Vulnerability Information
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Vulnerability Title
nommu: pass NULL argument to vma_iter_prealloc()
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: nommu: pass NULL argument to vma_iter_prealloc() When deleting a vma entry from a maple tree, it has to pass NULL to vma_iter_prealloc() in order to calculate internal state of the tree, but it passed a wrong argument. As a result, nommu kernels crashed upon accessing a vma iterator, such as acct_collect() reading the size of vma entries after do_munmap(). This commit fixes this issue by passing a right argument to the preallocation call.
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nommu组件在删除vma条目时，错误地向vma_iter_prealloc传递参数，导致访问vma迭代器时nommu内核崩溃。
CVSS Information
N/A
Vulnerability Type
N/A