Description (CNA)
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 (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected c07dc84ed67c5a182273171639bacbbb87c12175 before 4584229395d0d65bd517780afe97ffea07cb2c3d; affected 8072e34e1387d03102b788677d491e2bcceef6f5 before b81572b073441dfd32213e41857676d0dbff4665; affected 8072e34e1387d03102b788677d491e2bcceef6f5 before b48f44f36e6607b2f818560f19deb86b4a9c717b; affected 6.18.4 before 6.18.33 |
| Linux / Linux | affected 6.19; unaffected 0 before 6.19; unaffected 6.18.33 through 6.18.*; unaffected 7.0.10 through 7.0.*; unaffected 7.1 through * |
CWE
No CWE identifiers supplied.