CVE-2021-47258
scsi: core: Fix error handling of scsi_host_alloc()
- 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- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean?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
CISA's decision points: whether it is exploited, whether attacks can be automated, and how much control an attacker gets. Assessed (SSVC 2.0.3).What do these mean? →
- Exploitation: none
- Automatable: no
- Technical impact: partial
Summary
In the Linux kernel, the following vulnerability has been resolved: scsi: core: Fix error handling of scsi_host_alloc() After device is initialized via device_initialize(), or its name is set via dev_set_name(), the device has to be freed via put_device(). Otherwise device name will be leaked because it is allocated dynamically in dev_set_name(). Fix the leak by replacing kfree() with put_device(). Since scsi_host_dev_release() properly handles IDA and kthread removal, remove special-casing these from the error handling as well.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: partial
- Record last updated
Affected versions
- Linux Linux
Version range not reported
- Linux Linux
2.6.30
References 7
git.kernel.org
- stable/c/8958181c1663e24a13434448e7d6b96b5d04900a
- stable/c/db08ce595dd64ea9859f7d088b51cbfc8e685c66
- stable/c/2dc85045ae65b9302a1d2e2ddd7ce4c030153a6a
- stable/c/79296e292d67fa7b5fb8d8c27343683e823872c8
- stable/c/7a696ce1d5d16a33a6cd6400bbcc0339b2460e11
- stable/c/45d83db4728127944b237c0c8248987df9d478e7
- stable/c/66a834d092930cf41d809c0e989b13cd6f9ca006