hwmon: (corsair-cpro) Remove debugfs entries when probe fails
- 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- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean?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
- Fix
- Fixed in 6.12.111, 6.18.53, 7.2.7
- 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: hwmon: (corsair-cpro) Remove debugfs entries when probe fails ccp_debugfs_init() registers debugfs files whose private data is the devm allocated ccp. If hwmon_device_register_with_info() fails right after it, ccp_probe() returns without removing them: the HID core then frees ccp, and ccp_remove() is not called for a failed probe, so the files stay behind. Reading one of them dereferences the freed pointer. Remove the debugfs entries on that error path. debugfs_remove_recursive() waits for readers already inside the show callbacks, so ccp is no longer reachable through debugfs by the time probe returns.
Timeline
- CVE published
- Record last updated
Affected versions
- Linux Linux
From 5997eb60f896830126bc1783465b678b110e2fdd · fixed in ae01aafd8214e48cb7eff11e92dfbf3778d52d9d; From 5997eb60f896830126bc1783465b678b110e2fdd · fixed in a5de53b08cc319dadce6fb68d33749ea37962952; From 5997eb60f896830126bc1783465b678b110e2fdd · fixed in fdc1bc23ff59ee308042342cefcb918d6efba409; From 5997eb60f896830126bc1783465b678b110e2fdd · fixed in 4ee875c423c66c45d7ef7bbff403cd0e3971e0a2
- Linux Linux
6.11
- KernelLinux
From 6.11.0 · fixed in 6.12.111; From 6.13.0 · fixed in 6.18.53; From 6.19.0 · fixed in 7.2.7