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NVD / CVE Program· CNA Linux

CVE-2025-38174: thunderbolt: Do not double dequeue a configuration request

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: 0.23% (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 0771bcbe2f6e5d5f263cf466efe571d2754a46da, 0a3011d47dbc92a33621861c423cb64833d7fe57, 0f73628e9da1ee39daf5f188190cdbaee5e0c98c; azl3 kernel 6.6.92.2-2 on Azure Linux 3.0 6.6.96.1-1.
  • Severity is disputed: the assigning authority (CNA) scores it 8.8, NVD 5.5.

Low priority for now. Upgrade to Linux Linux 0771bcbe2f6e5d5f263cf466efe571d2754a46da, 0a3011d47dbc92a33621861c423cb64833d7fe57, 0f73628e9da1ee39daf5f188190cdbaee5e0c98c; azl3 kernel 6.6.92.2-2 on Azure Linux 3.0 6.6.96.1-1 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: thunderbolt: Do not double dequeue a configuration request Some of our devices crash in tb_cfg_request_dequeue(): general protection fault, probably for non-canonical address 0xdead000000000122 CPU: 6 PID: 91007 Comm: kworker/6:2 Tainted: G U W 6.6.65 RIP: 0010:tb_cfg_request_dequeue+0x2d/0xa0 Call Trace: <TASK> ? tb_cfg_request_dequeue+0x2d/0xa0 tb_cfg_request_work+0x33/0x80 worker_thread+0x386/0x8f0 kthread+0xed/0x110 ret_from_fork+0x38/0x50 ret_from_fork_asm+0x1b/0x30 The circumstances are unclear, however, the theory is that tb_cfg_request_work() can be scheduled twice for a request: first time via frame.callback from ring_work() and second time from tb_cfg_request(). Both times kworkers will execute tb_cfg_request_dequeue(), which results in double list_del() from the ctl->request_queue (the list poison deference hints at it: 0xdead000000000122). Do not dequeue requests that don't have TB_CFG_REQUEST_ACTIVE bit set.

MediumCVSS 5.5 · v3.1—No exploit Fix available
Published
Jul 4, 2025
Updated
Aug 5, 2026
EPSS
0.2% · 15th percentile
CWE
—

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%

CNA vs NVD score

NVD
5.5
CNA · Linux
8.8
3.3 point gap

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

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

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

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When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
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  • 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 5.10.239
  • linux linux kernel5.11 and later · before 5.15.186
  • linux linux kernel5.16 and later · before 6.1.142
  • linux linux kernel3.17 and later · before 5.4.295
  • linux linux kernel6.7 and later · before 6.12.33
  • linux linux kernel6.13 and later · before 6.14.11
  • linux linux kernel6.15 and later · before 6.15.2
  • linux linux kernel6.2 and later · before 6.6.94

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

    • 3.17affected
    • 16603153666d22df544ae9f9b3764fd18da28eeb and later · before e49e994cd83705f7ca30eda1e304abddfd96a37aaffected · git
    • 16603153666d22df544ae9f9b3764fd18da28eeb and later · before 0a3011d47dbc92a33621861c423cb64833d7fe57affected · git
    • 16603153666d22df544ae9f9b3764fd18da28eeb and later · before 2f62eda4d974c26bc595425eafd429067541f2c9affected · git
    • 16603153666d22df544ae9f9b3764fd18da28eeb and later · before 85286e634ebbaf9c0fb1cdf580add2f33fc7628caffected · git
    • 16603153666d22df544ae9f9b3764fd18da28eeb and later · before 5a057f261539720165d03d85024da2b52e67f63daffected · git
    • 16603153666d22df544ae9f9b3764fd18da28eeb and later · before eb2d5e794fb966b3ef8bde99eb8561446a53509faffected · git
    • 16603153666d22df544ae9f9b3764fd18da28eeb and later · before 0771bcbe2f6e5d5f263cf466efe571d2754a46daaffected · git
    • 16603153666d22df544ae9f9b3764fd18da28eeb and later · before cdb4feab2f39e75a66239e3a112beced279612a8affected · git
    • 16603153666d22df544ae9f9b3764fd18da28eeb and later · before 0f73628e9da1ee39daf5f188190cdbaee5e0c98caffected · git

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.147-16.1.147-1
Debian:13linuxbefore 6.12.33-16.12.33-1

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-2025-38169Jul 3, 2025 · arm64/fpsimd: Avoid clobbering kernel FPSIMD state with SMSTOP
    22Monitor
  • ← EarlierCVE-2025-38170Jul 3, 2025 · arm64/fpsimd: Discard stale CPU state when handling SME traps
    22Monitor
  • Later →CVE-2025-38175Jul 4, 2025 · binder: fix yet another UAF in binder_devices
    31Monitor

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 Linux0771bcbe2f6e5d5f263cf466efe571d2754a46daVendor (CNA)
Linux Linux0a3011d47dbc92a33621861c423cb64833d7fe57Vendor (CNA)
Linux Linux0f73628e9da1ee39daf5f188190cdbaee5e0c98cVendor (CNA)
Linux Linux2f62eda4d974c26bc595425eafd429067541f2c9Vendor (CNA)
Linux Linux5a057f261539720165d03d85024da2b52e67f63dVendor (CNA)
Linux Linux85286e634ebbaf9c0fb1cdf580add2f33fc7628cVendor (CNA)
Linux Linuxcdb4feab2f39e75a66239e3a112beced279612a8Vendor (CNA)
Linux Linuxe49e994cd83705f7ca30eda1e304abddfd96a37aVendor (CNA)
Linux Linuxeb2d5e794fb966b3ef8bde99eb8561446a53509fVendor (CNA)
azl3 kernel 6.6.92.2-2 on Azure Linux 3.06.6.96.1-1 · CBL-Mariner ReleasesMicrosoft (MSRC)
debian:linux6.1.147-1 · 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)

—

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