Linux Kernel up to 6.6.129/6.12.77/6.18.18/6.19.8 xhci_irq state issue

CVSS Meta Temp Score
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CTI Interest Score
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5.4$0-$5k0.00

Summaryinfo

A vulnerability categorized as critical has been discovered in Linux Kernel up to 6.6.129/6.12.77/6.18.18/6.19.8. The impacted element is the function xhci_irq. The manipulation results in state issue. This vulnerability is identified as CVE-2026-43488. There is not any exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical has been found in Linux Kernel up to 6.6.129/6.12.77/6.18.18/6.19.8. Affected is the function xhci_irq. The manipulation with an unknown input leads to a state issue vulnerability. CWE is classifying the issue as CWE-371. The impact remains unknown. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: usb: xhci: Prevent interrupt storm on host controller error (HCE) The xHCI controller reports a Host Controller Error (HCE) in UAS Storage Device plug/unplug scenarios on Android devices. HCE is checked in xhci_irq() function and causes an interrupt storm (since the interrupt isn’t cleared), leading to severe system-level faults. When the xHC controller reports HCE in the interrupt handler, the driver only logs a warning and assumes xHC activity will stop as stated in xHCI specification. An interrupt storm does however continue on some hosts even after HCE, and only ceases after manually disabling xHC interrupt and stopping the controller by calling xhci_halt(). Add xhci_halt() to xhci_irq() function where STS_HCE status is checked, mirroring the existing error handling pattern used for STS_FATAL errors. This only fixes the interrupt storm. Proper HCE recovery requires resetting and re-initializing the xHC.

The advisory is available at git.kernel.org. This vulnerability is traded as CVE-2026-43488 since 05/01/2026. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 07/23/2026).

The vulnerability scanner Nessus provides a plugin with the ID 314480 (Linux Distros Unpatched Vulnerability : CVE-2026-43488), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 6.6.130, 6.12.78, 6.18.19 or 6.19.9 eliminates this vulnerability. Applying the patch b2dd9abf8c06cfcbcf242321fd54ae51a4807705/6f91f3f087194c114d6d8ea4591b850bb00672f8/cd41e0d1df8fcf5eae294657da52b50d1ce03246/09ff0099c6cf148ff1f7053b5b6c84beb1c2ef8d/d6d5febd12452b7fd951fdd15c3ec262f01901a4 is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the databases at Tenable (314480), EUVD (EUVD-2026-30024) and CERT Bund (WID-SEC-2026-1531). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Affected

  • Google Container-Optimized OS
  • Debian Linux
  • SUSE Linux
  • Oracle Linux
  • Open Source Linux Kernel
  • Ubuntu Linux

Productinfo

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Version

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.4

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔒

CVSSv2info

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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: State issue
CWE: CWE-371
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 314480
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2026-43488

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 6.6.130/6.12.78/6.18.19/6.19.9
Patch: b2dd9abf8c06cfcbcf242321fd54ae51a4807705/6f91f3f087194c114d6d8ea4591b850bb00672f8/cd41e0d1df8fcf5eae294657da52b50d1ce03246/09ff0099c6cf148ff1f7053b5b6c84beb1c2ef8d/d6d5febd12452b7fd951fdd15c3ec262f01901a4

Timelineinfo

05/01/2026 CVE reserved
05/13/2026 +12 days Advisory disclosed
05/13/2026 +0 days VulDB entry created
07/23/2026 +71 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2026-43488 (🔒)
GCVE (CVE): GCVE-0-2026-43488
GCVE (VulDB): GCVE-100-363546
EUVD: 🔒
CERT Bund: WID-SEC-2026-1531 - Linux Kernel: Mehrere Schwachstellen

Entryinfo

Created: 05/13/2026 17:38
Updated: 07/23/2026 02:08
Changes: 05/13/2026 17:38 (58), 05/14/2026 00:33 (1), 05/14/2026 10:52 (2), 05/17/2026 17:19 (7), 06/26/2026 22:10 (10), 07/23/2026 02:08 (1)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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