CVE-2021-31916
Medium
Description
An out-of-bounds (OOB) memory write flaw was found in list_devices in drivers/md/dm-ioctl.c in the Multi-device driver module in the Linux kernel before 5.12. A bound check failure allows an attacker with special user (CAP_SYS_ADMIN) privilege to gain access to out-of-bounds memory leading to a system crash or a leak of internal kernel information. The highest threat from this vulnerability is to system availability.
SeverityMedium
CVSS6.7
Exploit probability—
Product
Linux Kernel
PublishedMay 6, 2021
First seenMay 6, 2021
Weakness typeCWE-787Out-of-bounds write
How to fix
Update
- linux linux_kernel5.12 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | v < 5.12 | 5.12 |
| redhat enterprise_linux | 7.0, 8.0 | — |
| debian debian_linux | 9.0 | — |
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