CVE-2025-61102
Description
A NULL pointer dereference vulnerability was found in FRRouting within the show_vty_ext_link_adj_sid function within ospf_ext.c. When the OSPF daemon (ospfd) is configured with the debug command debug ospf packet all send/recv detail, it attempts to display detailed information for OSPF packets. Under certain malformed OSPF packet conditions, this function may dereference a NULL pointer, leading to a crash of the OSPF process.
Statement
This issue is rated Moderate rather than Important because it depends on a very specific and non-default runtime condition for exploitation. The vulnerable code path is only reachable when OSPF detailed packet debugging (debug ospf packet all send/recv detail) is explicitly enabled, which is typically used for temporary diagnostic purposes and not in production environments. In normal operation, the affected function is not invoked, thereby significantly reducing exposure. Furthermore, the flaw leads solely to a NULL pointer dereference, causing a crash of the ospfd process without memory corruption or control-flow hijacking potential.
Mitigation
No mitigation is currently available that meets Red Hat Product Security’s standards for usability, deployment, applicability, or stability.
Common Vulnerability Scoring System (CVSS) Score Details
Info alert:Important note
CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).
The following CVSS metrics and score provided are preliminary and subject to review.
CVSS v3 Score Breakdown
| Red Hat | NVD | cve.org | |
|---|---|---|---|
| Base Score | 5.9 | N/A | 7.5 |
| Attack Vector | Network | N/A | Network |
| Attack Complexity | High | N/A | Low |
| Privileges Required | None | N/A | None |
| User Interaction | None | N/A | None |
| Scope | Unchanged | N/A | Unchanged |
| Confidentiality | None | N/A | None |
| Integrity Impact | None | N/A | None |
| Availability Impact | High | N/A | High |
Vector
Red Hat: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
cve.org: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
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