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NVD / CVE Program· CNA Linux

CVE-2026-64478: ALSA: usb-audio: avoid kobject path lookup in DualSense match

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 4246dd043b7a4f8e3bc1d2896e81d11220610eda, 4566bf8ae9dbfe81bdc2ff1702d59db8a233b06e, 5.10.261; azl3 kernel 6.6.144.1-1 on Azure Linux 3.0 6.6.145.2-1.

Low priority for now. Upgrade to Linux Linux 4246dd043b7a4f8e3bc1d2896e81d11220610eda, 4566bf8ae9dbfe81bdc2ff1702d59db8a233b06e, 5.10.261; azl3 kernel 6.6.144.1-1 on Azure Linux 3.0 6.6.145.2-1 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: ALSA: usb-audio: avoid kobject path lookup in DualSense match The DualSense jack-detection input handler verifies that a matching input device belongs to the same physical controller by building kobject path strings for both the input device and the USB audio device, then comparing the path prefix. This was observed when a weak physical connection caused the controller to rapidly disconnect and reconnect. During that repeated hotplug, snd_dualsense_ih_match() can run while the controller's USB device is being disconnected. kobject_get_path() walks ancestor kobjects and dereferences their names; if the USB device kobject name is no longer valid, this can fault in strlen(): RIP: 0010:strlen+0x10/0x30 Call Trace: kobject_get_path+0x34/0x150 snd_dualsense_ih_match+0x49/0xd0 [snd_usb_audio] input_register_device+0x566/0x6a0 ps_probe+0xb89/0x1590 [hid_playstation] The same ownership check can be done without building kobject path strings. The input device is parented below the HID device, USB interface and USB device, so walking the input device parent chain and comparing against the mixer USB device preserves the check without dereferencing kobject names during disconnect.

—No exploit Fix available
Published
Jul 25, 2026
Updated
Aug 17, 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?

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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

    • 104ad9bae11ee450fb7d0595ff7876cfb6527838, 0105cfc41abeb428d4405951a20e1e239bea5e1d, 6.17affected
    • d0b0264009596c07a77d82808b0dae72bc04ac5c and later · before e4c66a149c408e44e60bfec3fabf08b6b7abbc60affected · git
    • b4b94f092f193d7a2db8e82af5e51519ae89963c and later · before 4566bf8ae9dbfe81bdc2ff1702d59db8a233b06eaffected · git
    • c2d5b0a6c688ffb32c35627e337fbbcc65bc275f and later · before 662a1d7b5affc424ea4f4bc20dd99be29e687886affected · git
    • d04d301614630724feb4048bf17432fc7964fe74 and later · before a47ecd904c51ae6a42957feb3cf2f4266adee2e5affected · git
    • a705899ec6085b12a33aa0fd94a58e82e9e90502 and later · before c1da6d3f45036fa63672ee04ad97cb526b40b987affected · git
    • 79d561c4ec0497669f19a9550cfb74812f60938b and later · before a263eb12cbe2e208e6e637df0f9b0be9a484158eaffected · git
    • 79d561c4ec0497669f19a9550cfb74812f60938b and later · before 4246dd043b7a4f8e3bc1d2896e81d11220610edaaffected · git
    • 79d561c4ec0497669f19a9550cfb74812f60938b and later · before 7693c0cc415f3a16a7a3355f245474a5e661be4eaffected · git
    • 5.10.245 and later · before 5.10.261affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.180-16.1.180-1
Debian:12linux-6.12before 6.12.100-1~deb12u16.12.100-1~deb12u1
Debian:13linuxbefore 6.12.96-16.12.96-1
Debian:14linuxbefore 7.1.4-17.1.4-1

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-2026-64476Jul 25, 2026 · vfio/pci: Latch disable_idle_d3 per device
    0Monitor
  • ← EarlierCVE-2026-64477Jul 25, 2026 · x86,fs/resctrl: Prevent out-of-bounds access while offlining CPU when SNC enabled
    0Monitor
  • Later →CVE-2026-64479Jul 25, 2026 · ALSA: seq: Fix uninitialised heap leak in snd_seq_event_dup()
    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 Linux4246dd043b7a4f8e3bc1d2896e81d11220610edaVendor (CNA)
Linux Linux4566bf8ae9dbfe81bdc2ff1702d59db8a233b06eVendor (CNA)
Linux Linux5.10.261Vendor (CNA)
Linux Linux5.15.212Vendor (CNA)
Linux Linux5.5Vendor (CNA)
Linux Linux6.1.178Vendor (CNA)
Linux Linux6.12.96Vendor (CNA)
Linux Linux6.17Vendor (CNA)
Linux Linux6.6.145Vendor (CNA)
Linux Linux662a1d7b5affc424ea4f4bc20dd99be29e687886Vendor (CNA)
Linux Linux7693c0cc415f3a16a7a3355f245474a5e661be4eVendor (CNA)
Linux Linuxa263eb12cbe2e208e6e637df0f9b0be9a484158eVendor (CNA)
Linux Linuxa47ecd904c51ae6a42957feb3cf2f4266adee2e5Vendor (CNA)
Linux Linuxc1da6d3f45036fa63672ee04ad97cb526b40b987Vendor (CNA)
Linux Linuxe4c66a149c408e44e60bfec3fabf08b6b7abbc60Vendor (CNA)
azl3 kernel 6.6.144.1-1 on Azure Linux 3.06.6.145.2-1 · CBL-Mariner ReleasesMicrosoft (MSRC)
debian:linux6.1.180-1 · Debian:12Package registry (OSV)
debian:linux-6.126.12.100-1~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.

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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 (7 more)

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

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