NVD / CVE Program· CNA Linux

CVE-2025-21715: net: davicom: fix UAF in dm9000_drv_remove

Noroxi assessment

Priority: Monitor (action score 31/100)

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: 0.24% (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 19e65c45a1507a1a2926649d2db3583ed9d55fd9, 2013c95df6752d9c88221d0f0f37b6f197969390, 4.10; cbl2 kernel 5.15.176.3-3 on CBL Mariner 2.0 5.15.180.1-1.

Low priority for now. Upgrade to Linux Linux 19e65c45a1507a1a2926649d2db3583ed9d55fd9, 2013c95df6752d9c88221d0f0f37b6f197969390, 4.10; cbl2 kernel 5.15.176.3-3 on CBL Mariner 2.0 5.15.180.1-1 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: net: davicom: fix UAF in dm9000_drv_remove dm is netdev private data and it cannot be used after free_netdev() call. Using dm after free_netdev() can cause UAF bug. Fix it by moving free_netdev() at the end of the function. This is similar to the issue fixed in commit ad297cd2db89 ("net: qcom/emac: fix UAF in emac_remove"). This bug is detected by our static analysis tool.

HighCVSS 7.8 · v3.1—No exploit Fix available

Memory safety

BDU:2025-03897

Published: Feb 26, 2025
Updated: Jun 17, 2026
EPSS: 0.2% · 15th percentile
CWE: CWE-416

Report tools

JSON

Action score

Monitor

Low priority for now.

CVSS: 31 / 40 · 7.8 / 10
CISA KEV: 0 / 30 · Not listed
EPSS: 0 / 30 · 0.2%

CISA SSVC decision

Exploitation: none
Automatable: no
Technical impact: total

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.

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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.

Vendor	Product	CPE
linux	linux kernel	cpe:2.3:o:linux:linux_kernel

Affected versions

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

linux linux kernel4.4.262 and later · before 4.5
linux linux kernel4.9.262 and later · before 4.10
linux linux kernel4.14.226 and later · before 4.15
linux linux kernel4.19.181 and later · before 4.20
linux linux kernel5.4.106 and later · before 5.4.291
linux linux kernel5.10.24 and later · before 5.10.235
linux linux kernel5.11.7 and later · before 5.15.179
linux linux kernel5.16 and later · before 6.1.129
linux linux kernel6.2 and later · before 6.6.76
linux linux kernel6.7 and later · before 6.12.13
linux linux kernel6.13 and later · before 6.13.2

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
- d182994b2b6e23778b146a230efac8f1d77a3445, 427b3fc3d5244fef9c1f910a9c699f2690642f83, 9c49181c201d434186ca6b1a7b52e29f4169f6f8, 9808f032c4d971cbf2b01411a0a2a8ee0040efe3, a1f308089257616cdb91b4334c5eaa81ae17e387, 5.12affected
- d28e783c20033b90a64d4e1307bafb56085d8184 and later · before db79e982c5f9e39ab710cbce55b05f2f5e6f1ca9affected · git
- 4fd0654b8f2129b68203974ddee15f804ec011c2 and later · before a53cb72043443ac787ec0b5fa17bb3f8ff3d462baffected · git
- cf9e60aa69ae6c40d3e3e4c94dd6c8de31674e9b and later · before 7d7d201eb3b766abe590ac0dda7a508b7db3e357affected · git
- cf9e60aa69ae6c40d3e3e4c94dd6c8de31674e9b and later · before c94ab07edc2843e2f3d46dbd82e5c681503aaadfaffected · git
- cf9e60aa69ae6c40d3e3e4c94dd6c8de31674e9b and later · before c411f9a5fdc9158e8f7c57eac961d3df3eb4d8caaffected · git
- cf9e60aa69ae6c40d3e3e4c94dd6c8de31674e9b and later · before 5a54367a7c2378c65aaa4d3cfd952f26adef7aa7affected · git
- cf9e60aa69ae6c40d3e3e4c94dd6c8de31674e9b and later · before 2013c95df6752d9c88221d0f0f37b6f197969390affected · git
- cf9e60aa69ae6c40d3e3e4c94dd6c8de31674e9b and later · before 19e65c45a1507a1a2926649d2db3583ed9d55fd9affected · git
- 5.4.106 and later · before 5.4.291affected · semver

Package-level exposure

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

Ecosystem	Package	Affected range	Fix
Debian:12	linux	before 6.1.129-1	6.1.129-1
Debian:13	linux	before 6.12.13-1	6.12.13-1

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
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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-2025-21711Feb 26, 2025 · net/rose: prevent integer overflows in rose_setsockopt()
22Monitor
← EarlierCVE-2025-21713Feb 26, 2025 · powerpc/pseries/iommu: Don't unset window if it was never set
22Monitor
Later →CVE-2025-21717Feb 26, 2025 · net/mlx5e: add missing cpu_to_node to kvzalloc_node in mlx5e_open_xdpredirect_sq
28Monitor

Remediation

Which version to upgrade to

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

Product / package	Fixed version	Source
Linux Linux	19e65c45a1507a1a2926649d2db3583ed9d55fd9	Vendor (CNA)
Linux Linux	2013c95df6752d9c88221d0f0f37b6f197969390	Vendor (CNA)
Linux Linux	4.10	Vendor (CNA)
Linux Linux	4.15	Vendor (CNA)
Linux Linux	4.20	Vendor (CNA)
Linux Linux	4.5	Vendor (CNA)
Linux Linux	5.10.235	Vendor (CNA)
Linux Linux	5.12	Vendor (CNA)
Linux Linux	5.4.291	Vendor (CNA)
Linux Linux	5a54367a7c2378c65aaa4d3cfd952f26adef7aa7	Vendor (CNA)
Linux Linux	7d7d201eb3b766abe590ac0dda7a508b7db3e357	Vendor (CNA)
Linux Linux	a53cb72043443ac787ec0b5fa17bb3f8ff3d462b	Vendor (CNA)
Linux Linux	c411f9a5fdc9158e8f7c57eac961d3df3eb4d8ca	Vendor (CNA)
Linux Linux	c94ab07edc2843e2f3d46dbd82e5c681503aaadf	Vendor (CNA)
Linux Linux	db79e982c5f9e39ab710cbce55b05f2f5e6f1ca9	Vendor (CNA)
cbl2 kernel 5.15.176.3-3 on CBL Mariner 2.0	5.15.180.1-1 · CBL-Mariner Releases	Microsoft (MSRC)
debian:linux	6.1.129-1 · Debian:12	Package 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: high · data can be read
Integrity: high · data or configuration can be modified
Availability: high · the service can be disrupted

Attack vector: Local
Attack complexity: Low
Privileges required: Low
User interaction: None
Scope: Unchanged
Confidentiality impact: High
Integrity impact: High
Availability impact: High

Weakness class (CWE)

CWE-416 · Use After Free

CVSS vector

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

nvd-secondary

Root cause

After a memory region is freed, another reference pointing to it is still used. By then, the same region may have been allocated for different data.

The bug in code

The whole CWE-416 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

1free(dev->buf);
2/* ... another thread is still running ... */
3process(dev->buf);

Fixed

1lock(&dev->lock);
2free(dev->buf);
3dev->buf = NULL;
4unlock(&dev->lock);

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

Fix✗ → ✓Sep 28, 2026, 10:08 PM UTC

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

References

git.kernel.org/stable/c/19e65c45a1507a1a2926649d2db3583ed9d55fd9

Show all references (9 more)

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

All records