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UBUNTU-CVE-2020-27830

MEDIUM5.5

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 de

Published Dec 7, 2020

Modified 6 months ago

Fix available

Details

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.

Affected Packages

Ubuntu:25.04linux

Fixed in:

6.11.0-8.8

Ubuntu:18.04:LTSlinux

Affected versions:

4.13.0-16.194.13.0-17.204.13.0-25.294.13.0-32.354.15.0-10.114.15.0-101.1024.15.0-106.1074.15.0-108.1094.15.0-109.1104.15.0-111.112+58 more

Fixed in:

4.15.0-136.140

Ubuntu:24.04:LTSlinux

Fixed in:

6.5.0-9.9

Ubuntu:20.04:LTSlinux

Affected versions:

5.3.0-18.195.3.0-24.265.4.0-18.225.4.0-21.255.4.0-24.285.4.0-25.295.4.0-26.305.4.0-28.325.4.0-29.335.4.0-31.35+20 more

Fixed in:

5.4.0-66.74

Ubuntu:16.04:LTSlinux

Affected versions:

4.2.0-16.194.2.0-17.214.2.0-19.234.3.0-1.104.3.0-2.114.3.0-5.164.3.0-6.174.3.0-7.18

Fixed in:

4.4.0-2.16

Ubuntu:22.04:LTSlinux

Fixed in:

5.13.0-19.19

Ubuntu:14.04:LTSlinux

Fixed in:

3.11.0-12.19

Ubuntu:22.04:LTSlinux-aws

Fixed in:

5.13.0-1005.6

Ubuntu:16.04:LTSlinux-aws

Fixed in:

4.4.0-1001.10

Ubuntu:14.04:LTSlinux-aws

Fixed in:

4.4.0-1002.2

Ubuntu:20.04:LTSlinux-aws

Affected versions:

5.3.0-1003.35.3.0-1008.95.3.0-1009.105.3.0-1010.115.4.0-1005.55.4.0-1007.75.4.0-1008.85.4.0-1009.95.4.0-1011.115.4.0-1015.15+14 more

Fixed in:

5.4.0-1038.40

Ubuntu:18.04:LTSlinux-aws

Affected versions:

4.15.0-1001.14.15.0-1003.34.15.0-1005.54.15.0-1006.64.15.0-1007.74.15.0-1009.94.15.0-1010.104.15.0-1011.114.15.0-1016.164.15.0-1017.17+47 more

Fixed in:

4.15.0-1094.101

Ubuntu:25.04linux-aws

Fixed in:

6.11.0-1004.4

Ubuntu:24.04:LTSlinux-aws

Fixed in:

6.5.0-1008.8

Ubuntu:Pro:18.04:LTSlinux-aws-5.0

Affected versions:

5.0.0-1021.24~18.04.15.0.0-1022.25~18.04.15.0.0-1023.26~18.04.15.0.0-1024.27~18.04.15.0.0-1025.285.0.0-1027.30

Ubuntu:20.04:LTSlinux-aws-5.11

Fixed in:

5.11.0-1009.9~20.04.2

Ubuntu:20.04:LTSlinux-aws-5.13

Fixed in:

5.13.0-1008.9~20.04.2

Ubuntu:20.04:LTSlinux-aws-5.15

Affected versions:

5.15.0-1014.18~20.04.1

Fixed in:

5.15.0-1015.19~20.04.1

Ubuntu:Pro:18.04:LTSlinux-aws-5.3

Affected versions:

5.3.0-1016.17~18.04.15.3.0-1017.18~18.04.15.3.0-1019.21~18.04.15.3.0-1023.25~18.04.15.3.0-1028.30~18.04.15.3.0-1030.32~18.04.15.3.0-1032.34~18.04.25.3.0-1033.355.3.0-1034.365.3.0-1035.37

Ubuntu:18.04:LTSlinux-aws-5.4

Affected versions:

5.4.0-1018.18~18.04.15.4.0-1020.20~18.04.25.4.0-1022.22~18.04.15.4.0-1024.24~18.04.15.4.0-1025.25~18.04.15.4.0-1028.29~18.04.15.4.0-1029.30~18.04.15.4.0-1030.31~18.04.15.4.0-1032.33~18.04.15.4.0-1034.35~18.04.1+2 more

Fixed in:

5.4.0-1038.40~18.04.1

Ubuntu:20.04:LTSlinux-aws-5.8

Fixed in:

5.8.0-1035.37~20.04.1

Ubuntu:22.04:LTSlinux-aws-6.5

Fixed in:

6.5.0-1008.8~22.04.1

Ubuntu:22.04:LTSlinux-aws-6.8

Fixed in:

6.8.0-1009.9~22.04.2

Ubuntu:Pro:FIPS-updates:18.04:LTSlinux-aws-fips

Affected versions:

4.15.0-2000.44.15.0-2018.184.15.0-2021.214.15.0-2022.224.15.0-2024.244.15.0-2025.254.15.0-2026.264.15.0-2027.274.15.0-2030.314.15.0-2031.32+4 more

Fixed in:

4.15.0-2037.39

Ubuntu:FIPS-preview:22.04:LTSlinux-aws-fips

Affected versions:

5.15.0-1042.47+fips1

Ubuntu:Pro:FIPS:18.04:LTSlinux-aws-fips

Affected versions:

