usb: gadget: net2280: Fix double free in probe error path
- 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- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean?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: usb: gadget: net2280: Fix double free in probe error path usb_initialize_gadget() installs gadget_release() as the release callback for the embedded gadget device. The struct net2280 instance is therefore released through gadget_release() when the gadget device's last reference is dropped. The probe error path calls net2280_remove(), which tears down the partially initialized device and drops the gadget reference with usb_put_gadget(). Calling kfree(dev) afterwards can free the same object again. Drop the explicit kfree() and let the gadget device release callback handle the final free. This issue was found by a static analysis tool I am developing.
Timeline
- CVE published
Affected versions
- Linux Linux
Version range not reported
- Linux Linux
5.10
References 8
git.kernel.org
- stable/c/71b3391dc81655ff058492f8e9d013b2c6e5747b
- stable/c/550fa4d071a8c8e53072900869d37ae6abf4999d
- stable/c/c5b9fdb1e8ddf50bc6272927edb118679f170350
- stable/c/085652fda7f38040d1a2c42d72614f418feb843f
- stable/c/48f89ead20e48d447ad29fa937b43b9fa981cf28
- stable/c/e6f8be12f0307145b9a6010f044925952b37de8b
- stable/c/db2b72e83a0208ae2b3b270bf91662b1c6849a9b
- stable/c/c8547c74988e0b5f4cbb1b895e2a57aae084f070