CVE-2025-61099: Null Pointer Dereference

Published Oct 27, 2025
·
Updated

FRRouting/frr from v2.0 through v10.4.1 was discovered to contain a NULL pointer dereference via the opaqueinfodetail function at ospfopaque.c. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted LS Update packet.

Affected Software

20 affected componentsFixes available
Frrouting FRR>=2.0<=10.4.1
Frrouting FRRouting>=2.0<=10.4.1
Microsoft azl3 frr 9.1.1-3
Microsoft cbl2 frr 8.5.5-3
Microsoft azl3 frr 9.1.1-5
Patch available
Microsoft cbl2 frr 8.5.5-4
Microsoft azl3 frr 9.1.1-4
Microsoft cbl2 frr 8.5.5-5
Patch available
ubuntu/quagga*
ubuntu/quagga*
ubuntu/quagga*
ubuntu/frr*
ubuntu/frr<8.1-1ubuntu1.14
8.1-1ubuntu1.14
ubuntu/frr<8.4.4-1.1ubuntu6.5
8.4.4-1.1ubuntu6.5
ubuntu/frr<10.4.1-3ubuntu1.1
10.4.1-3ubuntu1.1
ubuntu/frr<10.5.1-1ubuntu2
10.5.1-1ubuntu2
debian/frr<8.4.4-1.1~deb12u2
8.4.4-1.1~deb12u2
debian/frr<10.3-3+deb13u1
10.3-3+deb13u1
debian/frr<10.5.1-3
10.5.1-3
debian/frr
8.4.4-1.1~deb12u210.3-3+deb13u110.7.1-7

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade ubuntu/frr to a version that resolves this vulnerability.

    Fixed in 8.1-1ubuntu1.14
  2. Upgrade

    Upgrade ubuntu/frr to a version that resolves this vulnerability.

    Fixed in 8.4.4-1.1ubuntu6.5
  3. Upgrade

    Upgrade ubuntu/frr to a version that resolves this vulnerability.

    Fixed in 10.4.1-3ubuntu1.1
  4. Upgrade

    Upgrade ubuntu/frr to a version that resolves this vulnerability.

    Fixed in 10.5.1-1ubuntu2
  5. Upgrade

    Upgrade debian/frr to a version that resolves this vulnerability.

    Fixed in 8.4.4-1.1~deb12u2
  6. Upgrade

    Upgrade debian/frr to a version that resolves this vulnerability.

    Fixed in 10.3-3+deb13u1
  7. Upgrade

    Upgrade debian/frr to a version that resolves this vulnerability.

    Fixed in 10.5.1-3
  8. Upgrade

    Upgrade debian/frr to a version that resolves this vulnerability.

    Fixed in 8.4.4-1.1~deb12u2Fixed in 10.3-3+deb13u1Fixed in 10.7.1-7

Event History

Oct 27, 2025
CVE Published
via MITRE·12:00 AM
Data Sourced
via MITRE·12:00 AM
Description
Data Sourced
via OSV·12:00 AM
DescriptionSeverity
Data Sourced
via NVD·07:16 PM
RemedyDescriptionSeverityWeaknessAffected Software
Nov 5, 2025
Data Sourced
via Microsoft·01:01 AM
DescriptionSeverityWeaknessAffected Software
Nov 5, 2026
Data Sourced
via OSV·07:01 PM
Affected Software

Parent advisories

This vulnerability appears in the following advisories.

Frequently Asked Questions

1

What is the severity of CVE-2025-61099?

CVE-2025-61099 is classified as a high severity vulnerability leading to Denial of Service.

2

How do I fix CVE-2025-61099?

To mitigate CVE-2025-61099, update your FRRouting FRR software to version 10.4.2 or later.

3

What is the nature of CVE-2025-61099?

CVE-2025-61099 involves a NULL pointer dereference vulnerability in the opaque_info_detail function.

4

Which versions of FRRouting FRR are affected by CVE-2025-61099?

FRRouting FRR versions from 2.0 through 10.4.1 are affected by CVE-2025-61099.

5

What can an attacker achieve with CVE-2025-61099?

An attacker can exploit CVE-2025-61099 to cause a Denial of Service through crafted LS Update packets.

Company

Resources

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co
By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.
© 2026 SecAlerts Pty Ltd.
ABN: 70 645 966 203, ACN: 645 966 203