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CVE-2018-1095 PUBLISHED

The ext4_xattr_check_entries function in fs/ext4/xattr.c in the Linux kernel through 4.15.15 does not properly validate xattr sizes, which causes misinterpretation of a size as an error code, and consequently allows attackers to cause a denial of service (get_acl NULL pointer dereference and system crash) via a crafted ext4 image.

EPSS 0.15% · 35.8th percentile

Risk Scores

EPSS Score
0.15%
35.8th percentile

Affected Products

VendorProductVersions
Ubuntu:16.04:LTSlinux-gcp4.10.0-1004.4, 0, 4.10.0-1008.8
Ubuntu:16.04:LTSlinux-azure4.13.0-1018.21, 4.11.0-1009.9, 4.11.0-1011.11
Ubuntu:18.04:LTSlinux-azure4.15.0-1002.2, 0, 4.15.0-1012.12
Ubuntu:18.04:LTSlinux-oem4.15.0-1002.3, 4.15.0-1004.5, 0
Ubuntu:18.04:LTSlinux-aws4.15.0-1007.7, 4.15.0-1010.10, 0
Ubuntu:16.04:LTSlinux-hwe4.10.0-27.30~16.04.2, 0, 4.8.0-36.36~16.04.1
Ubuntu:18.04:LTSlinux-gcp4.15.0-1001.1, 4.15.0-1003.3, 4.15.0-1005.5
Ubuntu:18.04:LTSlinux-raspi20, 4.15.0-1011.12, 4.15.0-1012.13
Ubuntu:18.04:LTSlinux-kvm4.15.0-1004.4, 0, 4.15.0-1002.2
Ubuntu:18.04:LTSlinux4.13.0-25.29, 4.13.0-17.20, 4.13.0-16.19

Timeline

References

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