4.15.0-2000.4

Ubuntu:Pro:FIPS-updates:20.04:LTSlinux-aws-fips

Affected versions:

5.4.0-1021.21+fips2

Fixed in:

5.4.0-1069.73+fips2

Ubuntu:Pro:FIPS:20.04:LTSlinux-aws-fips

Affected versions:

5.4.0-1021.21+fips2

Ubuntu:Pro:FIPS-updates:22.04:LTSlinux-aws-fips

Affected versions:

5.15.0-1051.56+fips1

Fixed in:

5.15.0-1052.57+fips1

Ubuntu:FIPS:20.04:LTSlinux-aws-fips

Affected versions:

5.4.0-1021.21+fips2

Ubuntu:Pro:FIPS-preview:22.04:LTSlinux-aws-fips

Affected versions:

5.15.0-1042.47+fips1

Fixed in:

5.15.0-1051.56+fips1

Ubuntu:FIPS-updates:22.04:LTSlinux-aws-fips

Affected versions:

5.15.0-1051.56+fips1

Ubuntu:FIPS:18.04:LTSlinux-aws-fips

Affected versions:

4.15.0-2000.4

Ubuntu:FIPS-updates:18.04:LTSlinux-aws-fips

Affected versions:

4.15.0-2000.44.15.0-2018.184.15.0-2021.214.15.0-2022.224.15.0-2024.244.15.0-2025.254.15.0-2026.264.15.0-2027.274.15.0-2030.314.15.0-2031.32+4 more

Ubuntu:FIPS-updates:20.04:LTSlinux-aws-fips

Affected versions:

5.4.0-1021.21+fips2

Ubuntu:16.04:LTSlinux-aws-hwe

Affected versions:

4.15.0-1030.31~16.04.14.15.0-1031.33~16.04.14.15.0-1032.34~16.04.14.15.0-1033.35~16.04.14.15.0-1035.37~16.04.14.15.0-1036.38~16.04.14.15.0-1039.41~16.04.14.15.0-1040.42~16.04.14.15.0-1041.43~16.04.14.15.0-1043.45~16.04.1+27 more

Fixed in:

4.15.0-1094.101~16.04.1

Ubuntu:25.04linux-azure

Fixed in:

6.11.0-1004.4

Ubuntu:24.04:LTSlinux-azure

Fixed in:

6.5.0-1007.7

Ubuntu:Pro:18.04:LTSlinux-azure

Affected versions:

4.15.0-1002.24.15.0-1003.34.15.0-1004.44.15.0-1008.84.15.0-1009.94.15.0-1012.124.15.0-1013.134.15.0-1014.144.15.0-1018.184.15.0-1019.19+34 more

Ubuntu:20.04:LTSlinux-azure

Affected versions:

5.3.0-1003.35.3.0-1008.95.3.0-1009.105.4.0-1006.65.4.0-1008.85.4.0-1009.95.4.0-1010.105.4.0-1012.125.4.0-1016.165.4.0-1019.19+11 more

Fixed in:

5.4.0-1040.42

Ubuntu:16.04:LTSlinux-azure

Affected versions:

4.11.0-1009.94.11.0-1011.114.11.0-1013.134.11.0-1014.144.11.0-1015.154.11.0-1016.164.13.0-1005.74.13.0-1006.84.13.0-1007.94.13.0-1009.12+58 more

Fixed in:

4.15.0-1108.120~16.04.1

Ubuntu:Pro:14.04:LTSlinux-azure

Affected versions:

4.15.0-1023.24~14.04.14.15.0-1030.31~14.04.14.15.0-1031.32~14.04.14.15.0-1032.33~14.04.24.15.0-1035.36~14.04.24.15.0-1036.38~14.04.24.15.0-1037.39~14.04.24.15.0-1039.41~14.04.24.15.0-1040.44~14.04.14.15.0-1041.45~14.04.1+26 more

Fixed in:

4.15.0-1108.120~14.04.1

Ubuntu:22.04:LTSlinux-azure

Fixed in:

5.13.0-1006.7

Ubuntu:18.04:LTSlinux-azure-4.15

Affected versions:

4.15.0-1082.924.15.0-1083.934.15.0-1089.994.15.0-1091.1014.15.0-1092.1024.15.0-1093.1034.15.0-1095.1054.15.0-1096.1064.15.0-1099.1104.15.0-1100.111+4 more

Fixed in:

4.15.0-1108.120

Ubuntu:20.04:LTSlinux-azure-5.11

Fixed in:

5.11.0-1007.7~20.04.2

Ubuntu:20.04:LTSlinux-azure-5.13

Fixed in:

5.13.0-1009.10~20.04.2

Ubuntu:20.04:LTSlinux-azure-5.15

Fixed in:

5.15.0-1007.8~20.04.1

Ubuntu:Pro:18.04:LTSlinux-azure-5.3

Affected versions:

5.3.0-1007.8~18.04.15.3.0-1008.9~18.04.15.3.0-1009.10~18.04.15.3.0-1010.11~18.04.15.3.0-1012.13~18.04.15.3.0-1013.14~18.04.15.3.0-1016.17~18.04.15.3.0-1018.19~18.04.15.3.0-1019.20~18.04.15.3.0-1020.21~18.04.1+6 more

