阿里云漏洞库

CVE编号

CVE-2021-47198

利用情况

暂无

补丁情况

官方补丁

披露时间

2024-04-11

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().

建议您更新当前系统或软件至最新版，完成漏洞的修复。

参考链接
https://git.kernel.org/stable/c/79b20beccea3a3938a8500acef4e6b9d7c66142f
https://git.kernel.org/stable/c/dbebf865b3239595c1d4dba063b122862583b52a

CWE-ID	漏洞类型
CWE-416	释放后使用