VDB
CVE-2021-0920
CVE-2021-0920
PUBLISHED
KEV
In unix_scm_to_skb of af_unix.c, there is a possible use after free bug due to a race condition. 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-196926917References: Upstream kernel
EPSS 0.93% · 76.6th percentile
Risk Scores
EPSS Score
0.93%
76.6th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Ubuntu:Pro:16.04:LTS | linux-azure | 4.15.0-1050.55, 4.15.0-1046.50, 4.15.0-1045.49 |
| Ubuntu:18.04:LTS | linux-gke-4.15 | 4.15.0-1042.44, 4.15.0-1044.46, 4.15.0-1045.48 |
| Ubuntu:Pro:FIPS:18.04:LTS | linux-gcp-fips | 4.15.0-1001.1, 0 |
| Ubuntu:18.04:LTS | linux-snapdragon | 4.15.0-1102.111, 4.4.0-1081.86, 0 |
| Ubuntu:18.04:LTS | linux-gkeop-5.4 | 5.4.0-1009.10~18.04.1, *, 5.4.0-1022.23~18.04.1 |
| Ubuntu:20.04:LTS | linux-bluefield | 5.4.0-1016.19, 5.4.0-1012.15, 5.4.0-1013.16 |
| Ubuntu:Pro:FIPS-updates:20.04:LTS | linux-aws-fips | 0, * |
| Ubuntu:Pro:FIPS-updates:20.04:LTS | linux-gcp-fips | *, 0 |
| Ubuntu:20.04:LTS | linux-raspi2 | 0, 5.3.0-1014.16, 5.4.0-1006.6 |
| Ubuntu:Pro:FIPS:16.04:LTS | linux-fips | 4.4.0-1054.60, 4.4.0-1052.58, 4.4.0-1049.55 |
| Ubuntu:18.04:LTS | linux-hwe-edge | *, *, 5.3.0-24.26~18.04.2 |
| Ubuntu:Pro:16.04:LTS | linux | 4.4.0-15.31, 4.4.0-16.32, 4.4.0-17.33 |
| Ubuntu:20.04:LTS | linux-aws-5.8 | 5.8.0-1042.44~20.04.1, 5.8.0-1038.40~20.04.1, 5.8.0-1035.37~20.04.1 |
| Ubuntu:Pro:FIPS:20.04:LTS | linux-fips | 0, 5.4.0-1007.8 |
| Ubuntu:24.04:LTS | linux-raspi-realtime | 6.8.0-2019.20, 0 |
| Ubuntu:Pro:14.04:LTS | linux-aws | 4.4.0-1034.37, 4.4.0-1019.19, 4.4.0-1017.17 |
| Ubuntu:Pro:FIPS:18.04:LTS | linux-fips | 4.15.0-1011.12, 0 |
| Ubuntu:20.04:LTS | linux-oracle-5.11 | 0, 5.11.0-1017.18~20.04.1, 5.11.0-1008.8~20.04.1 |
| Ubuntu:20.04:LTS | linux-oem-5.13 | 5.13.0-1009.10, 5.13.0-1010.11, 5.13.0-1012.16 |
| Ubuntu:Pro:FIPS-updates:18.04:LTS | linux-fips | 4.15.0-1063.71, 4.15.0-1068.77, 4.15.0-1046.53 |
…and 73 more
Exploit Intelligence
- Race condition during SCM_RIGHTS garbage collection (Google Android) (gpz)
- Race condition during SCM_RIGHTS garbage collection (Google Android) (gpz)
- Race condition during SCM_RIGHTS garbage collection (Google Android) (gpz)
- Race condition during SCM_RIGHTS garbage collection (Google Android) (gpz)
- Race condition during SCM_RIGHTS garbage collection (Google Android) (gpz)
- Race condition during SCM_RIGHTS garbage collection (Google Android) (gpz)
- CVE-2022-32250.yara (github-yara)
- CVE-2022-32250.yara (github-yara)
- CVE-2022-32250.yara (github-yara)
- CVE-2022-32250.yara (github-yara)
…and 36 more exploits
Timeline
- Nov 5, 2021 PoC Published
- Dec 15, 2021 CVE Published
- Dec 16, 2021 EPSS Score
- Feb 4, 2022 EPSS Score
- Feb 8, 2022 EPSS Score
- May 23, 2022 CISA KEV Added
- May 28, 2022 EPSS Score
- Jul 22, 2022 EPSS Score
- Sep 15, 2022 EPSS Score
- Nov 8, 2022 EPSS Score
- Jan 1, 2023 EPSS Score
- Feb 24, 2023 EPSS Score
References
- https://ubuntu.com/security/CVE-2021-0920 third-party-advisory
- https://git.kernel.org/linus/cbcf01128d0a92e131bd09f1688fe032480b65ca third-party-advisory
- https://source.android.com/security/bulletin/2021-11-01 third-party-advisory
- https://ubuntu.com/security/notices/USN-5361-1 vendor-advisory
- https://www.cve.org/CVERecord?id=CVE-2021-0920 third-party-advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog third-party-advisory
- https://ubuntu.com/security/notices/USN-7720-1 vendor-advisory
- Multiples vulnérabilités dans les produits Juniper advisory