Ubuntu:18.04:LTSlinux-azure-5.4

Affected versions:

5.4.0-1020.20~18.04.15.4.0-1022.22~18.04.15.4.0-1023.23~18.04.15.4.0-1025.25~18.04.15.4.0-1026.26~18.04.15.4.0-1031.32~18.04.15.4.0-1032.33~18.04.15.4.0-1034.35~18.04.15.4.0-1035.36~18.04.15.4.0-1036.38~18.04.1+1 more

Fixed in:

5.4.0-1040.42~18.04.1

Ubuntu:20.04:LTSlinux-azure-5.8

Fixed in:

5.8.0-1033.35~20.04.1

Ubuntu:24.04:LTSlinux-azure-6.11

Fixed in:

6.11.0-1008.8~24.04.1

Ubuntu:22.04:LTSlinux-azure-6.5

Fixed in:

6.5.0-1007.7~22.04.1

Ubuntu:22.04:LTSlinux-azure-6.8

Fixed in:

6.8.0-1008.8~22.04.1

Ubuntu:Pro:18.04:LTSlinux-azure-edge

Affected versions:

4.18.0-1006.6~18.04.14.18.0-1007.7~18.04.14.18.0-1008.8~18.04.15.0.0-1012.12~18.04.2

Ubuntu:22.04:LTSlinux-azure-fde

Fixed in:

5.15.0-1019.24.1

Ubuntu:20.04:LTSlinux-azure-fde-5.15

Fixed in:

5.15.0-1019.24~20.04.1.1

Ubuntu:Pro:FIPS-updates:20.04:LTSlinux-azure-fips

Affected versions:

5.4.0-1022.22+fips1

Fixed in:

5.4.0-1073.76+fips1

Ubuntu:Pro:FIPS:20.04:LTSlinux-azure-fips

Affected versions:

5.4.0-1022.22+fips1

Ubuntu:Pro:FIPS:18.04:LTSlinux-azure-fips

Affected versions:

4.15.0-1002.2

Ubuntu:Pro:FIPS-updates:18.04:LTSlinux-azure-fips

Affected versions:

4.15.0-1002.24.15.0-2006.74.15.0-2007.84.15.0-2008.94.15.0-2009.104.15.0-2012.144.15.0-2013.154.15.0-2015.174.15.0-2016.184.15.0-2017.20+1 more

Fixed in:

4.15.0-2020.23

Ubuntu:Pro:FIPS-preview:22.04:LTSlinux-azure-fips

Fixed in:

5.15.0-1053.61+fips1

Ubuntu:Pro:FIPS-updates:22.04:LTSlinux-azure-fips

Affected versions:

5.15.0-1053.61+fips1

Fixed in:

5.15.0-1058.66+fips1

Ubuntu:24.04:LTSlinux-azure-nvidia

Fixed in:

6.8.0-1013.14

Ubuntu:20.04:LTSlinux-bluefield

Affected versions:

5.4.0-1007.10

Fixed in:

5.4.0-1011.14

Ubuntu:22.04:LTS:for:NVIDIA:BlueFieldlinux-bluefield

Fixed in:

5.15.0-1011.13

Ubuntu:18.04:LTSlinux-dell300x

Affected versions:

4.15.0-1005.84.15.0-1006.104.15.0-1007.114.15.0-1009.134.15.0-1010.144.15.0-1011.15

Fixed in:

4.15.0-1012.16

Ubuntu:Pro:FIPS-updates:18.04:LTSlinux-fips

Affected versions:

4.15.0-1027.324.15.0-1029.344.15.0-1034.394.15.0-1035.404.15.0-1037.424.15.0-1038.434.15.0-1039.444.15.0-1040.454.15.0-1041.464.15.0-1044.50+7 more

Fixed in:

4.15.0-1053.61

Ubuntu:Pro:FIPS:16.04:LTSlinux-fips

Fixed in:

4.4.0-1001.1

Ubuntu:Pro:FIPS:18.04:LTSlinux-fips

Affected versions:

4.15.0-1011.12

Ubuntu:Pro:FIPS-updates:20.04:LTSlinux-fips

Fixed in:

5.4.0-1026.30

Ubuntu:Pro:FIPS-updates:22.04:LTSlinux-fips

Affected versions:

5.15.0-73.80+fips1

Fixed in:

5.15.0-92.102+fips1

Ubuntu:FIPS:16.04:LTSlinux-fips

Ubuntu:Pro:FIPS-preview:22.04:LTSlinux-fips

Fixed in:

5.15.0-73.80+fips1

Ubuntu:Pro:FIPS:16.04:LTSlinux-fips

Fixed in:

4.4.0-1003.3

Ubuntu:20.04:LTSlinux-gcp

Affected versions:

5.3.0-1004.45.3.0-1009.105.3.0-1011.125.4.0-1005.55.4.0-1007.75.4.0-1008.85.4.0-1009.95.4.0-1011.115.4.0-1015.155.4.0-1018.18+12 more

Fixed in:

5.4.0-1037.40

Ubuntu:24.04:LTSlinux-gcp

Fixed in:

6.5.0-1007.7

Ubuntu:16.04:LTSlinux-gcp

Affected versions:

