UBUNTU-CVE-2018-1093
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.
02 / AFFECTED SOFTWARE
Affected packages
136 explicit affected versions
13 explicit affected versions
53 explicit affected versions
75 explicit affected versions
34 explicit affected versions
20 explicit affected versions
18 explicit affected versions
38 explicit affected versions
14 explicit affected versions
48 explicit affected versions
45 explicit affected versions
16 explicit affected versions
11 explicit affected versions
11 explicit affected versions
10 explicit affected versions
11 explicit affected versions
8 explicit affected versions
12 explicit affected versions
26 explicit affected versions
51 explicit affected versions
6 explicit affected versions
12 explicit affected versions
1 explicit affected versions
1 explicit affected versions
23 explicit affected versions
7 explicit affected versions
7 explicit affected versions
8 explicit affected versions
7 explicit affected versions
1 explicit affected versions
61 explicit affected versions
3 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
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.
05 / REFERENCES
Further evidence
- https://bugzilla.kernel.org/show_bug.cgi?id=199181
- https://ubuntu.com/security/CVE-2018-1093
- https://ubuntu.com/security/notices/USN-3676-1
- https://ubuntu.com/security/notices/USN-3676-2
- https://ubuntu.com/security/notices/USN-3752-1
- https://ubuntu.com/security/notices/USN-3752-2
- https://ubuntu.com/security/notices/USN-3752-3
- https://ubuntu.com/security/notices/USN-3754-1
- https://www.cve.org/CVERecord?id=CVE-2018-1093