01 Record

CVE-2023-53403

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

MediumPUBLISHEDCNA: Linux

CNA base score5.5 CVSS v3.xCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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02 Description

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

03 Exploitation and scoring

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.14% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 3.4% of scored records. A rank, not a probability.

NVD base score

5.5 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

NVD analysis status

Modified. NVD last modified this record on 2026-06-17.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published

2025-09-18 13:58Z1 YR AGO

Last updated

2026-05-11 19:44Z5 MO AGO

Reserved

2025-09-17

Assigning CNA

Linux

Record state

PUBLISHED

Severity

Medium (CVSS 5.5)

CNA CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weaknesses

CWE-401Missing Release of Memory after Effective LifetimeVariant

Data version

5.2

Document digest

54a7040b081a56e4df1cef39de08d1cd444fb2624ccc32606456fd7cb068d8c2

05 Affected products

VendorProductVersionsPlatforms

LinuxLinux44511ab344c755d1f216bf421e92fbc2777e87fe to < dc39fbd865a9819db4b622f610ba17b2ebc294f4, 44511ab344c755d1f216bf421e92fbc2777e87fe to < 15cffd01ed80e3506e29ba9f441e2358413b7317, 44511ab344c755d1f216bf421e92fbc2777e87fe to < b588b42d077ce93c98704b41003bcec6a564b738, 44511ab344c755d1f216bf421e92fbc2777e87fe to < 5b268d8abaec6cbd4bd70d062e769098d96670aa, 5.13—

06 References

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

07 Fixed in

Debian 12

linux
Fixed in 6.1.20-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 13

linux
Fixed in 6.1.20-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 14

linux
Fixed in 6.1.20-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.