VDB
CVE-2020-27830
CVE-2020-27830
PUBLISHED
A vulnerability was found in Linux Kernel where in the spk_ttyio_receive_buf2() function, it would dereference spk_ttyio_synth without checking whether it is NULL or not, and may lead to a NULL-ptr deref crash.
EPSS 0.20% · 41.9th percentile
Risk Scores
EPSS Score
0.20%
41.9th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Ubuntu:18.04:LTS | linux-gcp-5.3 | 5.3.0-1010.11~18.04.1, 5.3.0-1012.13~18.04.1, 5.3.0-1014.15~18.04.1 |
| Ubuntu:18.04:LTS | linux-oracle-5.4 | 5.4.0-1025.25~18.04.1, 5.4.0-1019.19~18.04.1, 0 |
| Ubuntu:Pro:FIPS:20.04:LTS | linux-azure-fips | *, 0 |
| Ubuntu:16.04:LTS | linux-gcp | 4.10.0-1007.7, 4.15.0-1014.14~16.04.1, 4.13.0-1017.21 |
| Ubuntu:18.04:LTS | linux-oracle | 4.15.0-1054.58, 4.15.0-1050.54, 4.15.0-1059.65 |
| Ubuntu:20.04:LTS | linux-kvm | 5.4.0-1011.11, 0, 5.3.0-1003.3 |
| Ubuntu:18.04:LTS | linux-aws-5.3 | *, 5.3.0-1033.35, 5.3.0-1023.25~18.04.1 |
| Ubuntu:18.04:LTS | linux-azure-5.3 | *, *, * |
| Ubuntu:18.04:LTS | linux-kvm | 4.15.0-1026.26, 4.15.0-1023.23, 4.15.0-1021.21 |
| Ubuntu:18.04:LTS | linux-hwe | 5.3.0-42.34~18.04.1, *, * |
| Ubuntu:18.04:LTS | linux-gcp-4.15 | 4.15.0-1071.81, 4.15.0-1077.87, 4.15.0-1078.88 |
| Ubuntu:18.04:LTS | linux-azure | 4.15.0-1013.13, 0, 4.15.0-1030.31 |
| Ubuntu:20.04:LTS | linux-oracle | 5.4.0-1018.18, 5.4.0-1019.19, 5.4.0-1022.22 |
| Ubuntu:18.04:LTS | linux-azure-4.15 | 4.15.0-1103.114, 4.15.0-1082.92, 4.15.0-1083.93 |
| Ubuntu:18.04:LTS | linux-aws-5.0 | 5.0.0-1027.30, 5.0.0-1025.28, 5.0.0-1024.27~18.04.1 |
| Ubuntu:16.04:LTS | linux-hwe | *, 0, 4.8.0-39.42~16.04.1 |
| Ubuntu:20.04:LTS | linux-raspi2 | 5.4.0-1004.4, 5.4.0-1006.6, 5.3.0-1014.16 |
| Ubuntu:18.04:LTS | linux-raspi-5.4 | 5.4.0-1015.15~18.04.1, 5.4.0-1013.13~18.04.1, 5.4.0-1028.31~18.04.1 |
| Ubuntu:20.04:LTS | linux-azure | 5.3.0-1008.9, 5.4.0-1009.9, 5.4.0-1022.22 |
| Ubuntu:18.04:LTS | linux-gke-5.4 | *, *, 5.4.0-1035.37~18.04.1 |
…and 48 more
Exploit Intelligence
- CVE-2021-3493.yara (github-yara)
- CVE-2021-3493.yara (github-yara)
- CVE-2021-3493.yara (github-yara)
- CVE-2021-3493.yara (github-yara)
- CVE-2021-3493.yara (github-yara)
- CVE-2021-3493.yara (github-yara)
Timeline
- Dec 7, 2020 CVE Published
- May 14, 2021 EPSS Score
- Jul 17, 2021 EPSS Score
- Sep 16, 2021 EPSS Score
- Nov 17, 2021 EPSS Score
- Jan 18, 2022 EPSS Score
- Feb 4, 2022 EPSS Score
- Mar 20, 2022 EPSS Score
- Apr 1, 2022 EPSS Score
- May 21, 2022 EPSS Score
- Jul 23, 2022 EPSS Score
- Sep 23, 2022 EPSS Score
References
- https://ubuntu.com/security/CVE-2020-27830 third-party-advisory
- https://www.openwall.com/lists/oss-security/2020/12/07/1 third-party-advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f0992098cadb4c9c6a00703b66cafe604e178fea third-party-advisory
- https://ubuntu.com/security/notices/USN-4749-1 vendor-advisory
- https://ubuntu.com/security/notices/USN-4750-1 vendor-advisory
- https://ubuntu.com/security/notices/USN-4751-1 vendor-advisory
- https://ubuntu.com/security/notices/USN-4912-1 vendor-advisory
- https://www.cve.org/CVERecord?id=CVE-2020-27830 third-party-advisory