CVE-2026-43223
media: pvrusb2: fix URB leak in pvr2_send_request_ex
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
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.
Timeline
- CVE published
- Record last updated
Affected versions
- Linux Linux
Version range not reported
- Linux Linux
2.6.18
References 8
git.kernel.org
- stable/c/da524c939b1e5ba17f10db4bde4bdaf569ffcda6
- stable/c/cf459d6ffa5e150ef3744b897f936ff24b52bd15
- stable/c/77a63f8efc434ddb04667ed632aade58301a2f13
- stable/c/4ba5c7a1aade7090172cbffd4d120bf4cf5ccbde
- stable/c/58dd722b6c3debcddb4684fb256c90fee7f063e5
- stable/c/2011929f0e4cf6a0a34dd6205911b12276904453
- stable/c/5f3ac816861c3b8a5d1a3645b17dc3a99d668d94
- stable/c/a8333c8262aed2aedf608c18edd39cf5342680a7