4.10.0-1004.44.10.0-1006.64.10.0-1007.74.10.0-1008.84.10.0-1009.94.13.0-1002.54.13.0-1006.94.13.0-1007.104.13.0-1008.114.13.0-1011.15+50 more

Fixed in:

4.15.0-1093.106~16.04.1

Ubuntu:25.04linux-gcp

Fixed in:

6.11.0-1003.3

Ubuntu:22.04:LTSlinux-gcp

Fixed in:

5.13.0-1005.6

Ubuntu:Pro:18.04:LTSlinux-gcp

Affected versions:

4.15.0-1001.14.15.0-1003.34.15.0-1005.54.15.0-1006.64.15.0-1008.84.15.0-1009.94.15.0-1010.104.15.0-1014.144.15.0-1015.154.15.0-1017.18+28 more

Ubuntu:18.04:LTSlinux-gcp-4.15

Affected versions:

4.15.0-1071.814.15.0-1077.874.15.0-1078.884.15.0-1080.904.15.0-1081.924.15.0-1083.944.15.0-1084.954.15.0-1086.984.15.0-1087.1004.15.0-1088.101+3 more

Fixed in:

4.15.0-1093.106

Ubuntu:20.04:LTSlinux-gcp-5.11

Fixed in:

5.11.0-1009.10~20.04.1

Ubuntu:20.04:LTSlinux-gcp-5.13

Fixed in:

5.13.0-1008.9~20.04.3

Ubuntu:20.04:LTSlinux-gcp-5.15

Fixed in:

5.15.0-1006.9~20.04.1

Ubuntu:Pro:18.04:LTSlinux-gcp-5.3

Affected versions:

5.3.0-1008.9~18.04.15.3.0-1009.10~18.04.15.3.0-1010.11~18.04.15.3.0-1012.13~18.04.15.3.0-1014.15~18.04.15.3.0-1016.17~18.04.15.3.0-1017.18~18.04.15.3.0-1018.19~18.04.15.3.0-1020.22~18.04.15.3.0-1026.28~18.04.1+3 more

Ubuntu:18.04:LTSlinux-gcp-5.4

Affected versions:

5.4.0-1019.19~18.04.25.4.0-1021.21~18.04.15.4.0-1022.22~18.04.15.4.0-1024.24~18.04.15.4.0-1025.25~18.04.15.4.0-1028.29~18.04.15.4.0-1029.31~18.04.15.4.0-1030.32~18.04.15.4.0-1032.34~18.04.15.4.0-1033.35~18.04.1+2 more

Fixed in:

5.4.0-1037.40~18.04.1

Ubuntu:20.04:LTSlinux-gcp-5.8

Fixed in:

5.8.0-1032.34~20.04.1

Ubuntu:24.04:LTSlinux-gcp-6.11

Fixed in:

6.11.0-1006.6~24.04.2

Ubuntu:22.04:LTSlinux-gcp-6.5

Fixed in:

6.5.0-1010.10~22.04.3

Ubuntu:22.04:LTSlinux-gcp-6.8

Fixed in:

6.8.0-1010.11~22.04.1

Ubuntu:Pro:18.04:LTSlinux-gcp-edge

Affected versions:

4.18.0-1004.5~18.04.14.18.0-1005.6~18.04.14.18.0-1006.7~18.04.14.18.0-1007.8~18.04.14.18.0-1008.9~18.04.14.18.0-1009.10~18.04.14.18.0-1011.12~18.04.14.18.0-1012.13~18.04.14.18.0-1013.14~18.04.14.18.0-1015.16~18.04.1+2 more

Ubuntu:Pro:FIPS:20.04:LTSlinux-gcp-fips

Affected versions:

5.4.0-1021.21+fips1

Ubuntu:Pro:FIPS-updates:20.04:LTSlinux-gcp-fips

Affected versions:

5.4.0-1021.21+fips1

Fixed in:

5.4.0-1067.71~20.04.1

Ubuntu:Pro:FIPS:18.04:LTSlinux-gcp-fips

Affected versions:

4.15.0-1001.1

Ubuntu:Pro:FIPS-updates:22.04:LTSlinux-gcp-fips

Fixed in:

5.15.0-1048.56+fips1

Ubuntu:Pro:FIPS-preview:22.04:LTSlinux-gcp-fips

Fixed in:

5.15.0-1048.56+fips1

Ubuntu:Pro:FIPS-updates:18.04:LTSlinux-gcp-fips

Fixed in:

4.15.0-2013.14

Ubuntu:22.04:LTSlinux-gke

Fixed in:

5.15.0-1002.2

Ubuntu:20.04:LTSlinux-gke

Affected versions:

5.4.0-1033.355.4.0-1035.37

Fixed in:

5.4.0-1036.38

Ubuntu:24.04:LTSlinux-gke

Fixed in:

6.8.0-1003.5

Ubuntu:18.04:LTSlinux-gke-4.15

Affected versions:

4.15.0-1030.324.15.0-1032.344.15.0-1033.354.15.0-1034.364.15.0-1036.384.15.0-1037.394.15.0-1040.424.15.0-1041.434.15.0-1042.444.15.0-1044.46+22 more

Fixed in:

4.15.0-1079.84

Ubuntu:18.04:LTSlinux-gke-5.4

Affected versions:

