Linux: buffer overrun in netback due to unusual packet
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.
CVE-2023-34319
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2023-34319
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "unknown",
"version": "consult Xen advisory XSA-432"
}
],
"defaultStatus": "unknown"
}
]- Related CVEs
- CVE-2023-34319
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #25615 · Revision 1
- Added to Heist Feed
- Publisher date