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CVE-2019-18805 PUBLISHED

An issue was discovered in net/ipv4/sysctl_net_ipv4.c in the Linux kernel before 5.0.11. There is a net/ipv4/tcp_input.c signed integer overflow in tcp_ack_update_rtt() when userspace writes a very large integer to /proc/sys/net/ipv4/tcp_min_rtt_wlen, leading to a denial of service or possibly unspecified other impact, aka CID-19fad20d15a6.

EPSS 0.57% · 68.4th percentile

Risk Scores

EPSS Score
0.57%
68.4th percentile

Affected Products

VendorProductVersions
Ubuntu:16.04:LTSlinux-gcp4.15.0-1026.27~16.04.1, 4.15.0-1024.25~16.04.2, 4.15.0-1023.24~16.04.1
Ubuntu:20.04:LTSlinux-azure-fde5.4.0-1086.91+cvm1.1, 5.4.0-1074.77+cvm1.1, 5.4.0-1076.79+cvm1.1
Ubuntu:Pro:FIPS-updates:18.04:LTSlinux-azure-fips4.15.0-1002.2, 0
Ubuntu:18.04:LTSlinux4.15.0-33.36, 0, 4.13.0-16.19
Ubuntu:Pro:FIPS-updates:18.04:LTSlinux-aws-fips4.15.0-2000.4, 0
Ubuntu:18.04:LTSlinux-azure-edge5.0.0-1012.12~18.04.2, 4.18.0-1007.7~18.04.1, 4.18.0-1008.8~18.04.1
Ubuntu:18.04:LTSlinux-gcp4.15.0-1018.19, 4.15.0-1017.18, 4.15.0-1015.15
Ubuntu:18.04:LTSlinux-aws4.15.0-1032.34, 4.15.0-1003.3, 4.15.0-1005.5
Ubuntu:16.04:LTSlinux-snapdragon4.4.0-1050.54, 4.4.0-1022.25, 4.4.0-1020.23
Ubuntu:Pro:FIPS:16.04:LTSlinux-fips4.4.0-1013.17, 0, 4.4.0-1003.3
Ubuntu:16.04:LTSlinux-raspi24.4.0-1004.5, 4.4.0-1089.97, 4.4.0-1090.98
Ubuntu:22.04:LTSlinux-intel-iot-realtime5.15.0-1073.75, 0
Ubuntu:16.04:LTSlinux-aws4.4.0-1012.21, 4.4.0-1020.29, 4.4.0-1022.31
Ubuntu:18.04:LTSlinux-gke-4.154.15.0-1040.42, 0, 4.15.0-1030.32
Ubuntu:Pro:FIPS:18.04:LTSlinux-azure-fips0, 4.15.0-1002.2
Ubuntu:Pro:FIPS:18.04:LTSlinux-gcp-fips0, 4.15.0-1001.1
Ubuntu:Pro:14.04:LTSlinux-lts-xenial4.4.0-157.185~14.04.1, 0, 4.4.0-13.29~14.04.1
Ubuntu:Pro:FIPS:18.04:LTSlinux-aws-fips4.15.0-2000.4, 0
Ubuntu:18.04:LTSlinux-snapdragon4.4.0-1077.82, 4.4.0-1078.83, 4.4.0-1079.84
Ubuntu:18.04:LTSlinux-oracle4.15.0-1018.20, 4.15.0-1017.19, 4.15.0-1015.17

…and 21 more

Timeline

References

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