5.4.0-1025.25~18.04.15.4.0-1027.28~18.04.15.4.0-1029.31~18.04.15.4.0-1030.32~18.04.15.4.0-1032.34~18.04.15.4.0-1033.35~18.04.15.4.0-1035.37~18.04.1

Fixed in:

5.4.0-1036.38~18.04.1

Ubuntu:22.04:LTSlinux-gkeop

Fixed in:

5.15.0-1001.2

Ubuntu:24.04:LTSlinux-gkeop

Fixed in:

6.8.0-1001.3

Ubuntu:20.04:LTSlinux-gkeop

Affected versions:

5.4.0-1008.95.4.0-1009.10

Fixed in:

5.4.0-1010.11

Ubuntu:20.04:LTSlinux-gkeop-5.15

Fixed in:

5.15.0-1003.5~20.04.2

Ubuntu:18.04:LTSlinux-gkeop-5.4

Affected versions:

5.4.0-1001.15.4.0-1003.35.4.0-1004.55.4.0-1005.65.4.0-1007.8~18.04.15.4.0-1008.9~18.04.15.4.0-1009.10~18.04.1

Fixed in:

5.4.0-1010.11~18.04.1

Ubuntu:Pro:18.04:LTSlinux-hwe

Affected versions:

4.18.0-13.14~18.04.14.18.0-14.15~18.04.14.18.0-15.16~18.04.14.18.0-16.17~18.04.14.18.0-17.18~18.04.14.18.0-18.19~18.04.14.18.0-20.21~18.04.14.18.0-21.22~18.04.14.18.0-22.23~18.04.14.18.0-24.25~18.04.1+33 more

Ubuntu:16.04:LTSlinux-hwe

Affected versions:

4.10.0-27.30~16.04.24.10.0-28.32~16.04.24.10.0-30.34~16.04.14.10.0-32.36~16.04.14.10.0-33.37~16.04.14.10.0-35.39~16.04.14.10.0-37.41~16.04.14.10.0-38.42~16.04.14.10.0-40.44~16.04.14.10.0-42.46~16.04.1+74 more

Fixed in:

4.15.0-136.140~16.04.1

Ubuntu:20.04:LTSlinux-hwe-5.11

Fixed in:

5.11.0-22.23~20.04.1

Ubuntu:20.04:LTSlinux-hwe-5.13

Fixed in:

5.13.0-21.21~20.04.1

Ubuntu:20.04:LTSlinux-hwe-5.15

Fixed in:

5.15.0-33.34~20.04.1

Ubuntu:18.04:LTSlinux-hwe-5.4

Affected versions:

5.4.0-37.41~18.04.15.4.0-39.43~18.04.15.4.0-40.44~18.04.15.4.0-42.46~18.04.15.4.0-45.49~18.04.25.4.0-47.51~18.04.15.4.0-48.52~18.04.15.4.0-51.56~18.04.15.4.0-52.57~18.04.15.4.0-53.59~18.04.1+8 more

Fixed in:

5.4.0-66.74~18.04.2

Ubuntu:20.04:LTSlinux-hwe-5.8

Affected versions:

5.8.0-23.24~20.04.15.8.0-25.26~20.04.15.8.0-28.30~20.04.15.8.0-29.31~20.04.15.8.0-31.33~20.04.15.8.0-33.36~20.04.15.8.0-34.37~20.04.25.8.0-36.40~20.04.15.8.0-38.43~20.04.15.8.0-40.45~20.04.1+2 more

Fixed in:

5.8.0-44.50~20.04.1

Ubuntu:24.04:LTSlinux-hwe-6.11

Affected versions:

6.11.0-17.17~24.04.2

Fixed in:

6.11.0-19.19~24.04.1

Ubuntu:22.04:LTSlinux-hwe-6.5

Fixed in:

6.5.0-14.14~22.04.1

Ubuntu:22.04:LTSlinux-hwe-6.8

Fixed in:

6.8.0-38.38~22.04.1

Ubuntu:Pro:16.04:LTSlinux-hwe-edge

Affected versions:

4.10.0-14.16~16.04.14.10.0-19.21~16.04.14.10.0-20.22~16.04.14.10.0-21.23~16.04.14.10.0-22.24~16.04.14.10.0-24.28~16.04.14.10.0-26.30~16.04.14.11.0-13.19~16.04.14.11.0-14.20~16.04.14.13.0-16.19~16.04.3+13 more

Ubuntu:Pro:18.04:LTSlinux-hwe-edge

Affected versions:

5.0.0-15.16~18.04.15.0.0-16.17~18.04.15.0.0-17.18~18.04.15.0.0-19.20~18.04.15.0.0-20.21~18.04.15.3.0-19.20~18.04.25.3.0-22.24~18.04.15.3.0-23.25~18.04.15.3.0-23.25~18.04.25.3.0-24.26~18.04.2

Ubuntu:24.04:LTSlinux-ibm

Fixed in:

6.5.0-1009.9

Ubuntu:22.04:LTSlinux-ibm

Fixed in:

5.15.0-1002.2

Ubuntu:20.04:LTSlinux-ibm

Affected versions:

5.4.0-1003.4

Fixed in:

5.4.0-1004.5

Ubuntu:20.04:LTSlinux-ibm-5.15

Affected versions:

5.15.0-1033.36~20.04.1

Fixed in:

