ID |
CVE-2021-47198
|
Sažetak |
In the Linux kernel, the following vulnerability has been resolved:
scsi: lpfc: Fix use-after-free in lpfc_unreg_rpi() routine
An error is detected with the following report when unloading the driver:
"KASAN: use-after-free in lpfc_unreg_rpi+0x1b1b"
The NLP_REG_LOGIN_SEND nlp_flag is set in lpfc_reg_fab_ctrl_node(), but the
flag is not cleared upon completion of the login.
This allows a second call to lpfc_unreg_rpi() to proceed with nlp_rpi set
to LPFC_RPI_ALLOW_ERROR. This results in a use after free access when used
as an rpi_ids array index.
Fix by clearing the NLP_REG_LOGIN_SEND nlp_flag in
lpfc_mbx_cmpl_fc_reg_login(). |
Reference |
|
CVSS |
Base: | 7.8 |
Impact: | 5.9 |
Exploitability: | 1.8 |
|
Pristup |
Vektor | Složenost | Autentikacija |
LOCAL |
LOW |
LOW |
|
Impact |
Povjerljivost | Cjelovitost | Dostupnost |
HIGH |
HIGH |
HIGH |
|
CVSS vektor |
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Zadnje važnije ažuriranje |
19-04-2024 - 19:15 |
Objavljeno |
10-04-2024 - 19:15 |