CVE-2021-0941
Reported by google_android · Published October 25, 2021
In bpf_skb_change_head of filter.c, there is a possible out of bounds read due to a use after free. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-154177719References: 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 |
|---|---|---|
| linux-raspi-5.4 | Ubuntu:18.04:LTS | 5.4.0-1036.39~18.04.1 |
| linux-azure | Ubuntu:20.04:LTS | 5.4.0-1048.50 |
| linux | Ubuntu:18.04:LTS | 4.15.0-144.148 |
| linux-gcp-4.15 | Ubuntu:18.04:LTS | 4.15.0-1100.113 |
| linux-kvm | Ubuntu:20.04:LTS | 5.4.0-1040.41 |
| linux-azure-fips | Ubuntu:Pro:FIPS-updates:18.04:LTS | 4.15.0-2027.30 |
| linux-raspi2 | Ubuntu:18.04:LTS | 4.15.0-1086.91 |
| linux-azure-4.15 | Ubuntu:18.04:LTS | 4.15.0-1115.128 |
| linux-aws | Ubuntu:18.04:LTS | 4.15.0-1103.110 |
| linux-gkeop-5.4 | Ubuntu:18.04:LTS | 5.4.0-1016.17~18.04.1 |
| linux-oracle-5.4 | Ubuntu:18.04:LTS | 5.4.0-1046.50~18.04.2 |
| linux-aws-fips | Ubuntu:Pro:FIPS-updates:18.04:LTS | 4.15.0-2045.47 |
1 more packages have a fixed version. See every fix in Lookup.
Affected products
| Vendor | Product | Versions |
|---|---|---|
| n/a | Android | Android kernel |
| n/a | Android | * |
Timeline
- Oct 5, 2021 CVE Published
- Oct 25, 2021 PoC Published
- Oct 26, 2021 EPSS Score (30 in total, the first dated here)
- Jun 1, 2026 Security Advisory (5 in total, the first dated here)
- Aug 27, 2026 Coalition ESS Score
- Oct 18, 2026 CVE Updated
Query this with the API
The same record, from the CLI:
vulnetix vdb vuln CVE-2021-0941
vulnetix vdb fixes CVE-2021-0941Or 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-2021-0941/fixes/registry"The Community plan is free and allows 50 queries a day. Get a free API key · API quickstart