5.15.0-1034.37~20.04.1

Ubuntu:18.04:LTSlinux-ibm-5.4

Fixed in:

5.4.0-1010.11~18.04.2

Ubuntu:22.04:LTSlinux-ibm-6.8

Fixed in:

6.8.0-1008.8~22.04.1

Ubuntu:20.04:LTSlinux-intel-5.13

Fixed in:

5.13.0-1007.7

Ubuntu:Pro:22.04:LTS:Realtime:Kernellinux-intel-iot-realtime

Fixed in:

5.15.0-1021.26

Ubuntu:22.04:LTSlinux-intel-iot-realtime

Affected versions:

5.15.0-1073.75

Ubuntu:22.04:LTS:Realtime:Kernellinux-intel-iot-realtime

Ubuntu:22.04:LTSlinux-intel-iotg

Fixed in:

5.15.0-1004.6

Ubuntu:20.04:LTSlinux-intel-iotg-5.15

Fixed in:

5.15.0-1003.5~20.04.1

Ubuntu:20.04:LTSlinux-iot

Fixed in:

5.4.0-1001.3

Ubuntu:20.04:LTSlinux-kvm

Affected versions:

5.3.0-1003.35.3.0-1008.95.3.0-1009.105.4.0-1004.45.4.0-1006.65.4.0-1007.75.4.0-1008.85.4.0-1009.95.4.0-1011.115.4.0-1015.15+10 more

Fixed in:

5.4.0-1033.34

Ubuntu:22.04:LTSlinux-kvm

Fixed in:

5.13.0-1004.4

Ubuntu:16.04:LTSlinux-kvm

Affected versions:

4.4.0-1004.9

Fixed in:

4.4.0-1007.12

Ubuntu:18.04:LTSlinux-kvm

Affected versions:

4.15.0-1002.24.15.0-1003.34.15.0-1004.44.15.0-1006.64.15.0-1008.84.15.0-1010.104.15.0-1011.114.15.0-1012.124.15.0-1016.164.15.0-1017.17+42 more

Fixed in:

4.15.0-1085.87

Ubuntu:24.04:LTSlinux-lowlatency

Fixed in:

6.5.0-9.9.1

Ubuntu:22.04:LTSlinux-lowlatency

Fixed in:

5.15.0-22.22

Ubuntu:20.04:LTSlinux-lowlatency-hwe-5.15

Fixed in:

5.15.0-33.34~20.04.1

Ubuntu:24.04:LTSlinux-lowlatency-hwe-6.11

Affected versions:

6.11.0-1009.10~24.04.1

Fixed in:

6.11.0-1011.12~24.04.1

Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5

Fixed in:

6.5.0-14.14.1~22.04.1

Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.8

Fixed in:

6.8.0-38.38.1~22.04.2

Ubuntu:14.04:LTSlinux-lts-xenial

Fixed in:

4.4.0-13.29~14.04.1

Ubuntu:22.04:LTSlinux-nvidia

Fixed in:

5.15.0-1005.5

Ubuntu:24.04:LTSlinux-nvidia

Fixed in:

6.8.0-1007.7

Ubuntu:22.04:LTSlinux-nvidia-6.2

Fixed in:

6.2.0-1003.3~22.04.1

Ubuntu:22.04:LTSlinux-nvidia-6.5

Fixed in:

6.5.0-1004.4

Ubuntu:22.04:LTSlinux-nvidia-6.8

Fixed in:

6.8.0-1008.8~22.04.1

Ubuntu:24.04:LTSlinux-nvidia-lowlatency

Fixed in:

6.8.0-1009.9.1

Ubuntu:24.04:LTSlinux-nvidia-tegra

Fixed in:

6.8.0-1003.3

Ubuntu:22.04:LTSlinux-nvidia-tegra

Affected versions:

5.15.0-1009.95.15.0-1010.105.15.0-1012.12

Fixed in:

5.15.0-1013.13

Ubuntu:20.04:LTSlinux-nvidia-tegra-5.15

Fixed in:

5.15.0-1009.9~20.04.1

Ubuntu:22.04:LTSlinux-nvidia-tegra-igx

Fixed in:

5.15.0-1001.1

Ubuntu:Pro:18.04:LTSlinux-oem

Affected versions:

4.15.0-1002.34.15.0-1004.54.15.0-1006.94.15.0-1008.114.15.0-1009.124.15.0-1012.154.15.0-1013.164.15.0-1015.184.15.0-1017.204.15.0-1018.21+40 more

Ubuntu:20.04:LTSlinux-oem-5.10

Fixed in:

5.10.0-1008.9

Ubuntu:20.04:LTSlinux-oem-5.13

Fixed in:

5.13.0-1009.10

Ubuntu:20.04:LTSlinux-oem-5.14

Fixed in:

5.14.0-1004.4

Ubuntu:22.04:LTSlinux-oem-5.17

Fixed in:

5.17.0-1003.3

Ubuntu:20.04:LTSlinux-oem-5.6

Affected versions:

5.6.0-1007.75.6.0-1008.85.6.0-1010.105.6.0-1011.115.6.0-1013.135.6.0-1017.175.6.0-1018.185.6.0-1020.205.6.0-1021.215.6.0-1023.23+15 more

Fixed in:

