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CVE-2020-36557 PUBLISHED

A race condition in the Linux kernel before 5.6.2 between the VT_DISALLOCATE ioctl and closing/opening of ttys could lead to a use-after-free.

EPSS 0.02% · 4.4th percentile

Risk Scores

EPSS Score
0.02%
4.4th percentile

Affected Products

VendorProductVersions
Ubuntu:16.04:LTSlinux-aws-hwe4.15.0-1036.38~16.04.1, 4.15.0-1039.41~16.04.1, 4.15.0-1040.42~16.04.1
Ubuntu:Pro:14.04:LTSlinux-aws4.4.0-1058.62, 4.4.0-1059.63, 4.4.0-1060.64
Ubuntu:18.04:LTSlinux-oracle4.15.0-1033.36, 4.15.0-1035.39, 4.15.0-1037.41
Ubuntu:16.04:LTSlinux-hwe-edge4.8.0-34.36~16.04.1, 4.10.0-14.16~16.04.1, 4.10.0-19.21~16.04.1
Ubuntu:20.04:LTSlinux-raspi25.3.0-1015.17, 5.3.0-1017.19, 5.4.0-1004.4
Ubuntu:20.04:LTSlinux-oem-5.135.13.0-1029.36, 0, 5.13.0-1009.10
Ubuntu:Pro:FIPS-updates:18.04:LTSlinux-fips0, 4.15.0-1027.32
Ubuntu:16.04:LTSlinux-azure4.15.0-1071.76, 0, 4.11.0-1009.9
Ubuntu:20.04:LTSlinux-oracle-5.135.13.0-1036.43~20.04.1, 5.13.0-1034.40~20.04.1, 5.13.0-1033.39~20.04.1
Ubuntu:Pro:14.04:LTSlinux-azure4.15.0-1060.65~14.04.1, 0, 4.15.0-1023.24~14.04.1
Ubuntu:20.04:LTSlinux-oem-5.65.6.0-1013.13, 5.6.0-1053.57, 5.6.0-1052.56
Ubuntu:20.04:LTSlinux-gcp-5.115.11.0-1029.33~20.04.3, 5.11.0-1028.32~20.04.1, 5.11.0-1026.29~20.04.1
Ubuntu:Pro:FIPS:18.04:LTSlinux-aws-fips0, 4.15.0-2000.4
Ubuntu:18.04:LTSlinux-gkeop-5.45.4.0-1012.13~18.04.1, 5.4.0-1051.54~18.04.1, 5.4.0-1049.52~18.04.1
Ubuntu:20.04:LTSlinux-oracle-5.85.8.0-1038.39~20.04.1, 0, 5.8.0-1031.32~20.04.2
Ubuntu:20.04:LTSlinux-azure-5.85.8.0-1041.44~20.04.1, 5.8.0-1043.46~20.04.1, 5.8.0-1042.45~20.04.1
Ubuntu:16.04:LTSlinux-oracle4.15.0-1010.12~16.04.1, 4.15.0-1025.28~16.04.1, 4.15.0-1023.26~16.04.1
Ubuntu:20.04:LTSlinux-oracle-5.115.11.0-1016.17~20.04.1, 5.11.0-1008.8~20.04.1, 5.11.0-1013.14~20.04.1
Ubuntu:18.04:LTSlinux-hwe-edge0, 5.0.0-15.16~18.04.1, 5.0.0-16.17~18.04.1
Ubuntu:Pro:FIPS:18.04:LTSlinux-azure-fips0, 4.15.0-1002.2

…and 49 more

Timeline

References

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