media: pvrusb2: fix URB leak in pvr2_send_request_ex

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Summary

CVECVE-2026-43223
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-05-06 12:16:42 UTC
Updated2026-05-08 21:14:54 UTC
DescriptionIn 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.

Risk And Classification

Primary CVSS: v3.1 5.5 MEDIUM from [email protected]

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

Problem Types: CWE-401

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

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

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Linux Linux Kernel All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected d855497edbfbf9e19a17f4a1154bca69cb4bd9ba da524c939b1e5ba17f10db4bde4bdaf569ffcda6 git Not specified
CNA Linux Linux affected d855497edbfbf9e19a17f4a1154bca69cb4bd9ba cf459d6ffa5e150ef3744b897f936ff24b52bd15 git Not specified
CNA Linux Linux affected d855497edbfbf9e19a17f4a1154bca69cb4bd9ba 77a63f8efc434ddb04667ed632aade58301a2f13 git Not specified
CNA Linux Linux affected d855497edbfbf9e19a17f4a1154bca69cb4bd9ba 4ba5c7a1aade7090172cbffd4d120bf4cf5ccbde git Not specified
CNA Linux Linux affected d855497edbfbf9e19a17f4a1154bca69cb4bd9ba 58dd722b6c3debcddb4684fb256c90fee7f063e5 git Not specified
CNA Linux Linux affected d855497edbfbf9e19a17f4a1154bca69cb4bd9ba 2011929f0e4cf6a0a34dd6205911b12276904453 git Not specified
CNA Linux Linux affected d855497edbfbf9e19a17f4a1154bca69cb4bd9ba 5f3ac816861c3b8a5d1a3645b17dc3a99d668d94 git Not specified
CNA Linux Linux affected d855497edbfbf9e19a17f4a1154bca69cb4bd9ba a8333c8262aed2aedf608c18edd39cf5342680a7 git Not specified
CNA Linux Linux affected 2.6.18 Not specified
CNA Linux Linux unaffected 2.6.18 semver Not specified
CNA Linux Linux unaffected 5.10.252 5.10.* semver Not specified
CNA Linux Linux unaffected 5.15.202 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.165 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.128 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.75 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.16 6.18.* semver Not specified
CNA Linux Linux unaffected 6.19.6 6.19.* semver Not specified
CNA Linux Linux unaffected 7.0 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/58dd722b6c3debcddb4684fb256c90fee7f063e5 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/4ba5c7a1aade7090172cbffd4d120bf4cf5ccbde 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/2011929f0e4cf6a0a34dd6205911b12276904453 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/a8333c8262aed2aedf608c18edd39cf5342680a7 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/77a63f8efc434ddb04667ed632aade58301a2f13 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/da524c939b1e5ba17f10db4bde4bdaf569ffcda6 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/5f3ac816861c3b8a5d1a3645b17dc3a99d668d94 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/cf459d6ffa5e150ef3744b897f936ff24b52bd15 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
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