VDB
CVE-2021-20239
CVE-2021-20239
PUBLISHED
A flaw was found in the Linux kernel in versions before 5.4.92 in the BPF protocol. This flaw allows an attacker with a local account to leak information about kernel internal addresses. The highest threat from this vulnerability is to confidentiality.
EPSS 0.08% · 23.9th percentile
Risk Scores
EPSS Score
0.08%
23.9th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Ubuntu:18.04:LTS | linux-aws-5.4 | *, 0, 5.4.0-1018.18~18.04.1 |
| Ubuntu:20.04:LTS | linux-riscv | 0, 5.4.0-26.30, 5.4.0-27.31 |
| Ubuntu:18.04:LTS | linux-gcp | 4.15.0-1027.28, 5.0.0-1033.34, 5.0.0-1031.32 |
| Ubuntu:20.04:LTS | linux-gcp | 0, 5.4.0-1021.21, 5.4.0-1029.31 |
| Ubuntu:Pro:FIPS:20.04:LTS | linux-gcp-fips | 5.4.0-1021.21+fips1, 0 |
| Ubuntu:18.04:LTS | linux-hwe-edge | 5.0.0-19.20~18.04.1, 5.0.0-16.17~18.04.1, 5.0.0-20.21~18.04.1 |
| Ubuntu:Pro:FIPS:20.04:LTS | linux-aws-fips | 0, 5.4.0-1021.21+fips2 |
| Ubuntu:18.04:LTS | linux-gcp-5.4 | 0, 5.4.0-1033.35~18.04.1, 5.4.0-1019.19~18.04.2 |
| Ubuntu:20.04:LTS | linux-oem-5.6 | 5.6.0-1007.7, 5.6.0-1017.17, 5.6.0-1042.46 |
| Ubuntu:Pro:FIPS-updates:20.04:LTS | linux-gcp-fips | 5.4.0-1021.21+fips1, 0 |
| Ubuntu:18.04:LTS | linux-azure | 4.15.0-1019.19, 4.15.0-1013.13, * |
| Ubuntu:20.04:LTS | linux-oracle | 5.4.0-1005.5, 5.3.0-1008.9, 5.4.0-1008.8 |
| Ubuntu:18.04:LTS | linux-azure-5.4 | 5.4.0-1020.20~18.04.1, 0, 5.4.0-1040.42~18.04.1 |
| Ubuntu:20.04:LTS | linux-kvm | 5.3.0-1008.9, 5.3.0-1009.10, 5.4.0-1006.6 |
| Ubuntu:Pro:FIPS:20.04:LTS | linux-azure-fips | 0, 5.4.0-1022.22+fips1 |
| Ubuntu:20.04:LTS | linux-raspi | 5.4.0-1028.31, 5.4.0-1022.25, 5.4.0-1023.26 |
| Ubuntu:20.04:LTS | linux-hwe-5.8 | 5.8.0-48.54~20.04.1, 5.8.0-33.36~20.04.1, 5.8.0-34.37~20.04.2 |
| Ubuntu:16.04:LTS | linux-hwe-edge | 4.11.0-14.20~16.04.1, 4.13.0-16.19~16.04.3, 4.10.0-14.16~16.04.1 |
| Ubuntu:Pro:FIPS-updates:20.04:LTS | linux-aws-fips | 0, * |
| Ubuntu:18.04:LTS | linux-oracle-5.0 | 0, 5.0.0-1007.12~18.04.1, 5.0.0-1008.13~18.04.1 |
…and 26 more
Timeline
- Feb 17, 2021 CVE Published
- May 29, 2021 EPSS Score
- Jul 31, 2021 EPSS Score
- Sep 30, 2021 EPSS Score
- Nov 30, 2021 EPSS Score
- Jan 6, 2022 EPSS Score
- Apr 1, 2022 EPSS Score
- Apr 2, 2022 EPSS Score
- Jun 2, 2022 EPSS Score
- Aug 3, 2022 EPSS Score
- Oct 3, 2022 EPSS Score
- Dec 3, 2022 EPSS Score
References
- https://ubuntu.com/security/CVE-2021-20239 third-party-advisory
- https://www.zerodayinitiative.com/advisories/ZDI-21-100/ third-party-advisory
- https://gist.github.com/Ga-ryo/2ec958e78f55c5d18558960f3fe1c6ec third-party-advisory
- https://ubuntu.com/security/notices/USN-4878-1 vendor-advisory
- https://ubuntu.com/security/notices/USN-4910-1 vendor-advisory
- https://www.cve.org/CVERecord?id=CVE-2021-20239 third-party-advisory