In the Linux kernel, the following vulnerability has been resolved: f2fs: fix infinite loop in __insert_extent_tree() When we get wrong extent info data, and look up extent_node in rb tree, it will cause infinite loop (CONFIG_F2FS_CHECK_FS=n). Avoiding this by return NULL and print some kernel messages in that case.
https://git.kernel.org/stable/c/f4c31adcb2a0556f43776d4e51a67de88d7fb9ee
https://git.kernel.org/stable/c/c0b9951bb2668d67eb4817bb23fc109abc08c075
https://git.kernel.org/stable/c/765f8816d3959ef1f3f7f85e2af748594d091f40
https://git.kernel.org/stable/c/23361bd54966b437e1ed3eb1a704572f4b279e58