Processing sftp server read may cause null dereference
At a glance
Severity
LOW 3.1
EPSS
EPSS 0.90 % · percentile 60 (2026-10-27)
State
PUBLISHED
Published
Updated
Assigner
redhat
NVD status
Modified
Description
A missing allocation check in sftp server processing read requests may cause a NULL dereference on low-memory conditions. The malicious client can request up to 4GB SFTP reads, causing allocation of up to 4GB buffers, which was not being checked for failure. This will likely crash the authenticated user's sftp server connection (if implemented as forking as recommended). For thread-based servers, this might also cause DoS for legitimate users.
Given this code is not in any released versions, no security releases have been issued.
