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CVE-2018-20449

19
FAUCET Score

CVE-2018-20449 is a local information disclosure vulnerability affecting the Linux kernel (versions 4.14.90 and potentially others) and related products like NetApp Element Software Management Node. A local attacker can read debugfs files to obtain sensitive kernel address information from the hidma_chan_stats function. This vulnerability has a CVSS score of 5.5 (Medium), indicating low attack complexity and no integrity or availability impact, but high confidentiality impact. There is no known active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
4.14.90CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:4.14.90:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:a:netapp:element_software_management_node:-:*:*:*:*:*:*:*

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
0.42%
Probability of exploitation in next 30 days
EPSS Percentile
34.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0042 is in the 89th percentile among its peer group of 15,937 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

Vendor Advisories (1)

redhatCVE-2018-20449Low

kernel: reading "callback=" lines in a debugfs file in drivers/dma/qcom/hidma_dbg.c results in information disclosure

Jan 22, 2019

References

elixir.bootlin.com / linux/v4.14.90/source/drivers/dma/qcom/hidma_dbg.c
PatchThird Party Advisory
security.netapp.com / advisory/ntap-20190502-0002
Third Party Advisory
mail-archive.com / debian-security-tracker%40lists.debian.org/msg03808.html