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| author | Henrique Carvalho <henrique.carvalho@suse.com> | 2025-11-03 19:52:55 -0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-11-13 15:37:46 -0500 |
| commit | bdb596ceb4b7c3f28786a33840263728217fbcf5 (patch) | |
| tree | 6dde929be49b3f3f6bbe69edbe8668ec9b2e0802 /tools/perf/scripts/python/stackcollapse.py | |
| parent | 826ce37a842633efe1bb763e4b13045d74060d72 (diff) | |
smb: client: fix potential UAF in smb2_close_cached_fid()
commit 734e99623c5b65bf2c03e35978a0b980ebc3c2f8 upstream.
find_or_create_cached_dir() could grab a new reference after kref_put()
had seen the refcount drop to zero but before cfid_list_lock is acquired
in smb2_close_cached_fid(), leading to use-after-free.
Switch to kref_put_lock() so cfid_release() is called with
cfid_list_lock held, closing that gap.
Fixes: ebe98f1447bb ("cifs: enable caching of directories for which a lease is held")
Cc: stable@vger.kernel.org
Reported-by: Jay Shin <jaeshin@redhat.com>
Reviewed-by: Paulo Alcantara (Red Hat) <pc@manguebit.org>
Signed-off-by: Henrique Carvalho <henrique.carvalho@suse.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'tools/perf/scripts/python/stackcollapse.py')
0 files changed, 0 insertions, 0 deletions