Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: nfsd: fix nfsd4_deleg_getattr_conflict in presence of third party lease It is not safe to dereference fl->c.flc_owner without first confirming fl->fl_lmops is the expected manager. nfsd4_deleg_getattr_conflict() tests fl_lmops but largely ignores the result and assumes that flc_owner is an nfs4_delegation anyway. This is wrong. With this patch we restore the "!= &nfsd_lease_mng_ops" case to behave as it did before the change mentioned below. This is the same as the current code, but without any reference to a possible delegation.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected c5967721e1063648b0506481585ba7e2e49a075e before 1b46a871e980e3daa16fd5e77539966492e8910a; affected c5967721e1063648b0506481585ba7e2e49a075e before 40927f3d0972bf86357a32a5749be71a551241b6 |
| Linux / Linux | affected 6.9; unaffected 0 before 6.9; unaffected 6.10.8 through 6.10.*; unaffected 6.11 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/1b46a871e980e3daa16fd5e77539966492e8910a
- https://git.kernel.org/stable/c/40927f3d0972bf86357a32a5749be71a551241b6
ADP enrichment
No English description supplied.
No references supplied.