VDB
CVE-2020-29368
CVE-2020-29368
PUBLISHED
CVSS 7 HIGH
An issue was discovered in __split_huge_pmd in mm/huge_memory.c in the Linux kernel before 5.7.5. The copy-on-write implementation can grant unintended write access because of a race condition in a THP mapcount check, aka CID-c444eb564fb1.
EPSS 0.37% · 30.3th percentile
Risk Scores
CVSS 3.1
7
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS Score
0.37%
30.3th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Ubuntu:20.04:LTS | linux-azure-fde | 5.4.0-1078.81+cvm1.1, 5.4.0-1076.79+cvm1.1, 5.4.0-1074.77+cvm1.1 |
| Ubuntu:18.04:LTS | linux-oracle-5.3 | 5.3.0-1014.15~18.04.1, 5.3.0-1018.20~18.04.1, 5.3.0-1024.26~18.04.1 |
| Ubuntu:20.04:LTS | linux-oem-5.6 | 5.6.0-1023.23, 5.6.0-1020.20, 5.6.0-1034.36 |
| Ubuntu:18.04:LTS | linux-oracle-5.4 | 5.4.0-1019.19~18.04.1, 0, 5.4.0-1021.21~18.04.1 |
| Ubuntu:18.04:LTS | linux-hwe-5.4 | 5.4.0-39.43~18.04.1, 5.4.0-37.41~18.04.1, 0 |
| Ubuntu:16.04:LTS | linux-aws-hwe | 4.15.0-1067.71~16.04.1, 0, 4.15.0-1060.62~16.04.1 |
| Ubuntu:18.04:LTS | linux-oracle | 4.15.0-1018.20, 4.15.0-1025.28, 4.15.0-1023.26 |
| Ubuntu:18.04:LTS | linux-gcp-edge | 4.18.0-1007.8~18.04.1, 4.18.0-1006.7~18.04.1, 4.18.0-1005.6~18.04.1 |
| Ubuntu:18.04:LTS | linux-hwe-edge | 0, 5.3.0-23.25~18.04.2, 5.3.0-23.25~18.04.1 |
| Ubuntu:22.04:LTS | linux-riscv | 5.15.0-1028.32, 5.15.0-1027.31, 5.15.0-1007.7 |
| Ubuntu:Pro:FIPS:20.04:LTS | linux-aws-fips | 5.4.0-1021.21+fips2, 0 |
| Ubuntu:18.04:LTS | linux-azure-4.15 | 4.15.0-1092.102, 4.15.0-1091.101, 4.15.0-1083.93 |
| Ubuntu:20.04:LTS | linux-raspi2 | 5.3.0-1007.8, 5.4.0-1004.4, 5.4.0-1006.6 |
| Ubuntu:Pro:FIPS-updates:20.04:LTS | linux-azure-fips | 0, 5.4.0-1022.22+fips1 |
| Ubuntu:18.04:LTS | linux-gcp-5.3 | 5.3.0-1026.28~18.04.1, 5.3.0-1020.22~18.04.1, 5.3.0-1008.9~18.04.1 |
| Ubuntu:18.04:LTS | linux-snapdragon | 4.4.0-1077.82, 4.15.0-1076.83, 4.15.0-1074.81 |
| Ubuntu:Pro:FIPS-updates:20.04:LTS | linux-aws-fips | 0, 5.4.0-1021.21+fips2 |
| Ubuntu:20.04:LTS | linux | 5.3.0-18.19, 5.4.0-24.28, 5.4.0-25.29 |
| Ubuntu:20.04:LTS | linux-riscv | 0, 5.4.0-26.30, 5.4.0-27.31 |
| Ubuntu:18.04:LTS | linux-raspi2 | 4.15.0-1012.13, 0, 4.13.0-1005.5 |
…and 47 more
Timeline
- Nov 28, 2020 CVE Published
- Apr 14, 2021 EPSS Score
- Jun 23, 2021 EPSS Score
- Aug 26, 2021 EPSS Score
- Oct 28, 2021 EPSS Score
- Jan 6, 2022 EPSS Score
- Feb 4, 2022 EPSS Score
- Mar 4, 2022 EPSS Score
- Apr 1, 2022 EPSS Score
- May 6, 2022 EPSS Score
- Jul 9, 2022 EPSS Score
- Sep 11, 2022 EPSS Score
References
- https://ubuntu.com/security/CVE-2020-29368 advisory
- https://ubuntu.com/security/notices/USN-4752-1 advisory
- https://git.kernel.org/linus/c444eb564fb16645c172d550359cb3d75fe8a040 third-party-advisory
- https://bugs.chromium.org/p/project-zero/issues/detail?id=2045 third-party-advisory
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.7.5 third-party-advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c444eb564fb16645c172d550359cb3d75fe8a040 third-party-advisory
- https://www.cve.org/CVERecord?id=CVE-2020-29368 third-party-advisory