Medium 5.5Published May 6, 2026

CVE-2026-43223media: pvrusb2: fix URB leak in pvr2_send_request_ex

Updated under an hour ago (Oct 28, 2026, 2:10 AM ET)

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Exploited in the last 30 days

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.

CVSS: 5.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Analyzed
Record last updated: May 11, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from d855497edbfbf9e19a17f4a1154bca69cb4bd9ba before da524c939b1e5ba17f10db4bde4bdaf569ffcda6; from d855497edbfbf9e19a17f4a1154bca69cb4bd9ba before cf459d6ffa5e150ef3744b897f936ff24b52bd15; from d855497edbfbf9e19a17f4a1154bca69cb4bd9ba before 77a63f8efc434ddb04667ed632aade58301a2f13; from d855497edbfbf9e19a17f4a1154bca69cb4bd9ba before 4ba5c7a1aade7090172cbffd4d120bf4cf5ccbde; from d855497edbfbf9e19a17f4a1154bca69cb4bd9ba before 58dd722b6c3debcddb4684fb256c90fee7f063e5; from d855497edbfbf9e19a17f4a1154bca69cb4bd9ba before 2011929f0e4cf6a0a34dd6205911b12276904453; from d855497edbfbf9e19a17f4a1154bca69cb4bd9ba before 5f3ac816861c3b8a5d1a3645b17dc3a99d668d94; from d855497edbfbf9e19a17f4a1154bca69cb4bd9ba before a8333c8262aed2aedf608c18edd39cf5342680a7	CNA record
linux linux_kernel linux:linux_kernel	from 2.6.18 before 5.10.252; from 5.11 before 5.15.202; from 5.16 before 6.1.165; from 6.2 before 6.6.128; from 6.7 before 6.12.75; from 6.13 before 6.18.16; from 6.19 before 6.19.6	NVD

References

References

https://git.kernel.org/stable/c/da524c939b1e5ba17f10db4bde4bdaf569ffcda6	patch
https://git.kernel.org/stable/c/cf459d6ffa5e150ef3744b897f936ff24b52bd15	patch
https://git.kernel.org/stable/c/77a63f8efc434ddb04667ed632aade58301a2f13	patch
https://git.kernel.org/stable/c/4ba5c7a1aade7090172cbffd4d120bf4cf5ccbde	patch
https://git.kernel.org/stable/c/58dd722b6c3debcddb4684fb256c90fee7f063e5	patch
https://git.kernel.org/stable/c/2011929f0e4cf6a0a34dd6205911b12276904453	patch
https://git.kernel.org/stable/c/5f3ac816861c3b8a5d1a3645b17dc3a99d668d94	patch
https://git.kernel.org/stable/c/a8333c8262aed2aedf608c18edd39cf5342680a7	patch

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.