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NVD / CVE Program· CNA Linux

CVE-2026-97453: ACPICA: validate byte_count in acpi_ps_get_next_package_length()

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: 0.17% (FIRST EPSS).
  • Fixed version: Linux Linux 37e60db04eed9d6c5801d63f99cfd3af99b9a2c8, 6b9904fc65d82bea4922a33038d075488954bcc9, 6e0d26e6ec90340533722214b7a923521f91caa2; 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 37e60db04eed9d6c5801d63f99cfd3af99b9a2c8, 6b9904fc65d82bea4922a33038d075488954bcc9, 6e0d26e6ec90340533722214b7a923521f91caa2; 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: validate byte_count in acpi_ps_get_next_package_length() Validate package length reading in acpi_ps_get_next_package_length().

—No exploit Fix available
Published
Sep 24, 2026
Updated
Oct 3, 2026
EPSS
0.1% · 6th 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
  • No public exploit code on record
  • A fix has been released

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When you'll hear from us

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  • when exploit code appears or is weaponized
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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 6b9904fc65d82bea4922a33038d075488954bcc9affected · git
    • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and later · before 802f83e628b8fa6106428ef05d3fb03f99816fd6affected · git
    • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and later · before 37e60db04eed9d6c5801d63f99cfd3af99b9a2c8affected · git
    • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and later · before 6e0d26e6ec90340533722214b7a923521f91caa2affected · git
    • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and later · before 780f380c66b80030379bec65bb1bd09ce6f6d9fcaffected · git
    • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and later · before 9bc0e8c3df689765ad5161eb3aed15de8544f5ceaffected · git
    • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and later · before d49c6ee08365a8596f639da46eb7e71752b0cd42affected · 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-2026-97451Sep 24, 2026 · ACPICA: Fix integer overflow in acpi_ex_opcode_3A_1T_1R() (mid_op)
    33Monitor
  • ← EarlierCVE-2026-97452Sep 24, 2026 · ACPICA: Prevent adding invalid references
    33Monitor
  • Later →CVE-2026-97454Sep 24, 2026 · ACPICA: add boundary checks in acpi_ps_get_next_field()
    30Monitor

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 Linux37e60db04eed9d6c5801d63f99cfd3af99b9a2c8Vendor (CNA)
Linux Linux6b9904fc65d82bea4922a33038d075488954bcc9Vendor (CNA)
Linux Linux6e0d26e6ec90340533722214b7a923521f91caa2Vendor (CNA)
Linux Linux780f380c66b80030379bec65bb1bd09ce6f6d9fcVendor (CNA)
Linux Linux802f83e628b8fa6106428ef05d3fb03f99816fd6Vendor (CNA)
Linux Linux9bc0e8c3df689765ad5161eb3aed15de8544f5ceVendor (CNA)
Linux Linuxd49c6ee08365a8596f639da46eb7e71752b0cd42Vendor (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

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 (6 more)

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

All records