NULL pointer dereference in shairport-sync - #VU147258
Published: September 7, 2026
Vulnerability identifier: #VU147258
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: N/A
CWE-ID: CWE-476
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to a null-pointer dereference in the handle_setup_2() AirPlay-2 SETUP handler when processing a SETUP plist containing a non-string timingPeerInfo.Addresses element. A remote attacker can send a specially crafted SETUP request to cause a denial of service.
AirPlay-2 transient pairing does not require a user-entered PIN by default.
Affected software
shairport-sync
Remediation
Install security update from vendor's website.
shairport-sync - update to 5.5