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CVE-2018-1095

Published: Apr 2, 2018

Modified: Aug 5, 2024

PUBLISHED

Description

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.

Vendor	Product	Versions
n/a	Linux kernel through version 4.15	affected `Linux kernel through version 4.15`

References

https://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git/commit/?id=ce3fd194fcc6fbdc00ce095a852f22df97baa401

x_refsource_MISC

http://openwall.com/lists/oss-security/2018/03/29/1

x_refsource_MISC

vendor-advisory

x_refsource_UBUNTU

vendor-advisory

x_refsource_UBUNTU

vendor-advisory

x_refsource_REDHAT

https://bugzilla.kernel.org/show_bug.cgi?id=199185

x_refsource_MISC

https://bugzilla.redhat.com/show_bug.cgi?id=1560793

x_refsource_MISC

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