NetSight
IP …
high7.8

CVE-2023-34319

The fix for XSA-423 added logic to Linux'es netback driver to deal with a frontend splitting a packet in a way such that not all of the headers would come in o…

Impact

The fix for XSA-423 added logic to Linux'es netback driver to deal with a frontend splitting a packet in a way such that not all of the headers would come in one piece. Unfortunately the logic introduced there didn't account for the extreme case of the entire packet being split into as many pieces as permitted by the protocol, yet still being smaller than the area that's specially dealt with to keep all (possible) headers together. Such an unusual packet would therefore trigger a buffer overrun in the driver.

Affected products

VendorProductAffected versions
XenXen
from 3.2.0
DebianDebian Linux
Version 10.0
LinuxLinux Kernel
from 4.9.336 before 4.10
from 4.14.302 before 4.14.321
from 4.19.269 before 4.19.290
from 5.4.227 before 5.4.252
from 5.10.159 before 5.10.189
from 5.15.83 before 5.15.125

Weakness classification

CWE-787

References