CVE-2021-47198
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2021-47198
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-47198.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2021-47198
- Downstream
- Related
- Published
- 2024-04-10T19:15:47Z
- Modified
- 2025-08-09T20:01:27Z
- Severity
-
- 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
- Summary
- [none]
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
scsi: lpfc: Fix use-after-free in lpfcunregrpi() routine
An error is detected with the following report when unloading the driver: "KASAN: use-after-free in lpfcunregrpi+0x1b1b"
The NLPREGLOGINSEND nlpflag is set in lpfcregfabctrlnode(), but the flag is not cleared upon completion of the login.
This allows a second call to lpfcunregrpi() to proceed with nlprpi set to LPFCRPIALLOWERROR. This results in a use after free access when used as an rpi_ids array index.
Fix by clearing the NLPREGLOGINSEND nlpflag in lpfcmbxcmplfcreg_login().
- References