CVE-2021-3428 PUBLISHED

A flaw was found in the Linux kernel. A denial of service problem is identified if an extent tree is corrupted in a crafted ext4 filesystem in fs/ext4/extents.c in ext4_es_cache_extent. Fabricating an integer overflow, A local attacker with a special user privilege may cause a system crash problem which can lead to an availability threat.

EPSS 0.02% · 5.7th percentile

Risk Scores

EPSS Score
0.02%
5.7th percentile

Affected Products

VendorProductVersions
Ubuntu:Pro:FIPS:20.04:LTSlinux-gcp-fips0, 5.4.0-1021.21+fips1
Ubuntu:Pro:16.04:LTSlinux-hwe4.15.0-106.107~16.04.1, 4.15.0-101.102~16.04.1, 4.15.0-99.100~16.04.1
Ubuntu:20.04:LTSlinux-gcp5.4.0-1053.57, 5.4.0-1052.56, 5.4.0-1051.55
Ubuntu:Pro:16.04:LTSlinux-aws-hwe4.15.0-1051.53~16.04.1, 4.15.0-1102.109~16.04.1, 4.15.0-1099.106~16.04.1
Ubuntu:18.04:LTSlinux-gke-5.45.4.0-1054.57~18.04.1, 5.4.0-1053.56~18.04.1, 5.4.0-1052.55~18.04.1
Ubuntu:Pro:FIPS-updates:20.04:LTSlinux-fips5.4.0-1028.32, 0, 5.4.0-1035.41
Ubuntu:20.04:LTSlinux-azure5.4.0-1022.22, 5.4.0-1023.23, 5.4.0-1025.25
Ubuntu:18.04:LTSlinux-snapdragon4.15.0-1079.86, 0, 4.4.0-1077.82
Ubuntu:20.04:LTSlinux5.4.0-88.99, 5.3.0-24.26, 5.4.0-9.12
Ubuntu:18.04:LTSlinux-aws-5.45.4.0-1020.20~18.04.2, 5.4.0-1018.18~18.04.1, 0
Ubuntu:Pro:FIPS-updates:20.04:LTSlinux-aws-fips0, 5.4.0-1021.21+fips2
Ubuntu:18.04:LTSlinux-azure-edge4.18.0-1008.8~18.04.1, 4.18.0-1007.7~18.04.1, 0
Ubuntu:Pro:16.04:LTSlinux-azure4.13.0-1007.9, 4.15.0-1114.127~16.04.1, 4.15.0-1113.126~16.04.1
Ubuntu:22.04:LTSlinux-intel-iot-realtime5.15.0-1073.75, 0
Ubuntu:18.04:LTSlinux-azure-5.45.4.0-1025.25~18.04.1, 5.4.0-1026.26~18.04.1, 5.4.0-1031.32~18.04.1
Ubuntu:Pro:FIPS-updates:20.04:LTSlinux-azure-fips0, 5.4.0-1022.22+fips1
Ubuntu:Pro:14.04:LTSlinux-lts-xenial4.4.0-139.165~14.04.1, 4.4.0-83.106~14.04.1, 4.4.0-81.104~14.04.1
Ubuntu:18.04:LTSlinux-gcp4.15.0-1003.3, 4.15.0-1001.1, 0
Ubuntu:18.04:LTSlinux-kvm4.15.0-1002.2, 4.15.0-1091.93, 4.15.0-1090.92
Ubuntu:Pro:16.04:LTSlinux-aws4.4.0-1139.153, 4.4.0-1143.158, 4.4.0-1145.160

…and 53 more

Timeline

References

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