StdLib/LibC/Uefi/Devices/Utility/Path.c | 1 + 1 file changed, 1 insertion(+)
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=38
Set MPath to NULL after free(MPath) to guarantee that MPath
is not used after the free() call.
Cc: Rebecca Cran <rebecca@nuviainc.com>
Signed-off-by: Michael D Kinney <michael.d.kinney@intel.com>
---
StdLib/LibC/Uefi/Devices/Utility/Path.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/StdLib/LibC/Uefi/Devices/Utility/Path.c b/StdLib/LibC/Uefi/Devices/Utility/Path.c
index d6728d3..fe19196 100644
--- a/StdLib/LibC/Uefi/Devices/Utility/Path.c
+++ b/StdLib/LibC/Uefi/Devices/Utility/Path.c
@@ -359,6 +359,7 @@ reclassify:
}
else if(MPath != NULL) {
free(MPath); /* Caller doesn't want it so let MPath go free */
+ MPath = NULL;
}
/* At this point, WPath is an absolute path,
--
2.32.0.windows.1
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Reviewed-by: Rebecca Cran <rebecca@nuviainc.com> -- Rebecca Cran On 8/18/21 5:45 PM, Michael D Kinney wrote: > REF: https://bugzilla.tianocore.org/show_bug.cgi?id=38 > > Set MPath to NULL after free(MPath) to guarantee that MPath > is not used after the free() call. > > Cc: Rebecca Cran <rebecca@nuviainc.com> > Signed-off-by: Michael D Kinney <michael.d.kinney@intel.com> > --- > StdLib/LibC/Uefi/Devices/Utility/Path.c | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/StdLib/LibC/Uefi/Devices/Utility/Path.c b/StdLib/LibC/Uefi/Devices/Utility/Path.c > index d6728d3..fe19196 100644 > --- a/StdLib/LibC/Uefi/Devices/Utility/Path.c > +++ b/StdLib/LibC/Uefi/Devices/Utility/Path.c > @@ -359,6 +359,7 @@ reclassify: > } > else if(MPath != NULL) { > free(MPath); /* Caller doesn't want it so let MPath go free */ > + MPath = NULL; > } > > /* At this point, WPath is an absolute path, -=-=-=-=-=-=-=-=-=-=-=- Groups.io Links: You receive all messages sent to this group. View/Reply Online (#79547): https://edk2.groups.io/g/devel/message/79547 Mute This Topic: https://groups.io/mt/84985779/1787277 Group Owner: devel+owner@edk2.groups.io Unsubscribe: https://edk2.groups.io/g/devel/unsub [importer@patchew.org] -=-=-=-=-=-=-=-=-=-=-=-
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