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CVE-2018-11506

25
FAUCET Score

CVE-2018-11506 is a stack-based buffer overflow vulnerability in the Linux kernel's sr_do_ioctl function, affecting various Canonical and Debian Linux distributions up to kernel version 4.16.12. This flaw allows a local attacker to cause a denial of service or potentially achieve other unspecified impacts due to differing sense buffer sizes between CDROM and SCSI layers. It carries a high CVSS score of 7.8, indicating a low-complexity local attack with high impact on confidentiality, integrity, and availability. Despite its severity, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
>= 4.11, < 4.14.45CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 4.15, < 4.16.13CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
16.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
18.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
8.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.8HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.39%
Probability of exploitation in next 30 days
EPSS Percentile
31.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0039 is in the 70th percentile among its peer group of 17,070 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

github_advisorypatch availablevia nvd_reference
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: kernel-alt-0:4.14.0-115.el7a
View patch

Vendor Advisories (1)

redhatCVE-2018-11506Moderate

kernel: Stack-based buffer overflow in drivers/scsi/sr_ioctl.c allows denial of service or other unspecified impact

May 21, 2018

References

git.kernel.org / cgit/linux/kernel/git/torvalds/linux.git/commit
Patch
access.redhat.com / errata/RHSA-2018:2948
Third Party Advisory
github.com / torvalds/linux/commit/f7068114d45ec55996b9040e98111afa56e010fe
Patch
lists.debian.org / debian-lts-announce/2018/07/msg00015.html
Mailing ListThird Party Advisory
lists.debian.org / debian-lts-announce/2018/07/msg00016.html
Mailing ListThird Party Advisory
lists.debian.org / debian-lts-announce/2018/07/msg00020.html
Mailing ListThird Party Advisory
twitter.com / efrmv/status/1001574894273007616
Third Party Advisory
usn.ubuntu.com / 3752-1
Third Party Advisory
usn.ubuntu.com / 3752-2
Third Party Advisory
usn.ubuntu.com / 3752-3
Third Party Advisory