CVE-2026-44318

The record

free5GC is an open-source implementation of the 5G core network. Prior to 4.2.2, free5GC's BSF PUT /nbsf-management/v1/subscriptions/{subId} handler has an unsynchronized write on the global Subscriptions map. The handler first reads the map under RLock() via BSFContext.GetSubscription(subId), but if the subscription does not exist, ReplaceIndividualSubcription() writes back to the same map directly without taking the mutex (bsfContext.BsfSelf.Subscriptions[subId] = subscription). Under concurrent authenticated PUT load, one goroutine can read while another writes the map, which causes the Go runtime to abort the process with fatal error: concurrent map read and map write (Go runtime panics that come from concurrent map access bypass recover() and terminate the process). The BSF container exits with code 2 -- the entire BSF SBI surface goes down until restart. This vulnerability is fixed in 4.2.2.

Affected packages

Related vulnerabilities

• CVE-2026-114641 Traefik 2.11.x before 2.11.58 and 3.x before 3.7.14 contains a race condition in NTLM and… CWE-362
• CVE-2026-109279 ImageMagick before 6.9.13-57 and 7.x before 7.1.2-32 lacks proper synchronization when… CWE-362
• CVE-2026-97032 HTTP/2 servers could end up crashing due to inadvertently modifying its HPACK encoder… CWE-362
• CVE-2026-98163 In the Linux kernel, the following vulnerability has been resolved: cgroup: Avoid… CWE-362
• CVE-2026-98146 In the Linux kernel, the following vulnerability has been resolved: accel/amdxdna: Remove… CWE-362
• CVE-2026-98153 In the Linux kernel, the following vulnerability has been resolved: nvme: fix racy access… CWE-362
• CVE-2026-98130 In the Linux kernel, the following vulnerability has been resolved: sctp: fix a TOCTOU… CWE-362
• CVE-2026-98115 In the Linux kernel, the following vulnerability has been resolved: ksmbd: safely drain… CWE-362