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NVD / CVE Program· CNA Linux

CVE-2025-38635: clk: davinci: Add NULL check in davinci_lpsc_clk_register()

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: 0.18% (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 105e8115944a9f93e9412abe7bb07ed96725adf9, 13de464f445d42738fe18c9a28bab056ba3a290a, 1d92608a29251278015f57f3572bc950db7519f0; azl3 kernel 6.6.96.2-2 on Azure Linux 3.0 6.6.104.2-1; cbl2 kernel 5.15.186.1-1 on CBL Mariner 2.0 5.15.200.1-1.

Low priority for now. Upgrade to Linux Linux 105e8115944a9f93e9412abe7bb07ed96725adf9, 13de464f445d42738fe18c9a28bab056ba3a290a, 1d92608a29251278015f57f3572bc950db7519f0; azl3 kernel 6.6.96.2-2 on Azure Linux 3.0 6.6.104.2-1; cbl2 kernel 5.15.186.1-1 on CBL Mariner 2.0 5.15.200.1-1 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: clk: davinci: Add NULL check in davinci_lpsc_clk_register() devm_kasprintf() returns NULL when memory allocation fails. Currently, davinci_lpsc_clk_register() does not check for this case, which results in a NULL pointer dereference. Add NULL check after devm_kasprintf() to prevent this issue and ensuring no resources are left allocated.

MediumCVSS 5.5 · v3.1—No exploit Fix available
Published
Aug 22, 2025
Updated
Jun 17, 2026
EPSS
0.1% · 7th 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
debiandebian linux

Affected versions

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

  • debian debian linux11.0
  • linux linux kernel5.5 and later · before 5.10.241
  • linux linux kernel5.11 and later · before 5.15.190
  • linux linux kernel5.16 and later · before 6.1.148
  • linux linux kernel4.17 and later · before 5.4.297
  • linux linux kernel6.7 and later · before 6.12.42
  • linux linux kernel6.13 and later · before 6.15.10
  • linux linux kernel6.16 and later · before 6.16.1
  • linux linux kernel6.2 and later · before 6.6.102

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

    • 4.17affected
    • c6ed4d734bc7f731709dab0ffd69eed499dd5277 and later · before 77e9ad7a2d0e2a771c9e0be04b9d1639413b5f13affected · git
    • c6ed4d734bc7f731709dab0ffd69eed499dd5277 and later · before 7843412e5927dafbb844782c56b6380564064109affected · git
    • c6ed4d734bc7f731709dab0ffd69eed499dd5277 and later · before 2adc945b70c4d97e9491a6c0c9f3b217a9eecfbaaffected · git
    • c6ed4d734bc7f731709dab0ffd69eed499dd5277 and later · before 105e8115944a9f93e9412abe7bb07ed96725adf9affected · git
    • c6ed4d734bc7f731709dab0ffd69eed499dd5277 and later · before 1d92608a29251278015f57f3572bc950db7519f0affected · git
    • c6ed4d734bc7f731709dab0ffd69eed499dd5277 and later · before 7943ed1f05f5cb7372dca2aa227f848747a98791affected · git
    • c6ed4d734bc7f731709dab0ffd69eed499dd5277 and later · before 6fb19cdcf040e1dec052a9032acb66cc2ad1d43faffected · git
    • c6ed4d734bc7f731709dab0ffd69eed499dd5277 and later · before 23f564326deaafacfd7adf6104755b15216d8320affected · git
    • c6ed4d734bc7f731709dab0ffd69eed499dd5277 and later · before 13de464f445d42738fe18c9a28bab056ba3a290aaffected · git

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.148-16.1.148-1
Debian:13linuxbefore 6.12.43-16.12.43-1
Debian:14linuxbefore 6.16.3-16.16.3-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-31431crypto: algif_aead - Revert to operating out-of-placeKEV
    90Now
  • 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

Published before and after this one in the same product

  • ← EarlierCVE-2025-38633Aug 22, 2025 · clk: spacemit: mark K1 pll1_d8 as critical
    22Monitor
  • ← EarlierCVE-2025-38634Aug 22, 2025 · power: supply: cpcap-charger: Fix null check for power_supply_get_by_name
    22Monitor
  • Later →CVE-2025-38638Aug 22, 2025 · ipv6: add a retry logic in net6_rt_notify()
    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 Linux105e8115944a9f93e9412abe7bb07ed96725adf9Vendor (CNA)
Linux Linux13de464f445d42738fe18c9a28bab056ba3a290aVendor (CNA)
Linux Linux1d92608a29251278015f57f3572bc950db7519f0Vendor (CNA)
Linux Linux23f564326deaafacfd7adf6104755b15216d8320Vendor (CNA)
Linux Linux2adc945b70c4d97e9491a6c0c9f3b217a9eecfbaVendor (CNA)
Linux Linux6fb19cdcf040e1dec052a9032acb66cc2ad1d43fVendor (CNA)
Linux Linux77e9ad7a2d0e2a771c9e0be04b9d1639413b5f13Vendor (CNA)
Linux Linux7843412e5927dafbb844782c56b6380564064109Vendor (CNA)
Linux Linux7943ed1f05f5cb7372dca2aa227f848747a98791Vendor (CNA)
azl3 kernel 6.6.96.2-2 on Azure Linux 3.06.6.104.2-1 · CBL-Mariner ReleasesMicrosoft (MSRC)
cbl2 kernel 5.15.186.1-1 on CBL Mariner 2.05.15.200.1-1 · CBL-Mariner ReleasesMicrosoft (MSRC)
debian:linux6.1.148-1 · 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.

No history yet (it accumulates with the daily EPSS job).

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-476 · NULL Pointer Dereference

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 (10 more)

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

All records