7.1 High
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
AV:N/AC:M/Au:N/C:N/I:N/A:C
5.5 Medium
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
0.002 Low
EPSS
Percentile
61.4%
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.
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
ubuntu | 18.04 | noarch | linux | < 4.15.0-33.36 | UNKNOWN |
ubuntu | 14.04 | noarch | linux | < 3.13.0-157.207 | UNKNOWN |
ubuntu | 16.04 | noarch | linux | < 4.4.0-128.154 | UNKNOWN |
ubuntu | 18.04 | noarch | linux-aws | < 4.15.0-1020.20 | UNKNOWN |
ubuntu | 14.04 | noarch | linux-aws | < 4.4.0-1023.23 | UNKNOWN |
ubuntu | 16.04 | noarch | linux-aws | < 4.4.0-1061.70 | UNKNOWN |
ubuntu | 18.04 | noarch | linux-azure | < 4.15.0-1022.23 | UNKNOWN |
ubuntu | 16.04 | noarch | linux-azure | < 4.15.0-1022.22~16.04.1 | UNKNOWN |
ubuntu | 16.04 | noarch | linux-azure-edge | < 4.15.0-1022.23 | UNKNOWN |
ubuntu | 18.04 | noarch | linux-gcp | < 4.15.0-1018.19 | UNKNOWN |
bugzilla.kernel.org/show_bug.cgi?id=199181
launchpad.net/bugs/cve/CVE-2018-1093
nvd.nist.gov/vuln/detail/CVE-2018-1093
security-tracker.debian.org/tracker/CVE-2018-1093
ubuntu.com/security/notices/USN-3676-1
ubuntu.com/security/notices/USN-3676-2
ubuntu.com/security/notices/USN-3752-1
ubuntu.com/security/notices/USN-3752-2
ubuntu.com/security/notices/USN-3752-3
ubuntu.com/security/notices/USN-3754-1
www.cve.org/CVERecord?id=CVE-2018-1093
7.1 High
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
AV:N/AC:M/Au:N/C:N/I:N/A:C
5.5 Medium
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
0.002 Low
EPSS
Percentile
61.4%