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CVE-2023-34319
Good to know:
Date: September 22, 2023
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.
Language: C
Severity Score
Related Resources (8)
Severity Score
Weakness Type (CWE)
Out-of-bounds Write
CWE-787Top Fix
Upgrade Version
Upgrade to version v4.14.321,v4.19.290,v5.4.252,v5.10.189,v5.15.125,v6.1.44,v6.4.9,v6.5-rc6
CVSS v3.1
Base Score: |
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Attack Vector (AV): | LOCAL |
Attack Complexity (AC): | LOW |
Privileges Required (PR): | LOW |
User Interaction (UI): | NONE |
Scope (S): | UNCHANGED |
Confidentiality (C): | HIGH |
Integrity (I): | HIGH |
Availability (A): | HIGH |