Fix cupsd crash if user does not exist on server

zdohnal · zdohnal · commit 6d97ee39fedf · 2026-04-22T12:40:14.000+02:00
diff --git a/CHANGES.md b/CHANGES.md
@@ -2,6 +2,12 @@ CHANGES - OpenPrinting CUPS
 ===========================
 
 
+Changes in CUPS v2.4.18 (2026-04-22)
+------------------------------------
+
+- Fixed cupsd crash if user does not exist (Issue #1555)
+
+
 Changes in CUPS v2.4.17 (2026-04-17)
 ------------------------------------
 
diff --git a/scheduler/auth.c b/scheduler/auth.c
@@ -1835,7 +1835,7 @@ cupsdIsAuthorized(cupsd_client_t *con,	/* I - Connection */
 	 name;
 	 name = (char *)cupsArrayNext(best->names))
     {
-      if (!_cups_strcasecmp(name, "@OWNER") && owner &&
+      if (!_cups_strcasecmp(name, "@OWNER") && owner && pw &&
           !strcmp(pw->pw_name, ownername))
 	return (HTTP_OK);
       else if (!_cups_strcasecmp(name, "@SYSTEM"))

Original file line number	Diff line number	Diff line change
`@@ -1835,7 +1835,7 @@ cupsdIsAuthorized(cupsd_client_t con, / I - Connection */`
`1835`	`1835`	`name;`
`1836`	`1836`	`name = (char *)cupsArrayNext(best->names))`
`1837`	`1837`	`{`
`1838`		`- if (!_cups_strcasecmp(name, "@OWNER") && owner &&`
	`1838`	`+ if (!_cups_strcasecmp(name, "@OWNER") && owner && pw &&`
`1839`	`1839`	`!strcmp(pw->pw_name, ownername))`
`1840`	`1840`	`return (HTTP_OK);`
`1841`	`1841`	`else if (!_cups_strcasecmp(name, "@SYSTEM"))`