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 Kernel | >=4.14.176<4.15 | |
| Linux Kernel | >=4.19.31<4.20 | |
| Linux Kernel | >=5.0.4<5.10.232 | |
| Linux Kernel | >=5.11<5.15.175 | |
| Linux Kernel | >=5.16<6.1.121 | |
| Linux Kernel | >=6.2<6.6.67 | |
| Linux Kernel | >=6.7<6.12.6 | |
| Linux Kernel | =6.13-rc1 | |
| Linux Kernel | =6.13-rc2 | |
| debian/linux | <=5.10.223-1 | 5.10.234-1 6.1.129-1 6.1.133-1 6.12.22-1 |
| debian/linux-6.1 | 6.1.129-1~deb11u1 |
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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
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-56662
- https://nvd.nist.gov/vuln/detail/CVE-2024-56662
- https://launchpad.net/bugs/cve/CVE-2024-56662
- https://security-tracker.debian.org/tracker/CVE-2024-56662
- https://ubuntu.com/security/CVE-2024-56662
- https://git.kernel.org/linus/265e98f72bac6c41a4492d3e30a8e5fd22fe0779
Frequently Asked Questions
What is the severity of CVE-2024-56662?
CVE-2024-56662 has been classified as a high-severity vulnerability due to its potential for causing vmalloc-out-of-bounds read issues.
How do I fix CVE-2024-56662?
To mitigate CVE-2024-56662, it's recommended to update the Linux kernel to a version that addresses this vulnerability.
Which versions of the Linux kernel are affected by CVE-2024-56662?
CVE-2024-56662 affects multiple versions of the Linux kernel, specifically from version 4.14.176 to 6.13-rc2.
What component of the Linux kernel is impacted by CVE-2024-56662?
CVE-2024-56662 impacts the ACPI nfit component in the Linux kernel.
Is CVE-2024-56662 a remote vulnerability?
CVE-2024-56662 primarily involves local read vulnerabilities and does not represent a remote code execution threat.
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