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2.4 KiB
2.4 KiB
CVE-2021-47179
Description
In the Linux kernel, the following vulnerability has been resolved:NFSv4: Fix a NULL pointer dereference in pnfs_mark_matching_lsegs_return()Commit de144ff4234f changes _pnfs_return_layout() to callpnfs_mark_matching_lsegs_return() passing NULL as the structpnfs_layout_range argument. Unfortunately,pnfs_mark_matching_lsegs_return() doesn't check if we have a value herebefore dereferencing it, causing an oops.I'm able to hit this crash consistently when running connectathon basictests on NFS v4.1/v4.2 against Ontap.
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