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NVD / CVE Program· CNA Linux

CVE-2025-68298: Bluetooth: btusb: mediatek: Avoid btusb_mtk_claim_iso_intf() NULL deref

—No exploit Fix available

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: 0.18% (FIRST EPSS).
  • Fixed version: Linux Linux 2fa09fe98ca3b114d66285f65f7e108fea131815, 6.12.61, 6.14.

Low priority for now. Upgrade to Linux Linux 2fa09fe98ca3b114d66285f65f7e108fea131815, 6.12.61, 6.14 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: Bluetooth: btusb: mediatek: Avoid btusb_mtk_claim_iso_intf() NULL deref In btusb_mtk_setup(), we set `btmtk_data->isopkt_intf` to: usb_ifnum_to_if(data->udev, MTK_ISO_IFNUM) That function can return NULL in some cases. Even when it returns NULL, though, we still go on to call btusb_mtk_claim_iso_intf(). As of commit e9087e828827 ("Bluetooth: btusb: mediatek: Add locks for usb_driver_claim_interface()"), calling btusb_mtk_claim_iso_intf() when `btmtk_data->isopkt_intf` is NULL will cause a crash because we'll end up passing a bad pointer to device_lock(). Prior to that commit we'd pass the NULL pointer directly to usb_driver_claim_interface() which would detect it and return an error, which was handled. Resolve the crash in btusb_mtk_claim_iso_intf() by adding a NULL check at the start of the function. This makes the code handle a NULL `btmtk_data->isopkt_intf` the same way it did before the problematic commit (just with a slight change to the error message printed).

Published
Dec 16, 2025
Updated
Oct 14, 2026
EPSS
0.1% · 8th 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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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

    • 4194766ec8756f4f654d595ae49962acbac49490, 6.14affected
    • 930e1790b99e5839e1af69d2f7fd808f1fba2df9 and later · before 2fa09fe98ca3b114d66285f65f7e108fea131815affected · git
    • e9087e828827e5a5c85e124ce77503f2b81c3491 and later · before c3b990e0b23068da65f0004cd38ee31f43f36460affected · git
    • e9087e828827e5a5c85e124ce77503f2b81c3491 and later · before c884a0b27b4586e607431d86a1aa0bb4fb39169caffected · git
    • 6.12.13 and later · before 6.12.61affected · semver
    • 6.13.2 and later · before 6.14affected · semver
    • before 6.14not affected · semver
    • 6.12.61 and later · up to and including 6.12.*not affected · semver
    • 6.17.11 and later · up to and including 6.17.*not affected · semver
    • 6.18 and laternot affected · original_commit_for_fix

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:13linuxbefore 6.12.63-16.12.63-1
Debian:14linuxbefore 6.17.11-16.17.11-1

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-2025-68296Dec 16, 2025 · drm, fbcon, vga_switcheroo: Avoid race condition in fbcon setup
    0Monitor
  • ← EarlierCVE-2025-68297Dec 16, 2025 · ceph: fix crash in process_v2_sparse_read() for encrypted directories
    0Monitor
  • Later →CVE-2025-68299Dec 16, 2025 · afs: Fix delayed allocation of a cell's anonymous key
    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 Linux2fa09fe98ca3b114d66285f65f7e108fea131815Vendor (CNA)
Linux Linux6.12.61Vendor (CNA)
Linux Linux6.14Vendor (CNA)
Linux Linuxc3b990e0b23068da65f0004cd38ee31f43f36460Vendor (CNA)
Linux Linuxc884a0b27b4586e607431d86a1aa0bb4fb39169cVendor (CNA)
debian:linux6.12.63-1 · Debian:13Package 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.

Not on record for this CVE: EPSS history · patch commit or PR link · researcher credit · variant or chain candidate · public bounty program.

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.

References

Show all references (2 more)

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

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