5.6.0-1053.57

Ubuntu:22.04:LTSlinux-oem-6.0

Fixed in:

6.0.0-1006.6

Ubuntu:24.04:LTSlinux-oem-6.11

Fixed in:

6.11.0-1007.7

Ubuntu:24.04:LTSlinux-oem-6.14

Affected versions:

6.14.0-1004.4

Fixed in:

6.14.0-1005.5

Ubuntu:22.04:LTSlinux-oem-6.5

Fixed in:

6.5.0-1003.3

Ubuntu:24.04:LTSlinux-oem-6.8

Fixed in:

6.8.0-1003.3

Ubuntu:16.04:LTSlinux-oracle

Affected versions:

4.15.0-1007.9~16.04.14.15.0-1008.10~16.04.14.15.0-1009.11~16.04.14.15.0-1010.12~16.04.14.15.0-1011.13~16.04.14.15.0-1013.15~16.04.14.15.0-1014.16~16.04.14.15.0-1015.17~16.04.14.15.0-1017.19~16.04.24.15.0-1018.20~16.04.1+26 more

Fixed in:

4.15.0-1065.73~16.04.1

Ubuntu:24.04:LTSlinux-oracle

Fixed in:

6.5.0-1010.10

Ubuntu:22.04:LTSlinux-oracle

Fixed in:

5.13.0-1008.10

Ubuntu:18.04:LTSlinux-oracle

Affected versions:

4.15.0-1007.94.15.0-1008.104.15.0-1009.114.15.0-1010.124.15.0-1011.134.15.0-1013.154.15.0-1014.164.15.0-1015.174.15.0-1017.194.15.0-1018.20+28 more

Fixed in:

4.15.0-1065.73

Ubuntu:25.04linux-oracle

Fixed in:

6.11.0-1006.6

Ubuntu:20.04:LTSlinux-oracle

Affected versions:

5.3.0-1002.25.3.0-1007.85.3.0-1008.95.4.0-1005.55.4.0-1007.75.4.0-1008.85.4.0-1009.95.4.0-1011.115.4.0-1015.155.4.0-1018.18+12 more

Fixed in:

5.4.0-1038.41

Ubuntu:Pro:18.04:LTSlinux-oracle-5.0

Affected versions:

5.0.0-1007.12~18.04.15.0.0-1008.13~18.04.15.0.0-1009.14~18.04.15.0.0-1010.15~18.04.15.0.0-1011.165.0.0-1013.185.0.0-1014.19

Ubuntu:20.04:LTSlinux-oracle-5.11

Fixed in:

5.11.0-1008.8~20.04.1

Ubuntu:20.04:LTSlinux-oracle-5.13

Fixed in:

5.13.0-1011.13~20.04.2

Ubuntu:20.04:LTSlinux-oracle-5.15

Fixed in:

5.15.0-1007.9~20.04.1

Ubuntu:Pro:18.04:LTSlinux-oracle-5.3

Affected versions:

5.3.0-1011.12~18.04.15.3.0-1013.14~18.04.15.3.0-1014.15~18.04.15.3.0-1016.18~18.04.15.3.0-1018.20~18.04.15.3.0-1024.26~18.04.15.3.0-1027.29~18.04.15.3.0-1028.30~18.04.15.3.0-1030.32~18.04.1

Ubuntu:18.04:LTSlinux-oracle-5.4

Affected versions:

5.4.0-1019.19~18.04.15.4.0-1021.21~18.04.15.4.0-1022.22~18.04.15.4.0-1024.24~18.04.15.4.0-1025.25~18.04.15.4.0-1028.29~18.04.15.4.0-1029.31~18.04.15.4.0-1030.32~18.04.15.4.0-1033.355.4.0-1034.36~18.04.1+2 more

Fixed in:

5.4.0-1038.41~18.04.1

Ubuntu:20.04:LTSlinux-oracle-5.8

Fixed in:

5.8.0-1031.32~20.04.2

Ubuntu:22.04:LTSlinux-oracle-6.5

Fixed in:

6.5.0-1013.13~22.04.4

Ubuntu:22.04:LTSlinux-oracle-6.8

Fixed in:

6.8.0-1006.6~22.04.3

Ubuntu:20.04:LTSlinux-raspi

Affected versions:

5.4.0-1007.75.4.0-1008.85.4.0-1011.115.4.0-1012.125.4.0-1013.135.4.0-1015.155.4.0-1016.175.4.0-1018.205.4.0-1019.215.4.0-1021.24+5 more

Fixed in:

5.4.0-1029.32

Ubuntu:22.04:LTSlinux-raspi

Fixed in:

5.13.0-1008.9

Ubuntu:24.04:LTSlinux-raspi

Fixed in:

6.5.0-1005.7

Ubuntu:25.04linux-raspi

Fixed in:

6.11.0-1004.4

Ubuntu:18.04:LTSlinux-raspi-5.4

Affected versions:

5.4.0-1013.13~18.04.15.4.0-1015.15~18.04.15.4.0-1016.17~18.04.15.4.0-1018.20~18.04.15.4.0-1019.21~18.04.15.4.0-1021.24~18.04.15.4.0-1022.25~18.04.15.4.0-1023.26~18.04.15.4.0-1025.28~18.04.15.4.0-1026.29~18.04.1+1 more

Fixed in:

