CVE-2026-64478: Linux kernel · ALSA: usb-audio: avoid kobject path lookup in DualSense match
Affects Linux kernelSource GCVE Database
Not known to be exploited · fixed in 5.15.0-1117.124~20.04.1 : update Linux kernel when convenient.
Data as of 26 Oct 2026, 14:05 UTC
Rated by Threat Radar · No CVSS score from NVD or the CNA
- EPSS
- 0.1% chance of exploitation in 30 days – higher than 7% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 5.15.0-1117.124~20.04.1, 5.15.0-1123.132~20.04.1, 5.15.0-1122.131~20.04.1 +43
Exploitation evidence
Disclosed: evidence found.
CVE published 25 Jul 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
Upgrade to a fixed release listed under Affected software.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Ubuntu 26.04 LTSlinuxpkg:deb/ubuntu/linux?arch=source&distro=resoluteOther threats | Affected
| Fixed in
|
Ubuntu 26.04 LTSlinux-awspkg:deb/ubuntu/linux-aws?arch=source&distro=resoluteOther threats | Affected
| Fixed in
|
Ubuntu 26.04 LTSlinux-azurepkg:deb/ubuntu/linux-azure?arch=source&distro=resoluteOther threats | Affected
| Fixed in
|
Ubuntu 26.04 LTSlinux-azure-fdepkg:deb/ubuntu/linux-azure-fde?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-gcppkg:deb/ubuntu/linux-gcp?arch=source&distro=resoluteOther threats | Affected
| Fixed in
|
Ubuntu 26.04 LTSlinux-gkepkg:deb/ubuntu/linux-gke?arch=source&distro=resoluteOther threats | Affected
| Fixed in
|
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
A patch is available that fixes this issue by changing the ownership check method in the ALSA usb-audio DualSense input handler. Users should apply the official Linux kernel updates provided by their distribution, such as the Ubuntu security notice USN-8726-1, to remediate this vulnerability.
Description
A vulnerability in the Linux kernel's ALSA usb-audio subsystem related to the DualSense jack-detection input handler was resolved. The issue involved unsafe kobject path lookups during USB device disconnects, which could cause faults due to dereferencing invalid kobject names. The flaw was fixed by changing the ownership check to avoid building kobject path strings, thus preventing faults during device hotplug events.
References
- nvd.nist.gov/vuln/detail/CVE-2026-64478 (opens in a new tab)
- git.kernel.org/stable/c/4246dd043b7a4f8e3bc1d2896e81d11220610eda (opens in a new tab)
- git.kernel.org/stable/c/4566bf8ae9dbfe81bdc2ff1702d59db8a233b06e (opens in a new tab)
- git.kernel.org/stable/c/662a1d7b5affc424ea4f4bc20dd99be29e687886 (opens in a new tab)
- git.kernel.org/stable/c/7693c0cc415f3a16a7a3355f245474a5e661be4e (opens in a new tab)
- git.kernel.org/stable/c/a263eb12cbe2e208e6e637df0f9b0be9a484158e (opens in a new tab)
- git.kernel.org/stable/c/a47ecd904c51ae6a42957feb3cf2f4266adee2e5 (opens in a new tab)
- git.kernel.org/stable/c/c1da6d3f45036fa63672ee04ad97cb526b40b987 (opens in a new tab)
- git.kernel.org/stable/c/e4c66a149c408e44e60bfec3fabf08b6b7abbc60 (opens in a new tab)
- ubuntu.com/security/CVE-2026-64478 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2026-64478 (opens in a new tab)
- git.kernel.org/linus/7693c0cc415f3a16a7a3355f245474a5e661be4e (opens in a new tab)
- ubuntu.com/security/notices/USN-8726-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8727-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8728-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8760-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8726-2 (opens in a new tab)
- ubuntu.com/security/notices/USN-8726-3 (opens in a new tab)
- ubuntu.com/security/notices/USN-8800-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8760-2 (opens in a new tab)
- ubuntu.com/security/notices/USN-8728-2 (opens in a new tab)