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NVD / CVE Program· CNA Linux

CVE-2026-43104: drm/vc4: Fix a memory leak in hang state error path

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: 0.12% (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 259e2bba3fd7005c62cbd42365a48b3221b244e3, 3eb7dd55021d0f4308fbea0bea21d2118984d8e7, 9487daa18e627ac6b5ed5911be79f23362554b70.

Low priority for now. Upgrade to Linux Linux 259e2bba3fd7005c62cbd42365a48b3221b244e3, 3eb7dd55021d0f4308fbea0bea21d2118984d8e7, 9487daa18e627ac6b5ed5911be79f23362554b70 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: drm/vc4: Fix a memory leak in hang state error path When vc4_save_hang_state() encounters an early return condition, it returns without freeing the previously allocated `kernel_state`, leaking memory. Add the missing kfree() calls by consolidating the early return paths into a single place.

MediumCVSS 5.5 · v3.1—No exploit Fix available
Published
May 6, 2026
Updated
Nov 11, 2026
EPSS
0.1% · 2th 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

Affected versions

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

  • linux linux kernel4.5 and later · before 6.6.136
  • linux linux kernel6.7 and later · before 6.12.83
  • linux linux kernel6.13 and later · before 6.18.24
  • linux linux kernel6.19 and later · before 6.19.14
  • linux linux kernel7.0

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

    • 4.5affected
    • 214613656b5179f0daab6e0a080814b5100d45f0 and later · before c197def3834cbee3fd824ce4c57d08cb24e18955affected · git
    • 214613656b5179f0daab6e0a080814b5100d45f0 and later · before 9487daa18e627ac6b5ed5911be79f23362554b70affected · git
    • 214613656b5179f0daab6e0a080814b5100d45f0 and later · before 259e2bba3fd7005c62cbd42365a48b3221b244e3affected · git
    • 214613656b5179f0daab6e0a080814b5100d45f0 and later · before dd5c49787a32da96a2b154427eb17cbf12a83c28affected · git
    • 214613656b5179f0daab6e0a080814b5100d45f0 and later · before d8fdd6adc07b78ad3e9ee0004876d90cb59ca941affected · git
    • 214613656b5179f0daab6e0a080814b5100d45f0 and later · before e352e9adc9f6df54d63150ff832f71c04e30744baffected · git
    • 214613656b5179f0daab6e0a080814b5100d45f0 and later · before 3eb7dd55021d0f4308fbea0bea21d2118984d8e7affected · git
    • 214613656b5179f0daab6e0a080814b5100d45f0 and later · before 9525d169e5fd481538cf8c663cc5839e54f2e481affected · git
    • before 4.5not affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.176-16.1.176-1
Debian:13linuxbefore 6.12.85-16.12.85-1
Debian:14linuxbefore 6.19.14-16.19.14-1

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-2026-43102May 6, 2026 · net: airoha: Fix memory leak in airoha_qdma_rx_process()
    22Monitor
  • ← EarlierCVE-2026-43103May 6, 2026 · net: lapbether: handle NETDEV_PRE_TYPE_CHANGE
    22Monitor
  • Later →CVE-2026-43105May 6, 2026 · drm/vc4: Fix memory leak of BO array in hang state
    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 Linux259e2bba3fd7005c62cbd42365a48b3221b244e3Vendor (CNA)
Linux Linux3eb7dd55021d0f4308fbea0bea21d2118984d8e7Vendor (CNA)
Linux Linux9487daa18e627ac6b5ed5911be79f23362554b70Vendor (CNA)
Linux Linux9525d169e5fd481538cf8c663cc5839e54f2e481Vendor (CNA)
Linux Linuxc197def3834cbee3fd824ce4c57d08cb24e18955Vendor (CNA)
Linux Linuxd8fdd6adc07b78ad3e9ee0004876d90cb59ca941Vendor (CNA)
Linux Linuxdd5c49787a32da96a2b154427eb17cbf12a83c28Vendor (CNA)
Linux Linuxe352e9adc9f6df54d63150ff832f71c04e30744bVendor (CNA)
debian:linux6.1.176-1 · 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-401 · Missing Release of Memory after Effective Lifetime

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 (7 more)

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

All records