CVE-2026-43223
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.
脆弱性の種類
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.
影響を受ける製品
- linux linux_kernel
参考情報
- https://git.kernel.org/stable/c/2011929f0e4cf6a0a34dd6205911b12276904453
- https://git.kernel.org/stable/c/4ba5c7a1aade7090172cbffd4d120bf4cf5ccbde
- https://git.kernel.org/stable/c/58dd722b6c3debcddb4684fb256c90fee7f063e5
- https://git.kernel.org/stable/c/5f3ac816861c3b8a5d1a3645b17dc3a99d668d94
- https://git.kernel.org/stable/c/77a63f8efc434ddb04667ed632aade58301a2f13
- https://git.kernel.org/stable/c/a8333c8262aed2aedf608c18edd39cf5342680a7