VDB
CVE-2020-36691
CVE-2020-36691
PUBLISHED
CVSS 5.5 MEDIUM
Reported by mitre · Published March 24, 2023
An issue was discovered in the Linux kernel before 5.8. lib/nlattr.c allows attackers to cause a denial of service (unbounded recursion) via a nested Netlink policy with a back reference.
Fixed versions
Upgrade to a fixed version or later. Language registries are listed first, then Linux distributions, then vendor products.
| Package | Ecosystem | Fixed in |
|---|---|---|
| linux-gcp | Ubuntu:20.04:LTS | 5.4.0-1110.119 |
| linux-ibm-5.4 | Ubuntu:Pro:18.04:LTS | 5.4.0-1054.59~18.04.1 |
| linux-azure-5.4 | Ubuntu:Pro:18.04:LTS | 5.4.0-1113.119~18.04.1 |
| linux-raspi | Ubuntu:20.04:LTS | 5.4.0-1091.102 |
Risk scores
CVSS 3.1
5.5
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Affected products
| Vendor | Product | Versions |
|---|---|---|
| n/a | n/a | n/a |
| n/a | n/a | * |
Timeline
- Mar 24, 2023 CVE Published
- Mar 25, 2023 EPSS Score (30 in total, the first dated here)
- Feb 21, 2025 CVE Updated
- Mar 6, 2026 Distribution Patch (38 in total, the first dated here)
- Mar 6, 2026 Security Advisory (40 in total, the first dated here)
- Aug 30, 2026 Coalition ESS Score
Query this with the API
The same record, from the CLI:
vulnetix vdb vuln CVE-2020-36691
vulnetix vdb fixes CVE-2020-36691Or with curl, using the org id and key from your account page:
curl -s -H "Authorization: ApiKey ${VULNETIX_ORG_ID}:${VULNETIX_API_KEY}" \
"https://api.vdb.vulnetix.com/v2/vuln/CVE-2020-36691/fixes/registry"The Community plan is free and allows 50 queries a day. Get a free API key · API quickstart