CVEvulnerability

CVE-2021-47480

5.5 MEDIUM Published 2024-05-22 Modified 2026-06-17 Official page ↗
Status
Analyzed
Published
2024-05-22
Last modified
2026-06-17
Assigner
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS 3.1 ([email protected])
5.5 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Description

In the Linux kernel, the following vulnerability has been resolved: scsi: core: Put LLD module refcnt after SCSI device is released SCSI host release is triggered when SCSI device is freed. We have to make sure that the low-level device driver module won't be unloaded before SCSI host instance is released because shost->hostt is required in the release handler. Make sure to put LLD module refcnt after SCSI device is released. Fixes a kernel panic of 'BUG: unable to handle page fault for address' reported by Changhui and Yi.

Affected configurations

• linux linux kernel (< 4.4.292) • linux linux kernel (>= 4.5 < 4.9.290) • linux linux kernel (>= 4.10 < 4.14.255) • linux linux kernel (>= 4.15 < 4.19.216) • linux linux kernel (>= 4.20 < 5.4.158) • linux linux kernel (>= 5.5 < 5.10.78) • linux linux kernel (>= 5.11 < 5.14.17) • linux linux kernel 5.15

References