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dix: NULL-protect AllocGlyphCursor()

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Return error to the client if sourcefont turns out to be NULL for
whatever reason.

Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
This commit is contained in:
Enrico Weigelt, metux IT consult
2025-05-07 12:53:08 +02:00
parent af71108cd3
commit 77502c6836
1 changed files with 1 additions and 1 deletions
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dix/cursor.c
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@@ -339,7 +339,7 @@ AllocGlyphCursor(Font source, unsigned sourceChar, Font mask, unsigned maskChar,
rc = dixLookupResourceByType((void **) &sourcefont, source, X11_RESTYPE_FONT,
client, DixUseAccess);
if (rc != Success) {
if ((rc != Success) || (!sourcefont)) {
client->errorValue = source;
return rc;
}