VDB
CVE-2022-20566
CVE-2022-20566
PUBLISHED
CVSS 7.8 HIGH
Reported by google_android · Published December 16, 2022
In l2cap_chan_put of l2cap_core, there is a possible use after free due to improper locking. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-165329981References: Upstream kernel
Fixed versions
Upgrade to a fixed version or later. Language registries are listed first, then Linux distributions, then vendor products.
| Package | Ecosystem | Fixed in |
|---|---|---|
| kernel-headers | Amazon Linux | 4.14.291-218.527.amzn2 |
| kernel-tools | Amazon Linux | 4.14.291-218.527.amzn2 |
| perf | Amazon Linux | 4.14.291-218.527.amzn2 |
| kernel-devel | Amazon Linux | 4.14.291-218.527.amzn2 |
| python-perf | Amazon Linux | 4.14.291-218.527.amzn2 |
| kernel-tools-devel | Amazon Linux | 4.14.291-218.527.amzn2 |
| SIMATIC S7-1500 TM MFP - GNU/Linux subsystem | Siemens | 1.1 |
Risk scores
CVSS 3.1
7.8
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected products
| Vendor | Product | Versions |
|---|---|---|
| n/a | Android | Android kernel |
| amazon:2 | kernel-headers | 0 |
| amazon:2 | kernel-tools | 0 |
| amazon:2 | perf | 0 |
| amazon:2 | kernel-devel | 0 |
| amazon:2 | python-perf | 0 |
| amazon:2 | kernel-tools-devel | 0 |
| Siemens | SIMATIC S7-1500 TM MFP - GNU/Linux subsystem | 0 |
| n/a | Android | * |
| amazon:2 | kernel-livepatch-4.14.291-218.527 | 0 |
| amazon:2 | kernel | 0 |
Timeline
- Sep 13, 2022 CVE Published
- Dec 17, 2022 EPSS Score (30 in total, the first dated here)
- Apr 3, 2025 PoC Published
- Mar 21, 2026 Distribution Patch (26 in total, the first dated here)
- Mar 21, 2026 Security Advisory (28 in total, the first dated here)
- Jun 17, 2026 CVE Updated
- Jul 9, 2026 Coalition ESS Score
Query this with the API
The same record, from the CLI:
vulnetix vdb vuln CVE-2022-20566
vulnetix vdb fixes CVE-2022-20566Or 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-2022-20566/fixes/registry"The Community plan is free and allows 50 queries a day. Get a free API key · API quickstart