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NVD / CVE Program· CNA Linux

CVE-2025-38630: fbdev: imxfb: Check fb_add_videomode to prevent null-ptr-deref

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: 0.17% (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 40f0a51f6c54d46a94b9f1180339ede7ca7ee190, 49377bac9e3bec1635065a033c9679214fe7593e, 4b5d36cc3014986e6fac12eaa8433fe56801d4ce; 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 40f0a51f6c54d46a94b9f1180339ede7ca7ee190, 49377bac9e3bec1635065a033c9679214fe7593e, 4b5d36cc3014986e6fac12eaa8433fe56801d4ce; 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: fbdev: imxfb: Check fb_add_videomode to prevent null-ptr-deref fb_add_videomode() can fail with -ENOMEM when its internal kmalloc() cannot allocate a struct fb_modelist. If that happens, the modelist stays empty but the driver continues to register. Add a check for its return value to prevent poteintial null-ptr-deref, which is similar to the commit 17186f1f90d3 ("fbdev: Fix do_register_framebuffer to prevent null-ptr-deref in fb_videomode_to_var").

MediumCVSS 5.5 · v3.1—No exploit Fix available
Published
Aug 22, 2025
Updated
Jun 17, 2026
EPSS
0.1% · 6th 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 kernel3.11 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

    • 3.11affected
    • 1b6c79361ba5ce30b40f0f7d6fc2421dc5fcbe0c and later · before 69373502c2b5d364842c702c941d1171e4f35a7caffected · git
    • 1b6c79361ba5ce30b40f0f7d6fc2421dc5fcbe0c and later · before f00c29e6755ead56baf2a9c1d3c4c0bb40af3612affected · git
    • 1b6c79361ba5ce30b40f0f7d6fc2421dc5fcbe0c and later · before cca8f5a3991916729b39d797d01499c335137319affected · git
    • 1b6c79361ba5ce30b40f0f7d6fc2421dc5fcbe0c and later · before ac16154cccda8be10ee3ae188f10a06f3890bc5daffected · git
    • 1b6c79361ba5ce30b40f0f7d6fc2421dc5fcbe0c and later · before 4b5d36cc3014986e6fac12eaa8433fe56801d4ceaffected · git
    • 1b6c79361ba5ce30b40f0f7d6fc2421dc5fcbe0c and later · before 40f0a51f6c54d46a94b9f1180339ede7ca7ee190affected · git
    • 1b6c79361ba5ce30b40f0f7d6fc2421dc5fcbe0c and later · before 49377bac9e3bec1635065a033c9679214fe7593eaffected · git
    • 1b6c79361ba5ce30b40f0f7d6fc2421dc5fcbe0c and later · before f060441c153495750804133555cf0a211a856892affected · git
    • 1b6c79361ba5ce30b40f0f7d6fc2421dc5fcbe0c and later · before da11e6a30e0bb8e911288bdc443b3dc8f6a7cac7affected · 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-2025-38627Aug 22, 2025 · f2fs: compress: fix UAF of f2fs_inode_info in f2fs_free_dic
    31Monitor
  • ← EarlierCVE-2025-38628Aug 22, 2025 · vdpa/mlx5: Fix release of uninitialized resources on error path
    22Monitor
  • Later →CVE-2025-38631Aug 22, 2025 · clk: imx95-blk-ctl: Fix synchronous abort
    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 Linux40f0a51f6c54d46a94b9f1180339ede7ca7ee190Vendor (CNA)
Linux Linux49377bac9e3bec1635065a033c9679214fe7593eVendor (CNA)
Linux Linux4b5d36cc3014986e6fac12eaa8433fe56801d4ceVendor (CNA)
Linux Linux69373502c2b5d364842c702c941d1171e4f35a7cVendor (CNA)
Linux Linuxac16154cccda8be10ee3ae188f10a06f3890bc5dVendor (CNA)
Linux Linuxcca8f5a3991916729b39d797d01499c335137319Vendor (CNA)
Linux Linuxda11e6a30e0bb8e911288bdc443b3dc8f6a7cac7Vendor (CNA)
Linux Linuxf00c29e6755ead56baf2a9c1d3c4c0bb40af3612Vendor (CNA)
Linux Linuxf060441c153495750804133555cf0a211a856892Vendor (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 (9 more)

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

All records