CVE-2026-43223
Published: May 7, 2026Last modified: May 7, 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.
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 5.5 |
| Attack Vector | LOCAL |
| Attack complexity | LOW |
| Privileges required | LOW |
| User interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality | NONE |
| Integrity impact | NONE |
| Availability impact | HIGH |
| Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
Status
| Product | Release | Package | Status |
|---|---|---|---|
| Alpaquita Linux | 23 LTS | linux-lts | Fixed (6.1.167-r0) |
| 25 LTS | linux-lts | Fixed (6.12.80-r0) | |
| Stream | linux-lts | Fixed (6.12.76-r0) |
References
- 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
- https://git.kernel.org/stable/c/cf459d6ffa5e150ef3744b897f936ff24b52bd15
- https://git.kernel.org/stable/c/da524c939b1e5ba17f10db4bde4bdaf569ffcda6