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CVE-2023-53687· NVD / CVE Program· CNA Linux

tty: serial: samsung_tty: Fix a memory leak in s3c24xx_serial_getclk() when iterating clk

Noroxi assessment

Priority: Monitor (action score 22/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.14% (FIRST EPSS).
  • Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: Linux Linux 01dd8a43a84616c830782166ba3cceb01ad95363, 1962717c4649e026a4252fe6625175affd28a593, 1f426293fef1c13742b2a685bf7e363f51f6ee03.

Low priority for now. Upgrade to Linux Linux 01dd8a43a84616c830782166ba3cceb01ad95363, 1962717c4649e026a4252fe6625175affd28a593, 1f426293fef1c13742b2a685bf7e363f51f6ee03 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

In the Linux kernel, the following vulnerability has been resolved: tty: serial: samsung_tty: Fix a memory leak in s3c24xx_serial_getclk() when iterating clk When the best clk is searched, we iterate over all possible clk. If we find a better match, the previous one, if any, needs to be freed. If a better match has already been found, we still need to free the new one, otherwise it leaks.

MediumCVSS 5.5 · v3.1—No exploit Fix available
Published
Oct 7, 2025
Updated
Jun 17, 2026
EPSS
0.1% · 3th percentile

Report tools

JSON

Action score

22

Monitor

Low priority for now.

CVSS
22 / 40 · 5.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.1%

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

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When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
linuxlinux kernel

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • linux linux kernel3.3 and later · before 4.14.322
  • linux linux kernel4.15 and later · before 4.19.291
  • linux linux kernel4.20 and later · before 5.4.251
  • linux linux kernel5.5 and later · before 5.10.188
  • linux linux kernel5.11 and later · before 5.15.121
  • linux linux kernel5.16 and later · before 6.1.40
  • linux linux kernel6.2 and later · before 6.4.5

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

  • Linux Linux

    • 3.3affected
    • 5f5a7a5578c5885201cf9c85856f023fe8b81765 and later · before 933e5b2998bc3a527d15efbf1e97c9e63297aa3caffected · git
    • 5f5a7a5578c5885201cf9c85856f023fe8b81765 and later · before 01dd8a43a84616c830782166ba3cceb01ad95363affected · git
    • 5f5a7a5578c5885201cf9c85856f023fe8b81765 and later · before 46574e5a0a2aee41e6ebb979cfe1dbaea8693e16affected · git
    • 5f5a7a5578c5885201cf9c85856f023fe8b81765 and later · before 1962717c4649e026a4252fe6625175affd28a593affected · git
    • 5f5a7a5578c5885201cf9c85856f023fe8b81765 and later · before 9dd8091959bc41fee51d0827276a2b982e84adf0affected · git
    • 5f5a7a5578c5885201cf9c85856f023fe8b81765 and later · before f0bf102ef9b05d7294bd8d506755465f6867d944affected · git
    • 5f5a7a5578c5885201cf9c85856f023fe8b81765 and later · before 1f426293fef1c13742b2a685bf7e363f51f6ee03affected · git
    • 5f5a7a5578c5885201cf9c85856f023fe8b81765 and later · before 832e231cff476102e8204a9e7bddfe5c6154a375affected · git
    • before 3.3not affected · semver

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.52-16.1.52-1
Debian:13linuxbefore 6.4.11-16.4.11-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2022-0847A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe KEV
    89Now
  • CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV
    85Now
  • CVE-2016-5195Race condition in mm/gup.c in the Linux kernel 2.x through 4.x before 4.8.3 allows local users to gain privileges by leveraging incorrect haKEV
    83Now

Published before and after this one in the same product

  • ← EarlierCVE-2023-53685Oct 7, 2025 · tun: Fix memory leak for detached NAPI queue.
    22Monitor
  • ← EarlierCVE-2023-53686Oct 7, 2025 · net/handshake: fix null-ptr-deref in handshake_nl_done_doit()
    22Monitor
  • Later →CVE-2022-50528Oct 7, 2025 · drm/amdkfd: Fix memory leakage
    22Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Linux Linux01dd8a43a84616c830782166ba3cceb01ad95363Vendor (CNA)
Linux Linux1962717c4649e026a4252fe6625175affd28a593Vendor (CNA)
Linux Linux1f426293fef1c13742b2a685bf7e363f51f6ee03Vendor (CNA)
Linux Linux46574e5a0a2aee41e6ebb979cfe1dbaea8693e16Vendor (CNA)
Linux Linux832e231cff476102e8204a9e7bddfe5c6154a375Vendor (CNA)
Linux Linux933e5b2998bc3a527d15efbf1e97c9e63297aa3cVendor (CNA)
Linux Linux9dd8091959bc41fee51d0827276a2b982e84adf0Vendor (CNA)
Linux Linuxf0bf102ef9b05d7294bd8d506755465f6867d944Vendor (CNA)
debian:linux6.1.52-1 · Debian:12Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
none
Availability
high · the service can be disrupted
Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
None
Availability impact
High

Weakness class (CWE)

CWE-401 · Missing Release of Memory after Effective Lifetime

CVSS vector

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

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (7 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records