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NVD / CVE Program· CNA Linux

CVE-2026-97445: ACPICA: Enhance buffer validation in acpi_ut_walk_aml_resources()

Noroxi assessment

Priority: Monitor (action score 30/100)

  • 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: 0.15% (FIRST EPSS).
  • Someone with local access to the system can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: Linux Linux 37c794f87a72471f7ef71633ac0550ad14ac0885, 50a11e2f3dc8a7189e7ebbd3eeafa51f16128a56, 816badec122fe01d05265f2d306212739f5d3fdb; azl3 kernel 6.6.157.1-1 on Azure Linux 3.0 6.6.158.1-1.

Low priority for now. Upgrade to Linux Linux 37c794f87a72471f7ef71633ac0550ad14ac0885, 50a11e2f3dc8a7189e7ebbd3eeafa51f16128a56, 816badec122fe01d05265f2d306212739f5d3fdb; azl3 kernel 6.6.157.1-1 on Azure Linux 3.0 6.6.158.1-1 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: ACPICA: Enhance buffer validation in acpi_ut_walk_aml_resources() Enhance buffer validation in acpi_ut_walk_aml_resources() to prevent buffer overflows.

HighCVSS 7.7 · v3.1—No exploit Fix available
Published
Sep 24, 2026
Updated
Oct 3, 2026
EPSS
0.1% · 4th percentile
CWE
—

Report tools

JSON

Action score

30

Monitor

Low priority for now.

CVSS
30 / 40 · 7.7 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.1%

CNA vs NVD score

NVD
—
CNA · Linux
7.7
NVD has not scored this yet; the score shown is the CNA’s.

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

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2026-97445

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.

—

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

    • 2.6.12affected
    • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and later · before 816badec122fe01d05265f2d306212739f5d3fdbaffected · git
    • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and later · before cd60a407a3a6d75347a04f9271b7b561d06d21c8affected · git
    • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and later · before 37c794f87a72471f7ef71633ac0550ad14ac0885affected · git
    • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and later · before 50a11e2f3dc8a7189e7ebbd3eeafa51f16128a56affected · git
    • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and later · before f65e2ef7ccca11dc874f48aff996a6a26528f8e7affected · git
    • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and later · before d0fb1973f705c8b8bd7e118e4a9a65d05d800fbaaffected · git
    • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and later · before b2e21fe8c3361c3d0d57ee56d359bea9b51fda3daffected · git
    • before 2.6.12not affected · semver
    • 5.10.271 and later · up to and including 5.10.*not affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.190-16.1.190-1
Debian:12linux-6.12before 6.12.111-1~deb12u16.12.111-1~deb12u1
Debian:13linuxbefore 6.12.111-16.12.111-1
Debian:14linuxbefore 7.2.6-17.2.6-1

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-2026-97442Sep 24, 2026 · wifi: ath11k: fix invalid data access in ath11k_dp_rx_h_undecap_nwifi
    35Monitor
  • ← EarlierCVE-2026-97444Sep 24, 2026 · ACPICA: add boundary checks in two places
    30Monitor
  • Later →CVE-2026-97446Sep 24, 2026 · ACPICA: Fix NULL pointer dereference in acpi_ns_custom_package()
    0Monitor

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 Linux37c794f87a72471f7ef71633ac0550ad14ac0885Vendor (CNA)
Linux Linux50a11e2f3dc8a7189e7ebbd3eeafa51f16128a56Vendor (CNA)
Linux Linux816badec122fe01d05265f2d306212739f5d3fdbVendor (CNA)
Linux Linuxb2e21fe8c3361c3d0d57ee56d359bea9b51fda3dVendor (CNA)
Linux Linuxcd60a407a3a6d75347a04f9271b7b561d06d21c8Vendor (CNA)
Linux Linuxd0fb1973f705c8b8bd7e118e4a9a65d05d800fbaVendor (CNA)
Linux Linuxf65e2ef7ccca11dc874f48aff996a6a26528f8e7Vendor (CNA)
azl3 kernel 6.6.157.1-1 on Azure Linux 3.06.6.158.1-1 · Release NotesMicrosoft (MSRC)
debian:linux6.1.190-1 · Debian:12Package registry (OSV)
debian:linux6.12.111-1 · Debian:13Package registry (OSV)
debian:linux-6.126.12.111-1~deb12u1 · 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.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

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.
  • No account or password is required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
none
Availability
high · the service can be disrupted
Attack vector
Local
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
None
Availability impact
High

Weakness class (CWE)

—

CVSS vector

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

nvd-secondary

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 (6 more)

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

All records