diff options
| author | Mike Kaganski <mike.kaganski@collabora.com> | 2022-09-10 22:56:17 +0300 |
|---|---|---|
| committer | Mike Kaganski <mike.kaganski@collabora.com> | 2022-09-10 23:38:24 +0200 |
| commit | b31992ea518cec906a65ef971a637d0529302a2c (patch) | |
| tree | 096729c2c08b31c8dbd1a6b7a17edb5d3486bec9 /embeddedobj | |
| parent | b32c44f83ded245b0fc350aef350e1c55545e354 (diff) | |
tdf#119039: workaround an OleLoad bug releasing passed storage unexpectedly
See https://developercommunity.visualstudio.com/t/10144795
Change-Id: I75ee88c1dd50e0772c358967ac09b7788156d9f0
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/139756
Tested-by: Jenkins
Reviewed-by: Mike Kaganski <mike.kaganski@collabora.com>
Diffstat (limited to 'embeddedobj')
| -rw-r--r-- | embeddedobj/source/msole/olecomponent.cxx | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/embeddedobj/source/msole/olecomponent.cxx b/embeddedobj/source/msole/olecomponent.cxx index 1aec0c704926..f3111302355f 100644 --- a/embeddedobj/source/msole/olecomponent.cxx +++ b/embeddedobj/source/msole/olecomponent.cxx @@ -589,11 +589,24 @@ namespace HRESULT OleLoadSeh(LPSTORAGE pIStorage, LPVOID* ppObj) { HRESULT hr = E_FAIL; + // tdf#119039: there is a nasty bug in OleLoad, that may call an unpaired + // IUnknown::Release on pIStorage on STG_E_FILENOTFOUND: see + // https://developercommunity.visualstudio.com/t/10144795 + // Workaround it here to avoid crash in smart COM pointer destructor that + // would try to release already released object. Since we don't know if + // the bug appears each time STG_E_FILENOTFOUND is returned, this might + // potentially leak the storge object. + if (pIStorage) + pIStorage->AddRef(); + __try { hr = OleLoad(pIStorage, IID_IUnknown, nullptr, ppObj); } __except( EXCEPTION_EXECUTE_HANDLER ) { - return E_FAIL; + hr = E_FAIL; } + if (pIStorage && hr != STG_E_FILENOTFOUND) + pIStorage->Release(); + return hr; } } |