VDB
CVE-2018-1000200
CVE-2018-1000200
PUBLISHED
The Linux Kernel versions 4.14, 4.15, and 4.16 has a null pointer dereference which can result in an out of memory (OOM) killing of large mlocked processes. The issue arises from an oom killed process's final thread calling exit_mmap(), which calls munlock_vma_pages_all() for mlocked vmas.This can happen synchronously with the oom reaper's unmap_page_range() since the vma's VM_LOCKED bit is cleared before munlocking (to determine if any other vmas share the memory and are mlocked).
EPSS 0.08% · 24.5th percentile
Risk Scores
EPSS Score
0.08%
24.5th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Ubuntu:16.04:LTS | linux-hwe | 4.8.0-36.36~16.04.1, 0, * |
| Ubuntu:18.04:LTS | linux-gcp | 4.15.0-1005.5, 4.15.0-1009.9, 4.15.0-1015.15 |
| Ubuntu:18.04:LTS | linux-azure | 0, 4.15.0-1002.2, 4.15.0-1008.8 |
| Ubuntu:16.04:LTS | linux-azure | 4.13.0-1018.21, 4.11.0-1014.14, 4.13.0-1014.17 |
| Ubuntu:18.04:LTS | linux-oem | 4.15.0-1013.16, 0, 4.15.0-1002.3 |
| Ubuntu:18.04:LTS | linux | 4.15.0-10.11, 0, 4.13.0-16.19 |
| Ubuntu:16.04:LTS | linux-gcp | 4.13.0-1002.5, 0, 4.10.0-1004.4 |
| Ubuntu:18.04:LTS | linux-raspi2 | 4.15.0-1013.14, 4.15.0-1020.22, 4.15.0-1012.13 |
| Ubuntu:18.04:LTS | linux-kvm | 4.15.0-1011.11, 4.15.0-1010.10, 4.15.0-1008.8 |
| Ubuntu:18.04:LTS | linux-aws | 4.15.0-1007.7, 4.15.0-1003.3, 4.15.0-1001.1 |
Exploit Intelligence
- homjxi0e/CVE-2017-2671 (github-poc)
- homjxi0e/CVE-2017-2671 (github-poc)
- homjxi0e/CVE-2017-2671 (github-poc)
- homjxi0e/CVE-2017-2671 (github-poc)
- homjxi0e/CVE-2017-2671 (github-poc)
- 104397 (circl)
- USN-3752-2 (circl)
- [linux-kernel] 20180417 [patch] mm, oom: fix concurrent munlock and oom reaper unmap (circl)
- USN-3752-1 (circl)
- [oss-security] 20180424 CVE-2018-1000200 (Linux): Bad memory access on oom kill of large mlocked process (circl)
…and 5 more exploits
Timeline
- Apr 23, 2018 CVE Published
- Apr 14, 2021 EPSS Score
- Jun 23, 2021 EPSS Score
- Aug 24, 2021 EPSS Score
- Oct 26, 2021 EPSS Score
- Dec 27, 2021 EPSS Score
- Feb 4, 2022 EPSS Score
- Feb 28, 2022 EPSS Score
- May 2, 2022 EPSS Score
- Sep 5, 2022 EPSS Score
- Nov 6, 2022 EPSS Score
- Jan 8, 2023 EPSS Score
References
- https://ubuntu.com/security/CVE-2018-1000200 third-party-advisory
- http://openwall.com/lists/oss-security/2018/04/24/3 third-party-advisory
- https://ubuntu.com/security/notices/USN-3752-1 vendor-advisory
- https://ubuntu.com/security/notices/USN-3752-2 vendor-advisory
- https://ubuntu.com/security/notices/USN-3752-3 vendor-advisory
- https://www.cve.org/CVERecord?id=CVE-2018-1000200 third-party-advisory