CVE-2017-7889
High
Description
The mm subsystem in the Linux kernel through 3.2 does not properly enforce the CONFIG_STRICT_DEVMEM protection mechanism, which allows local users to read or write to kernel memory locations in the first megabyte (and bypass slab-allocation access restrictions) via an application that opens the /dev/mem file, related to arch/x86/mm/init.c and drivers/char/mem.c.
SeverityHigh
CVSS7.8
Exploit probability—
Product
Linux Kernel
PublishedApr 17, 2017
First seenApr 17, 2017
How to fix
Update
- linux linux_kernel3.2.91, 3.10.107, 3.12.74, 3.16.46, 3.18.50, 4.1.41, 4.4.63, 4.9.24, 4.10.12 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | v < 3.2.91, 3.3 ≤ v < 3.10.107, 3.11 ≤ v < 3.12.74, 3.13 ≤ v < 3.16.46, 3.17 ≤ v < 3.18.50, 3.19 ≤ v < 4.1.41, 4.2 ≤ v < 4.4.63, 4.5 ≤ v < 4.9.24, 4.10 ≤ v < 4.10.12 | 3.2.91, 3.10.107, 3.12.74, 3.16.46, 3.18.50, 4.1.41, 4.4.63, 4.9.24, 4.10.12 |
| debian debian_linux | 8.0 | — |
| canonical ubuntu_linux | 12.04, 14.04 | — |
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