CVE-2017-5669
High
Description
The do_shmat function in ipc/shm.c in the Linux kernel through 4.9.12 does not restrict the address calculated by a certain rounding operation, which allows local users to map page zero, and consequently bypass a protection mechanism that exists for the mmap system call, by making crafted shmget and shmat system calls in a privileged context.
SeverityHigh
CVSS7.8
Exploit probability—
Product
Linux Kernel
PublishedFeb 24, 2017
First seenFeb 24, 2017
How to fix
Update
- linux linux_kernel4.11 or later
Vendor advisories
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | v < 4.11 | 4.11 |
| debian debian_linux | 8.0 | — |
| canonical ubuntu_linux | 12.04, 14.04 | — |
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