Denial of Service Vulnerability in NFSv4 Implementation in Linux Kernel

CVE-2012-2375 · MEDIUM Severity

AV:A/AC:H/AU:N/C:N/I:N/A:C

The __nfs4_get_acl_uncached function in fs/nfs/nfs4proc.c in the NFSv4 implementation in the Linux kernel before 3.3.2 uses an incorrect length variable during a copy operation, which allows remote NFS servers to cause a denial of service (OOPS) by sending an excessive number of bitmap words in an FATTR4_ACL reply. NOTE: this vulnerability exists because of an incomplete fix for CVE-2011-4131.

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