CVE-2017-8797
High
Description
The NFSv4 server in the Linux kernel before 4.11.3 does not properly validate the layout type when processing the NFSv4 pNFS GETDEVICEINFO or LAYOUTGET operand in a UDP packet from a remote attacker. This type value is uninitialized upon encountering certain error conditions. This value is used as an array index for dereferencing, which leads to an OOPS and eventually a DoS of knfsd and a soft-lockup of the whole system.
SeverityHigh
CVSS7.5
Exploit probability—
Product
Linux Kernel
PublishedJul 2, 2017
First seenJul 2, 2017
How to fix
Update
- linux linux_kernel4.1.40, 4.4.70, 4.9.30, 4.11.3 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 4.0 ≤ v < 4.1.40, 4.2 ≤ v < 4.4.70, 4.5 ≤ v < 4.9.30, 4.11 ≤ v < 4.11.3 | 4.1.40, 4.4.70, 4.9.30, 4.11.3 |
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