5.4.0-1029.32~18.04.1

Ubuntu:Pro:24.04:LTS:Realtime:Kernellinux-raspi-realtime

Fixed in:

6.7.0-2001.1

Ubuntu:24.04:LTS:Realtime:Kernellinux-raspi-realtime

Ubuntu:24.04:LTSlinux-raspi-realtime

Affected versions:

6.8.0-2019.20

Ubuntu:Pro:20.04:LTSlinux-raspi2

Affected versions:

5.3.0-1007.85.3.0-1014.165.3.0-1015.175.3.0-1017.195.4.0-1004.45.4.0-1006.6

Ubuntu:18.04:LTSlinux-raspi2

Affected versions:

4.13.0-1005.54.13.0-1006.64.13.0-1008.84.15.0-1006.74.15.0-1009.104.15.0-1010.114.15.0-1011.124.15.0-1012.134.15.0-1013.144.15.0-1017.18+45 more

Fixed in:

4.15.0-1079.84

Ubuntu:16.04:LTSlinux-raspi2

Fixed in:

4.2.0-1013.19

Ubuntu:24.04:LTSlinux-realtime

Fixed in:

6.8.1-1015.16

Ubuntu:25.04linux-realtime

Fixed in:

6.11.0-1001.1

Ubuntu:Pro:24.04:LTS:Realtime:Kernellinux-realtime

Fixed in:

6.8.0-1008.19

Ubuntu:22.04:LTSlinux-realtime

Affected versions:

5.15.0-1032.35

Ubuntu:Pro:22.04:LTS:Realtime:Kernellinux-realtime

Fixed in:

5.15.0-1006.6

Ubuntu:25.04linux-riscv

Fixed in:

6.11.0-8.8.1

Ubuntu:Pro:20.04:LTSlinux-riscv

Affected versions:

5.4.0-24.285.4.0-26.305.4.0-27.315.4.0-28.325.4.0-30.345.4.0-31.355.4.0-33.375.4.0-34.385.4.0-36.415.4.0-37.42+2 more

Ubuntu:22.04:LTSlinux-riscv

Fixed in:

5.13.0-1004.4

Ubuntu:24.04:LTSlinux-riscv

Fixed in:

6.5.0-9.9.1

Ubuntu:20.04:LTSlinux-riscv-5.11

Fixed in:

5.11.0-1015.16~20.04.1

Ubuntu:20.04:LTSlinux-riscv-5.15

Fixed in:

5.15.0-1015.17~20.04.1

Ubuntu:20.04:LTSlinux-riscv-5.8

Affected versions:

5.8.0-14.16~20.04.15.8.0-14.16~20.04.35.8.0-16.18~20.04.1

Fixed in:

5.8.0-17.19~20.04.1

Ubuntu:24.04:LTSlinux-riscv-6.14

Fixed in:

6.14.0-22.22.1~24.04.1

Ubuntu:22.04:LTSlinux-riscv-6.5

Fixed in:

6.5.0-17.17.1.1~22.04.1

Ubuntu:22.04:LTSlinux-riscv-6.8

Fixed in:

6.8.0-38.38.1~22.04.1

Ubuntu:18.04:LTSlinux-snapdragon

Affected versions:

4.15.0-1053.574.15.0-1054.584.15.0-1055.594.15.0-1057.624.15.0-1058.644.15.0-1060.664.15.0-1062.694.15.0-1064.714.15.0-1065.724.15.0-1066.73+25 more

Fixed in:

4.15.0-1096.105

Ubuntu:16.04:LTSlinux-snapdragon

Affected versions:

4.4.0-1012.124.4.0-1013.14

Fixed in:

4.4.0-1013.15

Ubuntu:22.04:LTSlinux-starfive-6.5

Fixed in:

6.5.0-1007.8~22.04.1

Ubuntu:22.04:LTSlinux-xilinx-zynqmp

Fixed in:

5.15.0-1022.26

Ubuntu:20.04:LTSlinux-xilinx-zynqmp

Fixed in:

5.4.0-1020.24

References

REPORThttps://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f0992098cadb4c9c6a00703b66cafe604e178fea REPORThttps://ubuntu.com/security/CVE-2020-27830 ADVISORYhttps://ubuntu.com/security/notices/USN-4749-1 ADVISORYhttps://ubuntu.com/security/notices/USN-4750-1 ADVISORYhttps://ubuntu.com/security/notices/USN-4751-1 ADVISORYhttps://ubuntu.com/security/notices/USN-4912-1 REPORThttps://www.cve.org/CVERecord?id=CVE-2020-27830 REPORThttps://www.openwall.com/lists/oss-security/2020/12/07/1

CVSS Analysis

CVSS v3.1

5.5

Exploitability

Attack Vector

LocalAV:L

Attack Complexity

LowAC:L

Privileges Required

LowPR:L

User Interaction

NoneUI:N

Scope

Scope

UnchangedS:U

Impact

Confidentiality

NoneC:N

Integrity

NoneI:N

Availability

HighA:H

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Upstream

Related

USN-4749-1 USN-4750-1 USN-4751-1 USN-4912-1

Timeline

PublishedDec 7, 2020

ModifiedJul 15, 2025

UBUNTU-CVE-2020-27830 | Mondoo Vulnerability Intelligence