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CVE-2018-7755

20
FAUCET Score

CVE-2018-7755 is a kernel pointer leak vulnerability in the Linux kernel's floppy driver, affecting versions through 4.15.7, including Canonical and Ubuntu distributions. An authenticated local attacker can use the FDGETPRM ioctl to obtain a kernel pointer, bypassing security protections like KASLR by revealing kernel code and data locations. Rated Medium (CVSS 5.5), this vulnerability requires local access and has a high confidentiality impact but no integrity or availability impact. There is no known active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 4.15.7CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
12.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:*
14.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
16.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
17.10CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:17.10:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

5.5MEDIUM

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
1.8
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.68%
Probability of exploitation in next 30 days
EPSS Percentile
48.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0068 is in the 95th percentile among its peer group of 15,940 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (3)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: kernel-rt-0:3.10.0-1062.rt56.1022.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: kernel-0:3.10.0-1062.el7
View patch
redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: kernel-alt

Vendor Advisories (1)

redhatCVE-2018-7755Low

kernel: Information exposure in fd_locked_ioctl function in drivers/block/floppy.c

Mar 8, 2018

References

access.redhat.com / errata/RHSA-2019:2029
access.redhat.com / errata/RHSA-2019:2043
lists.debian.org / debian-lts-announce/2018/10/msg00003.html
lkml.org / lkml/2018/3/7/1116
ExploitThird Party Advisory
usn.ubuntu.com / 3695-1
Third Party Advisory
usn.ubuntu.com / 3695-2
Third Party Advisory
usn.ubuntu.com / 3696-1
Third Party Advisory
usn.ubuntu.com / 3696-2
Third Party Advisory
usn.ubuntu.com / 3697-1
Third Party Advisory
usn.ubuntu.com / 3697-2
Third Party Advisory
usn.ubuntu.com / 3698-1
Third Party Advisory
usn.ubuntu.com / 3698-2
Third Party Advisory
debian.org / security/2018/dsa-4308