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CVE-2017-15537

20
FAUCET Score

CVE-2017-15537 is a Linux kernel vulnerability affecting versions before 4.13.5 in the x86/fpu subsystem. It allows a local attacker to read the Floating Point Unit (FPU) registers of other processes due to improper handling of reserved bits in the xstate header. This vulnerability has a CVSS score of 5.5 (Medium), indicating a low attack complexity and requiring local access, with a high impact on confidentiality. 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
<= 4.13.4CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

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
0.40%
Probability of exploitation in next 30 days
EPSS Percentile
32.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0040 is in the 87th percentile among its peer group of 15,938 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 (1)

github_advisorypatch availablevia nvd_reference
View patch

Vendor Advisories (1)

redhatCVE-2017-15537Moderate

kernel: Information leak of x86 FPU registers

Oct 17, 2017

References

git.kernel.org / cgit/linux/kernel/git/torvalds/linux.git/commit
Issue TrackingPatchThird Party Advisory
github.com / torvalds/linux/commit/814fb7bb7db5433757d76f4c4502c96fc53b0b5e
Issue TrackingPatchThird Party Advisory
source.android.com / security/bulletin/pixel/2018-01-01
kernel.org / pub/linux/kernel/v4.x/ChangeLog-4.13.5
Release NotesVendor Advisory