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NVD / CVE Program· CNA Linux

CVE-2025-40062: crypto: hisilicon/qm - set NULL to qm->debug.qm_diff_regs

Noroxi assessment

Priority: Monitor (action score 0/100)

  • 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: 0.19% (FIRST EPSS).
  • Fixed version: Linux Linux 1750f1ec143ebabdbdfa013668665c9d5042c430, 6.1.156, 6.10.

Low priority for now. Upgrade to Linux Linux 1750f1ec143ebabdbdfa013668665c9d5042c430, 6.1.156, 6.10 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: crypto: hisilicon/qm - set NULL to qm->debug.qm_diff_regs When the initialization of qm->debug.acc_diff_reg fails, the probe process does not exit. However, after qm->debug.qm_diff_regs is freed, it is not set to NULL. This can lead to a double free when the remove process attempts to free it again. Therefore, qm->debug.qm_diff_regs should be set to NULL after it is freed.

—No exploit Fix available
Published
Oct 28, 2025
Updated
Oct 19, 2026
EPSS
0.1% · 9th percentile
CWE
—

Report tools

JSON

Action score

0

Monitor

Low priority for now.

CVSS
0 / 40 · —
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.1%

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  • Not in KEV: no record of exploitation in the wild
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  • A fix has been released

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Noroxi analysis

What does it mean in your environment?

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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.

—

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

    • e0a2d2df9ba7bd6bd7e0a9b6a5e3894f7e8445b3, 6.10affected
    • eda60520cfe3aba9f088c68ebd5bcbca9fc6ac3c and later · before a7836260d5121949ba734e840d42a86ab4a32fccaffected · git
    • 7fc8d9a525b5c3f8dfa5ed50901e764d8ede7e1e and later · before 1750f1ec143ebabdbdfa013668665c9d5042c430affected · git
    • 8be0913389718e8d27c4f1d4537b5e1b99ed7739 and later · before a87a21a56244b8f4eb357f6bad879247005bbe38affected · git
    • 8be0913389718e8d27c4f1d4537b5e1b99ed7739 and later · before 7226a0650ad5705bd8d39a11be270fa21ed1e6a5affected · git
    • 8be0913389718e8d27c4f1d4537b5e1b99ed7739 and later · before f0cafb02de883b3b413d34eb079c9680782a9cc1affected · git
    • 6.1.98 and later · before 6.1.156affected · semver
    • 6.6.39 and later · before 6.6.112affected · semver
    • 6.9.9 and later · before 6.10affected · semver
    • before 6.10not affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.158-16.1.158-1
Debian:13linuxbefore 6.12.57-16.12.57-1
Debian:14linuxbefore 6.17.6-16.17.6-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-74705udp: fix potential use-after-free in tunnel segmentation
    40Plan
  • CVE-2026-74612veth: fix skb length accounting after XDP frag adjustment
    40Plan
  • CVE-2026-74475vxlan: use neigh_ha_snapshot() in route_shortcircuit()
    40Plan

Published before and after this one in the same product

  • ← EarlierCVE-2025-40060Oct 28, 2025 · coresight: trbe: Return NULL pointer for allocation failures
    0Monitor
  • ← EarlierCVE-2025-40061Oct 28, 2025 · RDMA/rxe: Fix race in do_task() when draining
    31Monitor
  • Later →CVE-2025-40063Oct 28, 2025 · crypto: comp - Use same definition of context alloc and free ops
    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 / packageFixed versionSource
Linux Linux1750f1ec143ebabdbdfa013668665c9d5042c430Vendor (CNA)
Linux Linux6.1.156Vendor (CNA)
Linux Linux6.10Vendor (CNA)
Linux Linux6.6.112Vendor (CNA)
Linux Linux7226a0650ad5705bd8d39a11be270fa21ed1e6a5Vendor (CNA)
Linux Linuxa7836260d5121949ba734e840d42a86ab4a32fccVendor (CNA)
Linux Linuxa87a21a56244b8f4eb357f6bad879247005bbe38Vendor (CNA)
Linux Linuxf0cafb02de883b3b413d34eb079c9680782a9cc1Vendor (CNA)
debian:linux6.1.158-1 · 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

No CVSS vector for this record, so attack conditions can't be derived.

Weakness class (CWE)

—

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✗ → ✓

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References

Show all references (4 more)

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

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