CVE-2026-43223

MediumCVSS 5.5/10Last modified Nov 11, 2026

Description

In the Linux kernel, the following vulnerability has been resolved:

media: pvrusb2: fix URB leak in pvr2_send_request_ex

When pvr2_send_request_ex() submits a write URB successfully but fails to submit the read URB (e.g. returns -ENOMEM), it returns immediately without waiting for the write URB to complete. Since the driver reuses the same URB structure, a subsequent call to pvr2_send_request_ex() attempts to submit the still-active write URB, triggering a 'URB submitted while active' warning in usb_submit_urb().

Fix this by ensuring the write URB is unlinked and waited upon if the read URB submission fails.

Metrics

CVSS 3.1 5.5/10CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-401

Affected software

VendorProductVersions
LinuxLinux>= d855497edbfbf9e19a17f4a1154bca69cb4bd9ba, < da524c939b1e5ba17f10db4bde4bdaf569ffcda6; >= d855497edbfbf9e19a17f4a1154bca69cb4bd9ba, < cf459d6ffa5e150ef3744b897f936ff24b52bd15; >= d855497edbfbf9e19a17f4a1154bca69cb4bd9ba, < 77a63f8efc434ddb04667ed632aade58301a2f13; >= d855497edbfbf9e19a17f4a1154bca69cb4bd9ba, < 4ba5c7a1aade7090172cbffd4d120bf4cf5ccbde; >= d855497edbfbf9e19a17f4a1154bca69cb4bd9ba, < 58dd722b6c3debcddb4684fb256c90fee7f063e5; >= d855497edbfbf9e19a17f4a1154bca69cb4bd9ba, < 2011929f0e4cf6a0a34dd6205911b12276904453; >= d855497edbfbf9e19a17f4a1154bca69cb4bd9ba, < 5f3ac816861c3b8a5d1a3645b17dc3a99d668d94; >= d855497edbfbf9e19a17f4a1154bca69cb4bd9ba, < a8333c8262aed2aedf608c18edd39cf5342680a7
LinuxLinux2.6.18

References

Timeline

Published
May 6, 2026
Last modified
Nov 11, 2026
NVD status
Analyzed

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CVE-2026-43223: Medium severity, CVSS 5.5 | Vulnix