Netatalk Off-by-Two Vulnerability in papd lp_write() Function

A buffer overflow vulnerability has been identified in Netatalk versions 2.0.0 through 4.4.2. The issue arises from an off-by-two error in the 'papd' service's 'lp_write()' function, which can lead to a temporary buffer being overwritten. This vulnerability is remotely exploitable, but only under specific conditions when the affected printing configuration is active. The most likely consequence of this vulnerability is a denial-of-service condition.

Impact

Exploitation of this vulnerability can cause a denial-of-service condition by overrunning a temporary buffer, which may disrupt normal service operations.

Remediation

Users can upgrade to Netatalk version 4.5.0 or later, which includes the necessary patch. Alternatively, version 4.4.2 can be patched manually by applying the 'CVE-2026-44065.patch' available in the Netatalk GitHub repository.