CVE-2026-43290

Description

In the Linux kernel, the following vulnerability has been resolved: media: uvcvideo: Return queued buffers on start_streaming() failure Return buffers if streaming fails to start due to uvc_pm_get() error. This bug may be responsible for a warning I got running while :; do yavta -c3 /dev/video0; done on an xHCI controller which failed under this workload. I had no luck reproducing this warning again to confirm. xhci_hcd 0000:09:00.0: HC died; cleaning up usb 13-2: USB disconnect, device number 2 WARNING: CPU: 2 PID: 29386 at drivers/media/common/videobuf2/videobuf2-core.c:1803 vb2_start_streaming+0xac/0x120

CVSS Details

CVSS Score

7.8

Severity

HIGH

CVSS Vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Configurations (Affected Products)

No configuration data available.

Linux Kernel (具体受影响版本需参考Git提交记录修复)

PoC / Exploit Code

⚠ For Security Research Only

The following code is for security research and authorized testing only.

python

#!/bin/bash

# PoC for CVE-2026-43290
# Description: Trigger the uvcvideo buffer leak by looping video capture attempts.
# Requirements: yavta tool, accessible video device (e.g., /dev/video0)

while true; do
    echo "Triggering capture attempt..."
    # -c3 captures 3 frames
    yavta -c3 /dev/video0
done

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-43290
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-43290
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-43290/
[4] VulDB https://vuldb.com/cve/CVE-2026-43290
[5] https://git.kernel.org/stable/c/4cf3b6fd54ebb1ebc977bdc47fb6cfcf9a471a22
[6] https://git.kernel.org/stable/c/69c32df23bed6001864779b965fa009bcd9a26de
[7] https://git.kernel.org/stable/c/a5c01f15809d1d2c319d8bfb11d071df11ab731c

Raw JSON Data

JSON

{"cve": {"id": "CVE-2026-43290", "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "published": "2026-05-08T14:16:36.010", "lastModified": "2026-05-11T08:16:08.397", "vulnStatus": "Received", "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: uvcvideo: Return queued buffers on start_streaming() failure\n\nReturn buffers if streaming fails to start due to uvc_pm_get() error.\n\nThis bug may be responsible for a warning I got running\n\n    while :; do yavta -c3 /dev/video0; done\n\non an xHCI controller which failed under this workload.\nI had no luck reproducing this warning again to confirm.\n\nxhci_hcd 0000:09:00.0: HC died; cleaning up\nusb 13-2: USB disconnect, device number 2\nWARNING: CPU: 2 PID: 29386 at drivers/media/common/videobuf2/videobuf2-core.c:1803 vb2_start_streaming+0xac/0x120"}], "metrics": {"cvssMetricV31": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 1.8, "impactScore": 5.9}]}, "references": [{"url": "https://git.kernel.org/stable/c/4cf3b6fd54ebb1ebc977bdc47fb6cfcf9a471a22", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/69c32df23bed6001864779b965fa009bcd9a26de", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/a5c01f15809d1d2c319d8bfb11d071df11ab731c", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}]}}