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CVE-2023-52895

17
FAUCET Score

CVE-2023-52895 is a vulnerability in the Linux kernel's io_uring subsystem, specifically affecting multishot poll requests. It addresses a flaw where reissuing an armed multishot request can lead to a buffer leak, though this is considered undefined behavior. The vulnerability has a CVSS score of 5.5 (Medium), indicating a local attack vector with low complexity, requiring low privileges, and resulting in high availability impact (denial of service) without affecting confidentiality or integrity. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 6.1.7, < 6.1.8CPE match
cpe:2.3:a:linux:linux_kernel:*:*:*:*:*:*:*:*
6.1.7CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:6.1.7:*:*:*:*:*:*:*

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:N/I:N/A:H

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.21%
Probability of exploitation in next 30 days
EPSS Percentile
10.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0021 is in the 50th 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

Vendor Advisories (1)

redhatCVE-2023-52895Moderate

kernel: io_uring/poll: don't reissue in case of poll race on multishot request

Aug 21, 2024

References

git.kernel.org / stable/c/36fc7317cdb16cfeae0f879916995037bb615ac4
Patch
git.kernel.org / stable/c/8caa03f10bf92cb8657408a6ece6a8a73f96ce13
Patch