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CVE-2023-38575

20
FAUCET Score

CVE-2023-38575 is a medium-severity information disclosure vulnerability affecting some Intel processors, stemming from non-transparent sharing of return predictor targets between contexts. An authorized local user could exploit this with low attack complexity to potentially disclose sensitive information. While not actively exploited and lacking public exploit code, it has garnered some community discussion and media coverage, including a report of its impact on Linux systems.

Impacted Technologies

VendorProductVersion(s)CPE
N/AIntel(R) Processors
some Intel(R) ProcessorsCNA affecteddefault unaffected

CVSS Data

CVSS version used by this source: 3.1

5.5MEDIUM

CVSS:3.1/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
3.1

Exploit Intelligence

EPSS Score
0.27%
Probability of exploitation in next 30 days
EPSS Percentile
18.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0027 is in the 74th 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

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 (6)

denopatch availablevia llm_extracted
View patch
keraspatch availablevia llm_extracted
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: microcode_ctl-4:20230808-2.20240531.1.el9_4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: microcode_ctl-4:20240910-1.el9_5
View patch
redhatno patchvia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: microcode_ctl
redhatno patchvia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: microcode_ctl

Vendor Advisories (3)

denollm-deno-da698aabc15b5d7fHIGH

Intel 2024.1 IPU - BIOS March 2024 Security Updates

Mar 13, 2024
kerasllm-keras-c9027dcf3f6630dcHIGH

Intel 2024.1 IPU - BIOS March 2024 Security Updates

Mar 13, 2024
redhatCVE-2023-38575Moderate

kernel: Local information disclosure in some Intel(R) processors

Feb 14, 2024

References

lists.debian.org / debian-lts-announce/2024/05/msg00003.html
security.netapp.com / advisory/ntap-20240405-0008
intel.com / content/www/us/en/security-center/advisory/intel-sa-00982.html