
| Linux Linux kernel | >=5.11<5.15.175 | |
| Linux Linux kernel | >=5.16<6.1.121 | |
| Linux Linux kernel | >=6.2<6.6.67 | |
| Linux Linux kernel | >=6.7<6.12.6 | |
| Linux Linux kernel | =6.13-rc1 | |
| Linux Linux kernel | =6.13-rc2 |
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Reference Links
- https://git.kernel.org/stable/c/616aa5f3c86e0479bcbb81e41c08c43ff32af637
- https://git.kernel.org/stable/c/bbdb3307f609ec4dc9558770f464ede01fe52aed
- https://git.kernel.org/stable/c/143f723e9eb4f0302ffb7adfdc7ef77eab3f68e0
- https://git.kernel.org/stable/c/e08dc2dc3c3f7938df0e4476fe3e6fdec5583c1d
- https://git.kernel.org/stable/c/212846fafb753a48e869e2a342fc1e24048da771
- https://git.kernel.org/stable/c/265e98f72bac6c41a4492d3e30a8e5fd22fe0779
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