CVE-2019-9213
Medium
Description
In the Linux kernel before 4.20.14, expand_downwards in mm/mmap.c lacks a check for the mmap minimum address, which makes it easier for attackers to exploit kernel NULL pointer dereferences on non-SMAP platforms. This is related to a capability check for the wrong task.
SeverityMedium
CVSS5.5
Exploit probability—
Product
Linux Kernel
PublishedMar 5, 2019
First seenMar 5, 2019
How to fix
Update
- linux linux_kernel4.9.162, 4.14.105, 4.19.27, 4.20.14 or later
Vendor advisories
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 4.9 ≤ v < 4.9.162, 4.14 ≤ v < 4.14.105, 4.19 ≤ v < 4.19.27, 4.20 ≤ v < 4.20.14 | 4.9.162, 4.14.105, 4.19.27, 4.20.14 |
| debian debian_linux | 8.0 | — |
| redhat enterprise_linux | 7.0, 8.0 | — |
| opensuse leap | 15.0, 42.3 | — |
| canonical ubuntu_linux | 12.04, 14.04, 16.04, 18.10 | — |
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