VDB

CVE-2019-20422

CVE-2019-20422 PUBLISHED CVSS 5.5 MEDIUM

In the Linux kernel before 5.3.4, fib6_rule_lookup in net/ipv6/ip6_fib.c mishandles the RT6_LOOKUP_F_DST_NOREF flag in a reference-count decision, leading to (for example) a crash that was identified by syzkaller, aka CID-7b09c2d052db.

EPSS 0.43% · 36.3th percentile

Risk Scores

CVSS 3.1
5.5
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS Score
0.43%
36.3th percentile

Affected Products

VendorProductVersions
Ubuntu:22.04:LTSlinux-riscv5.13.0-1007.7+22.04.1, 5.15.0-1004.4, 5.15.0-1005.5
Ubuntu:24.04:LTSlinux-raspi-realtime0, 6.8.0-2019.20
Ubuntu:16.04:LTSlinux-hwe-edge4.8.0-34.36~16.04.1, *, 4.15.0-23.25~16.04.1
Ubuntu:20.04:LTSlinux-gke5.4.0-1095.102, 5.4.0-1033.35, 5.4.0-1035.37
Ubuntu:18.04:LTSlinux-gcp-edge*, 4.18.0-1012.13~18.04.1, *
Ubuntu:22.04:LTSlinux-realtime5.15.0-1032.35, 0
Ubuntu:20.04:LTSlinux-azure-fde5.4.0-1090.95+cvm1.1, 5.4.0-1091.96+cvm1.1, *
Ubuntu:18.04:LTSlinux-azure-edge4.18.0-1006.6~18.04.1, 0, *
Ubuntu:18.04:LTSlinux-hwe-edge5.0.0-17.18~18.04.1, 5.0.0-15.16~18.04.1, 5.0.0-16.17~18.04.1
Ubuntu:20.04:LTSlinux-raspi25.3.0-1007.8, 0, 5.3.0-1014.16
Ubuntu:22.04:LTSlinux-intel-iot-realtime5.15.0-1073.75, 0
Ubuntu:20.04:LTSlinux-riscv5.4.0-31.35, 5.4.0-30.34, 5.4.0-24.28

Timeline

  • Jan 27, 2020 CVE Published
  • Apr 14, 2021 EPSS Score
  • Jun 23, 2021 EPSS Score
  • Aug 24, 2021 EPSS Score
  • Oct 26, 2021 EPSS Score
  • Jan 6, 2022 EPSS Score
  • Feb 4, 2022 EPSS Score
  • Mar 1, 2022 EPSS Score
  • Apr 1, 2022 EPSS Score
  • May 2, 2022 EPSS Score
  • Jul 4, 2022 EPSS Score
  • Sep 6, 2022 EPSS Score

References

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