The ovl_setattr function in fs/overlayfs/inode.c in the Linux kernel
through 4.3.3 attempts to merge distinct setattr operations, which
allows local users to bypass intended access restrictions and modify
the attributes of arbitrary overlay files via a crafted application.
Note:References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MLIST:[oss-security] 20151223 CVE request -- linux kernel: overlay: fix permission checking for setattr
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