In the Opaque LSA Extended Link parser in FRRouting (FRR) through 9.1, there can be a buffer overflow and daemon crash in ospf_te_parse_ext_link for OSPF LSA packets during an attempt to read Segment Routing Adjacency SID subTLVs (lengths are not validated).
CVE-2024-31951
Score 6.5 from GitHub Security Advisory published 2024-04-07. NVD baseline CVSS 6.5; sources differ by 0.0.
- Lower severity and no public exploit yet
A fix is available — apply it.
- CVSS v3
- 6.5
- EG Score
- 6.5(medium)
- EG Risk
- 29(Track)EG Risk 29/100SSVC: Track
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computedSeverity65% × 45%Exploitation1% × 40%Automatability0% × 15%Action: Routine — remediate on your standard cadence. - EPSS PROB
- 1%
- EPSS %ILE
- 43%
- KEV
- Not listed
Published
April 7, 2024
Last Modified
May 1, 2025
References (4)
- cve@mitrehttps://github.com/FRRouting/frr/pull/15674/
- cve@mitrehttps://github.com/FRRouting/frr/pull/15674/commits/344fb4be2bc27316c74b17003c05ea40be395836
- af854a3a-2127-422b-91ae-364da2661108https://github.com/FRRouting/frr/pull/15674/
- af854a3a-2127-422b-91ae-364da2661108https://github.com/FRRouting/frr/pull/15674/commits/344fb4be2bc27316c74b17003c05ea40be395836
Patch Availability(1)
| Vendor / Ecosystem | Fixed in / Patch | Released | Source |
|---|---|---|---|
| ubuntu | frr-snmp (8.1-1ubuntu1.10) @ jammy | 2026-05-24 | ubuntu |
Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.
Affected Packages
(3 across 3 ecosystems)
Debian:12(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| frr | 8.4.2-1, 8.4.4-1, 8.4.4-1.1~deb12u1 | 8.4.4-1.1~deb12u2 | — |
Debian:13(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| frr | 10.3-3 | 10.3-3+deb13u1 | — |
Debian:14(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| frr | — | 10.0.1-0.1 | — |
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
All Vendor Advisories
(2)
Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.
- Microsoft MSRCCVE-2024-319512024-09-11
In the Opaque LSA Extended Link parser in FRRouting (FRR) through 9.1 there can be a buffer overflow and daemon crash in ospf_te_parse_ext_link for OSPF LSA packets during an attempt to read Segment Routing Adjacency SID subTLVs (lengths are not validated).
- UbuntuUSN-6794-1MEDIUM
FRR vulnerabilities
Data Freshness Timeline
(refreshed 8× in last 7d / 31× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
Showing the most recent 100 of 178 total refreshes for this CVE.
- 2026-09-24 14:01 UTCEPSS rescore
- 2026-09-23 13:46 UTCEPSS rescore
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Related CVEs(same product + same vendor + same CWE)
Same product
10 shownDebian:12:frr
Same vendor
3 shownubuntu:USN-6794-1
Frequently asked(5)
What is CVE-2024-31951?
When was CVE-2024-31951 disclosed?
Is CVE-2024-31951 actively exploited?
What is the CVSS score of CVE-2024-31951?
How do I remediate CVE-2024-31951?
Dependency Blast Radius
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