Description
In the Linux kernel, the following vulnerability has been resolved: NFSD: fix nfs4_file access extra count in nfsd4_add_rdaccess_to_wrdeleg In nfsd4_add_rdaccess_to_wrdeleg, if fp->fi_fds[O_RDONLY] is already set by another thread, __nfs4_file_get_access should not be called to increment the nfs4_file access count since that was already done by the thread that added READ access to the file. The extra fi_access count in nfs4_file can prevent the corresponding nfsd_file from being freed. When stopping nfs-server service, these extra access counts trigger a BUG in kmem_cache_destroy() that shows nfsd_file object remaining on __kmem_cache_shutdown. This problem can be reproduced by running the Git project's test suite over NFS.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
c07dc84ed67c5a182273171639bacbbb87c12175 to < 4584229395d0d65bd517780afe97ffea07cb2c3daffected8072e34e1387d03102b788677d491e2bcceef6f5 to < b81572b073441dfd32213e41857676d0dbff4665affected8072e34e1387d03102b788677d491e2bcceef6f5 to < b48f44f36e6607b2f818560f19deb86b4a9c717baffected6.18.4 to < 6.18.33affected
Linux Linux
Default version status: affected
6.19affected0 to < 6.19unaffected6.18.33 to ≤ 6.18.*unaffected7.0.10 to ≤ 7.0.*unaffected7.1 to ≤ *unaffected