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NVD / CVE Program· CNA Linux

CVE-2025-37792: Bluetooth: btrtl: Prevent potential NULL dereference

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: 0.20% (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 2d7c60c2a38b4b461fa960ad0995136a6bfe0756, 324dddea321078a6eeb535c2bff5257be74c9799, 3db6605043b50c8bb768547b23e0222f67ceef3e; azl3 kernel 6.6.85.1-4 on Azure Linux 3.0 6.6.92.2-1; azl3 kernel 6.6.92.2-1 on Azure Linux 3.0 6.6.92.2-1.

Low priority for now. Upgrade to Linux Linux 2d7c60c2a38b4b461fa960ad0995136a6bfe0756, 324dddea321078a6eeb535c2bff5257be74c9799, 3db6605043b50c8bb768547b23e0222f67ceef3e; azl3 kernel 6.6.85.1-4 on Azure Linux 3.0 6.6.92.2-1; azl3 kernel 6.6.92.2-1 on Azure Linux 3.0 6.6.92.2-1 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: Bluetooth: btrtl: Prevent potential NULL dereference The btrtl_initialize() function checks that rtl_load_file() either had an error or it loaded a zero length file. However, if it loaded a zero length file then the error code is not set correctly. It results in an error pointer vs NULL bug, followed by a NULL pointer dereference. This was detected by Smatch: drivers/bluetooth/btrtl.c:592 btrtl_initialize() warn: passing zero to 'ERR_PTR'

MediumCVSS 5.5 · v3.1—No exploit Fix available
Published
May 1, 2025
Updated
Nov 5, 2026
EPSS
0.2% · 10th 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 · 0.2%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

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.

Follow CVE-2025-37792

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 5.10.237
  • linux linux kernel5.11 and later · before 5.15.181
  • linux linux kernel5.16 and later · before 6.1.135
  • linux linux kernel4.19 and later · before 5.4.293
  • linux linux kernel6.7 and later · before 6.12.25
  • linux linux kernel6.13 and later · before 6.14.4
  • linux linux kernel6.2 and later · before 6.6.88
  • linux linux kernel6.15

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

    • 4.19affected
    • 26503ad25de8c7c93a2037f919c2e49a62cf65f1 and later · before c3e9717276affe59fd8213706db021b493e81e34affected · git
    • 26503ad25de8c7c93a2037f919c2e49a62cf65f1 and later · before 73dc99c0ea94abd22379b2d82cacbc73f3e18ec1affected · git
    • 26503ad25de8c7c93a2037f919c2e49a62cf65f1 and later · before 2d7c60c2a38b4b461fa960ad0995136a6bfe0756affected · git
    • 26503ad25de8c7c93a2037f919c2e49a62cf65f1 and later · before d8441818690d795232331bd8358545c5c95b6b72affected · git
    • 26503ad25de8c7c93a2037f919c2e49a62cf65f1 and later · before 3db6605043b50c8bb768547b23e0222f67ceef3eaffected · git
    • 26503ad25de8c7c93a2037f919c2e49a62cf65f1 and later · before aaf356f872a60db1e96fb762a62c4607fd22741faffected · git
    • 26503ad25de8c7c93a2037f919c2e49a62cf65f1 and later · before 53ceef799dcfc22c734d600811bfc9dd32eaea0aaffected · git
    • 26503ad25de8c7c93a2037f919c2e49a62cf65f1 and later · before 324dddea321078a6eeb535c2bff5257be74c9799affected · git
    • before 4.19not affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.135-16.1.135-1
Debian:13linuxbefore 6.12.25-16.12.25-1

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-2025-37788May 1, 2025 · cxgb4: fix memory leak in cxgb4_init_ethtool_filters() error path
    22Monitor
  • ← EarlierCVE-2025-37791May 1, 2025 · ethtool: cmis_cdb: use correct rpl size in ethtool_cmis_module_poll()
    22Monitor
  • Later →CVE-2025-37793May 1, 2025 · ASoC: Intel: avs: Fix null-ptr-deref in avs_component_probe()
    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 Linux2d7c60c2a38b4b461fa960ad0995136a6bfe0756Vendor (CNA)
Linux Linux324dddea321078a6eeb535c2bff5257be74c9799Vendor (CNA)
Linux Linux3db6605043b50c8bb768547b23e0222f67ceef3eVendor (CNA)
Linux Linux53ceef799dcfc22c734d600811bfc9dd32eaea0aVendor (CNA)
Linux Linux73dc99c0ea94abd22379b2d82cacbc73f3e18ec1Vendor (CNA)
Linux Linuxaaf356f872a60db1e96fb762a62c4607fd22741fVendor (CNA)
Linux Linuxc3e9717276affe59fd8213706db021b493e81e34Vendor (CNA)
Linux Linuxd8441818690d795232331bd8358545c5c95b6b72Vendor (CNA)
azl3 kernel 6.6.85.1-4 on Azure Linux 3.06.6.92.2-1 · CBL-Mariner ReleasesMicrosoft (MSRC)
azl3 kernel 6.6.92.2-1 on Azure Linux 3.06.6.92.2-1 · CBL-Mariner ReleasesMicrosoft (MSRC)
debian:linux6.1.135-1 · 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. SSVC exploitation— → none
  2. Fix✗ → ✓

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

References

Show all references (9 more)

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

All records