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CVE-2018-1093 PUBLISHED

The ext4_valid_block_bitmap function in fs/ext4/balloc.c in the Linux kernel through 4.15.15 allows attackers to cause a denial of service (out-of-bounds read and system crash) via a crafted ext4 image because balloc.c and ialloc.c do not validate bitmap block numbers.

EPSS 0.10% · 27.7th percentile

Risk Scores

EPSS Score
0.10%
27.7th percentile

Affected Products

VendorProductVersions
Ubuntu:16.04:LTSlinux-azure4.15.0-1013.13~16.04.2, 4.13.0-1018.21, 4.13.0-1016.19
Ubuntu:Pro:20.04:LTSlinux-azure-fde-5.155.15.0-1020.25~20.04.1.1, 5.15.0-1021.26~20.04.1.1, 5.15.0-1029.36~20.04.1.1
Ubuntu:16.04:LTSlinux-hwe4.10.0-37.41~16.04.1, 4.15.0-32.35~16.04.1, 4.15.0-30.32~16.04.1
Ubuntu:20.04:LTSlinux-gke5.4.0-1104.111, 5.4.0-1056.59, 5.4.0-1055.58
Ubuntu:24.04:LTSlinux-azure-6.116.11.0-1018.18~24.04.1, 6.11.0-1017.17~24.04.1, 6.11.0-1015.15~24.04.1
Ubuntu:18.04:LTSlinux4.15.0-30.32, 0, 4.13.0-16.19
Ubuntu:20.04:LTSlinux-riscv5.4.0-24.28, 5.4.0-34.38, 5.4.0-26.30
Ubuntu:18.04:LTSlinux-gcp4.15.0-1010.10, 0, 4.15.0-1001.1
Ubuntu:16.04:LTSlinux-kvm4.4.0-1009.14, 4.4.0-1026.31, 4.4.0-1023.28
Ubuntu:18.04:LTSlinux-raspi24.15.0-1020.22, 4.15.0-1018.19, 4.15.0-1017.18
Ubuntu:16.04:LTSlinux-gcp4.13.0-1015.19, 4.10.0-1006.6, 4.10.0-1007.7
Ubuntu:14.04:LTSlinux-aws4.4.0-1009.9, 4.4.0-1019.19, 4.4.0-1006.6
Ubuntu:24.04:LTSlinux-raspi-realtime6.8.0-2019.20, 0
Ubuntu:16.04:LTSlinux4.4.0-83.106, 4.2.0-16.19, 4.2.0-17.21
Ubuntu:18.04:LTSlinux-aws4.15.0-1003.3, 4.15.0-1001.1, 4.15.0-1006.6
Ubuntu:18.04:LTSlinux-kvm4.15.0-1006.6, 4.15.0-1019.19, 4.15.0-1017.17
Ubuntu:16.04:LTSlinux-raspi24.4.0-1042.49, 4.4.0-1044.51, 4.4.0-1046.53
Ubuntu:16.04:LTSlinux-snapdragon4.4.0-1046.50, 4.4.0-1048.52, 4.4.0-1092.97
Ubuntu:24.04:LTSlinux-lowlatency-hwe-6.110, 6.11.0-1009.10~24.04.1, 6.11.0-1016.17~24.04.1
Ubuntu:18.04:LTSlinux-azure4.15.0-1012.12, 4.15.0-1002.2, 4.15.0-1003.3

…and 12 more

Timeline

References

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