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CVE-2026-93056· NVD / CVE Program· CNA Linux

usb: gadget: f_uac1_legacy: remove broken string configfs attributes

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 021b58ac3e58cffa68ed9585ff492a19e98414f6, 2ed25c9d4400cf90d9201657963a231c27a5ea57, 590d74ec8f488e06b9f1c0f8f0941f45531f3a55.

Low priority for now. Upgrade to Linux Linux 021b58ac3e58cffa68ed9585ff492a19e98414f6, 2ed25c9d4400cf90d9201657963a231c27a5ea57, 590d74ec8f488e06b9f1c0f8f0941f45531f3a55 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: usb: gadget: f_uac1_legacy: remove broken string configfs attributes The UAC1_STR_ATTRIBUTE macro defines configfs show/store handlers for the fn_play, fn_cap, and fn_cntl string options. The store function contains an inverted null check on the kstrndup() return value. This means every write attempt returns -ENOMEM on success and dereferences a NULL pointer on allocation failure. The attributes have been broken and unused for many years. Remove the UAC1_STR_ATTRIBUTE macro and the three attributes it generated. The internal defaults (FILE_PCM_PLAYBACK, FILE_PCM_CAPTURE, FILE_CONTROL) set in f_audio_alloc_inst() are unaffected.

—No exploit Fix available
Published
Sep 17, 2026
Updated
Sep 17, 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%

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

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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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  • 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

    • 3.18affected
    • 0854611a19ae4dfa56569e6f640017a1d2dd3312 and later · before 745adfe6c337f3d5d7737d57529d14a208151b45affected · git
    • 0854611a19ae4dfa56569e6f640017a1d2dd3312 and later · before 6351ba62778f72dc4f6bc18bfa99e618829cff0daffected · git
    • 0854611a19ae4dfa56569e6f640017a1d2dd3312 and later · before 021b58ac3e58cffa68ed9585ff492a19e98414f6affected · git
    • 0854611a19ae4dfa56569e6f640017a1d2dd3312 and later · before fd43eae7d539ea7cfc7c9f0d3f0eaa890415e8a7affected · git
    • 0854611a19ae4dfa56569e6f640017a1d2dd3312 and later · before 8b9335aec93975bb9186d63993a5a610e5066ffcaffected · git
    • 0854611a19ae4dfa56569e6f640017a1d2dd3312 and later · before 2ed25c9d4400cf90d9201657963a231c27a5ea57affected · git
    • 0854611a19ae4dfa56569e6f640017a1d2dd3312 and later · before 977659adb341f6e30fb00dcf183f63f29df879e2affected · git
    • 0854611a19ae4dfa56569e6f640017a1d2dd3312 and later · before 590d74ec8f488e06b9f1c0f8f0941f45531f3a55affected · git
    • before 3.18not 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-2026-93054Sep 17, 2026 · uio: Fix stale info pointer in failed registration path
    28Monitor
  • ← EarlierCVE-2026-93055Sep 17, 2026 · UDF symlink pathComponent header OOB read
    0Monitor
  • Later →CVE-2026-93057Sep 17, 2026 · scsi: ufs: core: Avoid possible memory reclaim deadlock in TX EQTR context
    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 Linux021b58ac3e58cffa68ed9585ff492a19e98414f6Vendor (CNA)
Linux Linux2ed25c9d4400cf90d9201657963a231c27a5ea57Vendor (CNA)
Linux Linux590d74ec8f488e06b9f1c0f8f0941f45531f3a55Vendor (CNA)
Linux Linux6351ba62778f72dc4f6bc18bfa99e618829cff0dVendor (CNA)
Linux Linux745adfe6c337f3d5d7737d57529d14a208151b45Vendor (CNA)
Linux Linux8b9335aec93975bb9186d63993a5a610e5066ffcVendor (CNA)
Linux Linux977659adb341f6e30fb00dcf183f63f29df879e2Vendor (CNA)
Linux Linuxfd43eae7d539ea7cfc7c9f0d3f0eaa890415e8a7Vendor (CNA)
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✗ → ✓

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