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NVD / CVE Program· CNA Linux

CVE-2026-93280: greybus: audio: bound the topology section sizes against the fetched size

Noroxi assessment

Priority: Monitor (action score 35/100)

  • 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: 0.32% (FIRST EPSS).
  • Someone on the same network segment 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 33d8c7b794d2a30637c9d3fcb478f1d3222bef1e, 52daf9de692ebac813d110eb1e677dc0e1f4a5ab, 6f764363b3173d805be11e59a8f23ecee2d420d5; azl3 kernel 6.6.150.1-1 on Azure Linux 3.0 6.6.157.1-1.

Low priority for now. Upgrade to Linux Linux 33d8c7b794d2a30637c9d3fcb478f1d3222bef1e, 52daf9de692ebac813d110eb1e677dc0e1f4a5ab, 6f764363b3173d805be11e59a8f23ecee2d420d5; azl3 kernel 6.6.150.1-1 on Azure Linux 3.0 6.6.157.1-1 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: greybus: audio: bound the topology section sizes against the fetched size gb_audio_gb_get_topology() fetches a topology blob of a module-supplied size, and gbaudio_tplg_parse_data() then walks it by adding the module-supplied size_dais, size_controls and size_widgets fields to form the control, widget and route section offsets. Those le32 sizes are never checked against the fetched blob, so a module reporting a small topology size but large section sizes makes the offsets point past the allocation, and parsing reads out of bounds. Reject a topology whose section sizes do not fit within the fetched size before it is parsed.

HighCVSS 8.8 · v3.1—No exploit Fix available
Published
Sep 24, 2026
Updated
Oct 19, 2026
EPSS
0.3% · 25th percentile
CWE
—

Report tools

JSON

Action score

35

Monitor

Low priority for now.

CVSS
35 / 40 · 8.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.3%

CNA vs NVD score

NVD
—
CNA · Linux
8.8
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.

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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

  • 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

    • 4.9affected
    • 184992e305f1de3a3d5fa446da3a2bc76be7c54a and later · before ba86de9f7b0d7903d2df5ea2373e34d8ca3fc43eaffected · git
    • 184992e305f1de3a3d5fa446da3a2bc76be7c54a and later · before dd5593aee0a0fb353e1164aff7b65e563fe1f232affected · git
    • 184992e305f1de3a3d5fa446da3a2bc76be7c54a and later · before 6f764363b3173d805be11e59a8f23ecee2d420d5affected · git
    • 184992e305f1de3a3d5fa446da3a2bc76be7c54a and later · before 52daf9de692ebac813d110eb1e677dc0e1f4a5abaffected · git
    • 184992e305f1de3a3d5fa446da3a2bc76be7c54a and later · before d0f6eaba60705bacd9bb4ce48eab50ef3f546777affected · git
    • 184992e305f1de3a3d5fa446da3a2bc76be7c54a and later · before c9191f2e2f35f1209eb2dc24b31129dd47b48c16affected · git
    • 184992e305f1de3a3d5fa446da3a2bc76be7c54a and later · before cfcc5a41a9664eb68023aae4cd0d485b256bd7c7affected · git
    • 184992e305f1de3a3d5fa446da3a2bc76be7c54a and later · before 33d8c7b794d2a30637c9d3fcb478f1d3222bef1eaffected · git
    • before 4.9not 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-2026-93278Sep 24, 2026 · staging: octeon: add missing napi_disable in cvm_oct_rx_shutdown
    0Monitor
  • ← EarlierCVE-2026-93279Sep 24, 2026 · staging: octeon: add missing tasklet_kill in cvm_oct_tx_shutdown
    0Monitor
  • Later →CVE-2026-93281Sep 24, 2026 · wifi: rtw89: fix HE extended capability length check
    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 Linux33d8c7b794d2a30637c9d3fcb478f1d3222bef1eVendor (CNA)
Linux Linux52daf9de692ebac813d110eb1e677dc0e1f4a5abVendor (CNA)
Linux Linux6f764363b3173d805be11e59a8f23ecee2d420d5Vendor (CNA)
Linux Linuxba86de9f7b0d7903d2df5ea2373e34d8ca3fc43eVendor (CNA)
Linux Linuxc9191f2e2f35f1209eb2dc24b31129dd47b48c16Vendor (CNA)
Linux Linuxcfcc5a41a9664eb68023aae4cd0d485b256bd7c7Vendor (CNA)
Linux Linuxd0f6eaba60705bacd9bb4ce48eab50ef3f546777Vendor (CNA)
Linux Linuxdd5593aee0a0fb353e1164aff7b65e563fe1f232Vendor (CNA)
azl3 kernel 6.6.150.1-1 on Azure Linux 3.06.6.157.1-1 · 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 on the same network segment 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
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Adjacent
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

—

CVSS vector

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/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 (7 more)

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

All records