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CVE-2019-20812 PUBLISHED

An issue was discovered in the Linux kernel before 5.4.7. The prb_calc_retire_blk_tmo() function in net/packet/af_packet.c can result in a denial of service (CPU consumption and soft lockup) in a certain failure case involving TPACKET_V3, aka CID-b43d1f9f7067.

EPSS 0.07% · 21.0th percentile

Risk Scores

EPSS Score
0.07%
21.0th percentile

Affected Products

VendorProductVersions
Ubuntu:18.04:LTSlinux-aws4.15.0-1039.41, 4.15.0-1003.3, 4.15.0-1010.10
Ubuntu:16.04:LTSlinux-oracle4.15.0-1022.25~16.04.1, 4.15.0-1007.9~16.04.1, 4.15.0-1009.11~16.04.1
Ubuntu:18.04:LTSlinux-azure5.0.0-1020.21~18.04.1, 5.0.0-1018.19~18.04.1, 5.0.0-1016.17~18.04.1
Ubuntu:Pro:14.04:LTSlinux-lts-xenial*, 4.4.0-13.29~14.04.1, 4.4.0-14.30~14.04.2
Ubuntu:Pro:FIPS-updates:18.04:LTSlinux-azure-fips4.15.0-1002.2, 0
Ubuntu:18.04:LTSlinux-gke-5.00, 5.0.0-1011.11~18.04.1, 5.0.0-1013.13~18.04.1
Ubuntu:Pro:14.04:LTSlinux-azure4.15.0-1050.55~14.04.1, 4.15.0-1049.54~14.04.1, 4.15.0-1047.51~14.04.1
Ubuntu:16.04:LTSlinux-hwe4.8.0-41.44~16.04.1, *, *
Ubuntu:18.04:LTSlinux-oem4.15.0-1063.72, 4.15.0-1015.18, 4.15.0-1008.11
Ubuntu:Pro:FIPS:18.04:LTSlinux-gcp-fips4.15.0-1001.1, 0
Ubuntu:Pro:FIPS:16.04:LTSlinux-fips4.4.0-1012.16, 4.4.0-1026.31, 4.4.0-1023.28
Ubuntu:18.04:LTSlinux-kvm4.15.0-1008.8, 4.15.0-1010.10, 4.15.0-1011.11
Ubuntu:18.04:LTSlinux-gcp-edge4.18.0-1007.8~18.04.1, 0, 4.18.0-1004.5~18.04.1
Ubuntu:16.04:LTSlinux-snapdragon4.4.0-1051.55, 4.4.0-1106.111, 4.4.0-1105.110
Ubuntu:Pro:FIPS-updates:18.04:LTSlinux-aws-fips0, 4.15.0-2000.4
Ubuntu:16.04:LTSlinux-hwe-edge*, *, *
Ubuntu:18.04:LTSlinux-hwe-edge5.3.0-23.25~18.04.1, 0, 5.0.0-16.17~18.04.1
Ubuntu:Pro:FIPS:18.04:LTSlinux-azure-fips4.15.0-1002.2, 0
Ubuntu:18.04:LTSlinux-oracle4.15.0-1030.33, 4.15.0-1031.34, 4.15.0-1026.29
Ubuntu:18.04:LTSlinux-gcp4.15.0-1005.5, 4.15.0-1006.6, 4.15.0-1009.9

…and 30 more

Timeline

References

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