CVE-2021-42252
Last modified
CVE-2021-42252 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. An issue was discovered in aspeed_lpc_ctrl_mmap in drivers/soc/aspeed/aspeed-lpc-ctrl.c in the Linux kernel before 5.14.6. Local attackers able to access the Aspeed LPC control interface could overwrite memory in the kernel and potentially execute privileges, aka CID-b49a0e69a7b1. EPSS estimates a 0.37% chance of exploitation in the next 30 days.
Description
An issue was discovered in aspeed_lpc_ctrl_mmap in drivers/soc/aspeed/aspeed-lpc-ctrl.c in the Linux kernel before 5.14.6. Local attackers able to access the Aspeed LPC control interface could overwrite memory in the kernel and potentially execute privileges, aka CID-b49a0e69a7b1. This occurs because a certain comparison uses values that are not memory sizes.
Metrics
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Netapp | Cloud Backup | All versions |
| Linux | Linux Kernel | >= 4.12, < 4.14.247 |
| Linux | Linux Kernel | >= 4.15, < 4.19.207 |
| Linux | Linux Kernel | >= 4.20, < 5.4.148 |
| Linux | Linux Kernel | >= 5.5, < 5.10.67 |
| Linux | Linux Kernel | >= 5.11, < 5.13.19 |
| Linux | Linux Kernel | >= 5.14, < 5.14.6 |
| Netapp | H300s Firmware | All versions |
| Netapp | H500s Firmware | All versions |
| Netapp | H700s Firmware | All versions |
| Netapp | H300e Firmware | All versions |
| Netapp | H500e Firmware | All versions |
| Netapp | H700e Firmware | All versions |
| Netapp | H410s Firmware | All versions |
| Netapp | H410c Firmware | All versions |
| Netapp | Solidfire Baseboard Management Controller Firmware | All versions |
References
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.14.6Release Notes, Vendor Advisory
- https://security.netapp.com/advisory/ntap-20211112-0006/Third Party Advisory
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.14.6Release Notes, Vendor Advisory
- https://security.netapp.com/advisory/ntap-20211112-0006/Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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