CVE-2018-1093

Name	CVE-2018-1093
Description	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.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
References	DLA-1392-1, DLA-1422-1, DSA-4188-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
linux (PTS)	bullseye	5.10.223-1	fixed
	bullseye (security)	5.10.226-1	fixed
	bookworm	6.1.123-1	fixed
	bookworm (security)	6.1.119-1	fixed
	trixie	6.12.9-1	fixed
	sid	6.12.10-1	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Origin
linux	source	wheezy	3.2.102-1	DLA-1392-1
linux	source	jessie	3.16.57-1	DLA-1422-1
linux	source	stretch	4.9.88-1	DSA-4188-1
linux	source	(unstable)	4.15.17-1

https://bugzilla.kernel.org/show_bug.cgi?id=199181