VDB
CVE-2020-29368
CVE-2020-29368
PUBLISHED
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 0.10% · 27.7th percentile
Risk Scores
EPSS Score
0.10%
27.7th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Ubuntu:20.04:LTS | linux-azure-fde | 5.4.0-1064.67+cvm1.1, 0, 5.4.0-1063.66+cvm2.2 |
| Ubuntu:18.04:LTS | linux-oracle-5.3 | 5.3.0-1024.26~18.04.1, 5.3.0-1027.29~18.04.1, 5.3.0-1030.32~18.04.1 |
| Ubuntu:20.04:LTS | linux-oem-5.6 | 5.6.0-1036.39, 5.6.0-1026.26, 5.6.0-1033.35 |
| Ubuntu:18.04:LTS | linux-oracle-5.4 | 5.4.0-1021.21~18.04.1, 5.4.0-1019.19~18.04.1, 0 |
| Ubuntu:18.04:LTS | linux-hwe-5.4 | 5.4.0-42.46~18.04.1, 5.4.0-39.43~18.04.1, 0 |
| Ubuntu:16.04:LTS | linux-aws-hwe | 4.15.0-1073.77~16.04.1, 4.15.0-1058.60~16.04.1, 4.15.0-1045.47~16.04.1 |
| Ubuntu:18.04:LTS | linux-oracle | 4.15.0-1026.29, 4.15.0-1050.54, 4.15.0-1047.51 |
| Ubuntu:18.04:LTS | linux-gcp-edge | 4.18.0-1011.12~18.04.1, *, 4.18.0-1009.10~18.04.1 |
| Ubuntu:18.04:LTS | linux-hwe-edge | 5.0.0-20.21~18.04.1, 5.0.0-15.16~18.04.1, 5.0.0-17.18~18.04.1 |
| Ubuntu:22.04:LTS | linux-riscv | 5.15.0-1026.30, 5.15.0-1022.26, 0 |
| Ubuntu:Pro:FIPS:20.04:LTS | linux-aws-fips | 0, 5.4.0-1021.21+fips2 |
| Ubuntu:18.04:LTS | linux-azure-4.15 | 4.15.0-1089.99, 4.15.0-1091.101, 4.15.0-1082.92 |
| Ubuntu:20.04:LTS | linux-raspi2 | 5.4.0-1004.4, 5.4.0-1006.6, 5.3.0-1017.19 |
| 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 | 5.3.0-1017.18~18.04.1, 5.3.0-1032.34~18.04.1, 5.3.0-1030.32~18.04.1 |
| Ubuntu:18.04:LTS | linux-snapdragon | 4.15.0-1060.66, 4.15.0-1065.72, 4.15.0-1066.73 |
| Ubuntu:Pro:FIPS-updates:20.04:LTS | linux-aws-fips | 0, 5.4.0-1021.21+fips2 |
| Ubuntu:20.04:LTS | linux | 5.4.0-18.22, 5.4.0-26.30, 5.4.0-28.32 |
| Ubuntu:20.04:LTS | linux-riscv | 5.4.0-24.28, 5.4.0-30.34, 0 |
| Ubuntu:18.04:LTS | linux-raspi2 | 4.15.0-1027.29, 0, 4.13.0-1005.5 |
…and 47 more
Timeline
- Nov 28, 2020 CVE Published
- Apr 14, 2021 EPSS Score
- Jun 22, 2021 EPSS Score
- Aug 24, 2021 EPSS Score
- Oct 25, 2021 EPSS Score
- Jan 6, 2022 EPSS Score
- Feb 4, 2022 EPSS Score
- Feb 27, 2022 EPSS Score
- Apr 1, 2022 EPSS Score
- May 1, 2022 EPSS Score
- Jul 2, 2022 EPSS Score
- Sep 4, 2022 EPSS Score
References
- https://ubuntu.com/security/CVE-2020-29368 third-party-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://ubuntu.com/security/notices/USN-4752-1 vendor-advisory
- https://www.cve.org/CVERecord?id=CVE-2020-29368 third-party-advisory