CVE-2018-1092 PUBLISHED

The ext4_iget function in fs/ext4/inode.c in the Linux kernel through 4.15.15 mishandles the case of a root directory with a zero i_links_count, which allows attackers to cause a denial of service (ext4_process_freed_data NULL pointer dereference and OOPS) via a crafted ext4 image.

EPSS 0.24% · 46.7th percentile

Risk Scores

EPSS Score
0.24%
46.7th percentile

Affected Products

VendorProductVersions
Ubuntu:16.04:LTSlinux-azure4.13.0-1014.17, 4.13.0-1016.19, 4.13.0-1018.21
Ubuntu:16.04:LTSlinux-snapdragon4.4.0-1039.43, 4.4.0-1042.46, 4.4.0-1093.98
Ubuntu:20.04:LTSlinux-raspi25.4.0-1006.6, 5.4.0-1004.4, 5.3.0-1017.19
Ubuntu:24.04:LTSlinux-hwe-6.116.11.0-19.19~24.04.1, 6.11.0-17.17~24.04.2, 0
Ubuntu:16.04:LTSlinux-hwe4.8.0-58.63~16.04.1, 4.8.0-36.36~16.04.1, 4.8.0-39.42~16.04.1
Ubuntu:18.04:LTSlinux-azure4.15.0-1004.4, 4.15.0-1003.3, 4.15.0-1009.9
Ubuntu:20.04:LTSlinux-azure-fde5.4.0-1103.109+cvm1.1, 5.4.0-1063.66+cvm2.2, 5.4.0-1063.66+cvm3.2
Ubuntu:14.04:LTSlinux-lts-xenial4.4.0-47.68~14.04.1, 4.4.0-70.91~14.04.1, 4.4.0-71.92~14.04.1
Ubuntu:20.04:LTSlinux-riscv0, 5.4.0-24.28, 5.4.0-26.30
Ubuntu:16.04:LTSlinux-gcp4.13.0-1006.9, 4.13.0-1002.5, 4.10.0-1009.9
Ubuntu:24.04:LTSlinux-lowlatency-hwe-6.116.11.0-1012.13~24.04.1, 6.11.0-1016.17~24.04.1, 6.11.0-1015.16~24.04.2
Ubuntu:16.04:LTSlinux-oem4.13.0-1026.29, 4.13.0-1008.9, 4.13.0-1010.11
Ubuntu:16.04:LTSlinux4.4.0-66.87, 4.4.0-67.88, 4.4.0-70.91
Ubuntu:18.04:LTSlinux-kvm0, 4.15.0-1002.2, 4.15.0-1003.3
Ubuntu:22.04:LTSlinux-intel-iot-realtime5.15.0-1073.75, 0
Ubuntu:24.04:LTSlinux-azure-6.116.11.0-1018.18~24.04.1, 0, 6.11.0-1008.8~24.04.1
Ubuntu:14.04:LTSlinux-aws4.4.0-1011.11, 4.4.0-1012.12, 4.4.0-1014.14
Ubuntu:16.04:LTSlinux-raspi24.4.0-1071.79, 0, 4.2.0-1013.19
Ubuntu:20.04:LTSlinux-gke5.4.0-1097.104, 5.4.0-1062.65, 5.4.0-1063.66
Ubuntu:Pro:20.04:LTSlinux-azure-fde-5.155.15.0-1047.54~20.04.1.1, 5.15.0-1065.74~20.04.1.1, 5.15.0-1059.67~20.04.1.1

…and 13 more

Timeline

References

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