Vulnerability Information
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Vulnerability Title
dmaengine: at_xdmac: avoid null_prt_deref in at_xdmac_prep_dma_memset
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: dmaengine: at_xdmac: avoid null_prt_deref in at_xdmac_prep_dma_memset The at_xdmac_memset_create_desc may return NULL, which will lead to a null pointer dereference. For example, the len input is error, or the atchan->free_descs_list is empty and memory is exhausted. Therefore, add check to avoid this.
CVSS Information
N/A
Vulnerability Type
N/A
Vulnerability Title
Linux kernel 安全漏洞
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于在dmaengine模块的at_xdmac驱动中，at_xdmac_memset_create_desc函数可能返回NULL，例如输入的len值错误或atchan->free_descs_list为空且内存耗尽时，若未进行检查，将导致空指针引用错误，影响DMA操作的正常进行。
CVSS Information
N/A
Vulnerability Type
N/A