CVE-2021-47179 (GCVE-0-2021-47179)
Vulnerability from cvelistv5
Published
2024-03-25 09:16
Modified
2026-05-23 15:19
Severity ?
Summary
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 call pnfs_mark_matching_lsegs_return() passing NULL as the struct pnfs_layout_range argument. Unfortunately, pnfs_mark_matching_lsegs_return() doesn't check if we have a value here before dereferencing it, causing an oops. I'm able to hit this crash consistently when running connectathon basic tests on NFS v4.1/v4.2 against Ontap.
References
Impacted products
Vendor Product Version
Linux Linux Version: 80e34f4957ec3010c85f9bb0b568a8d46acdf535
Version: 7b7b9774643220e53eef58c15bb29bd4182fe053
Version: 9ffa7967f9379a0a1b924e9ffeda709d72237da7
Version: 6be0e4b59314e4a836495f6ffdc5d2c5b079deeb
Version: 2fafe7d5047f98791afd9a1d90d2afb70debc590
Version: 7e65ea887d0c0997f3053acd91a027af45e71c5b
Version: de144ff4234f935bd2150108019b5d87a90a8a96
Version: 96260bde1ea8ae31a5402fe506abbb8951d5a42c
Version: 5.11.20   ≤
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   Linux Linux Version: 4.9.269   ≤
Version: 4.14.233   ≤
Version: 4.19.191   ≤
Version: 5.4.118   ≤
Version: 5.10.36   ≤
Version: 5.12.3   ≤
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