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CVE-2023-53403

20
FAUCET Score

CVE-2023-53403 is a memory leak vulnerability in the Linux kernel, specifically within the time/debug component, caused by a missing dput() call after debugfs_lookup(). This medium-severity flaw (CVSS 5.5) allows a local attacker to cause a denial of service (A:H) with low attack complexity (AC:L) and no user interaction (UI:N). There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
< 5.15.99CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 5.16, < 6.1.16CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 6.2, < 6.2.3CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

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
0.14%
Probability of exploitation in next 30 days
EPSS Percentile
3.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0014 is in the 22nd 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-2023-53403

kernel: time/debug: Fix memory leak with using debugfs_lookup()

Sep 18, 2025

References

git.kernel.org / stable/c/15cffd01ed80e3506e29ba9f441e2358413b7317
Patch
git.kernel.org / stable/c/5b268d8abaec6cbd4bd70d062e769098d96670aa
Patch
git.kernel.org / stable/c/b588b42d077ce93c98704b41003bcec6a564b738
Patch
git.kernel.org / stable/c/dc39fbd865a9819db4b622f610ba17b2ebc294f4
Patch