6.5

CVE-2022-40302: debian debian_linux Out-of-bounds Read

CVSS: 6.5v3.1MediumModified
AliasesUBUNTU-CVE-2022-40302DEBIAN-CVE-2022-40302
Published 03-05-2023Last modified 30-01-2025
Open JSON

Vulnerability summary

CVE-2022-40302 is a medium (CVSS 6.5) Out-of-bounds Read vulnerability in debian debian_linux. EPSS estimates a 2.00% chance of exploitation in the next 30 days, higher than 80.4% of scored vulnerabilities.

Overall risk
26/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.5/10
010
Medium · v3.1 (CVE.org)
EPSS score
2.00%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 2
DLA-3573-1RHSA-2023:6434

Timeline

  1. 03-05-2023
    PublishedVulnerability first disclosed.
  2. 30-01-2025
    Last modifiedVulnerability information updated.

Description

An issue was discovered in bgpd in FRRouting (FRR) through 8.4. By crafting a BGP OPEN message with an option of type 0xff (Extended Length from RFC 9072), attackers may cause a denial of service (assertion failure and daemon restart, or out-of-bounds read). This is possible because of inconsistent boundary checks that do not account for reading 3 bytes (instead of 2) in this 0xff case.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

2.00%

Chance of exploitation in the next 30 days

Percentile

80%

Versus all other CVEs

30-day change

0.00 pp

From 2.00% on 20-09-2026

20-09-202620-10-2026
EPSS score
2.00%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Debian2 products
Frrouting1 product
Ubuntu1 product
  • frr< 7.2.1-1ubuntu0.2 | < 8.1-1ubuntu1.3

3 vendors · 4 products

References

6 links