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.
History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: XEN

Published: 2023-09-22T13:34:44.424Z

Updated: 2024-08-02T16:10:06.547Z

Reserved: 2023-06-01T10:44:17.064Z

Link: CVE-2023-34319

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2023-09-22T14:15:45.627

Modified: 2024-11-21T08:07:00.227

Link: CVE-2023-34319

cve-icon Redhat

Severity : Moderate

Publid Date: 2023-08-08T00:00:00Z

Links: CVE-2023-34319 - Bugzilla