CVE-2025-38184

Source
https://nvd.nist.gov/vuln/detail/CVE-2025-38184
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-38184.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2025-38184
Downstream
Related
Published
2025-07-04T14:15:25Z
Modified
2025-08-12T21:01:38Z
Summary
[none]
Details

In the Linux kernel, the following vulnerability has been resolved:

tipc: fix null-ptr-deref when acquiring remote ip of ethernet bearer

The reproduction steps: 1. create a tun interface 2. enable l2 bearer 3. TIPCNLUDPGETREMOTEIP with media name set to tun

tipc: Started in network mode tipc: Node identity 8af312d38a21, cluster identity 4711 tipc: Enabled bearer <eth:syz_tun>, priority 1 Oops: general protection fault KASAN: null-ptr-deref in range CPU: 1 UID: 1000 PID: 559 Comm: poc Not tainted 6.16.0-rc1+ #117 PREEMPT Hardware name: QEMU Ubuntu 24.04 PC RIP: 0010:tipcudpnldumpremoteip+0x4a4/0x8f0

the ub was in fact a struct dev.

when bid != 0 && skipcnt != 0, bearerlist[bid] may be NULL or other media when other thread changes it.

fix this by checking media_id.

References

Affected packages