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systemd
0004-util-refuse-considering-UID-0xFFFF-and-0xF...
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File 0004-util-refuse-considering-UID-0xFFFF-and-0xFFFFFFFF-va.patch of Package systemd
From 306a55c86360a7ae7b2509771d5ea6ab0d166d85 Mon Sep 17 00:00:00 2001 From: Lennart Poettering <lennart@poettering.net> Date: Sun, 29 Jun 2014 22:15:33 +0200 Subject: [PATCH] util: refuse considering UID 0xFFFF and 0xFFFFFFFF valid --- src/shared/util.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git src/shared/util.c src/shared/util.c index e7ff0f8..1709bb7 100644 --- src/shared/util.c +++ src/shared/util.c @@ -280,6 +280,14 @@ int parse_uid(const char *s, uid_t* ret_uid) { if ((unsigned long) uid != ul) return -ERANGE; + /* Some libc APIs use (uid_t) -1 as special placeholder */ + if (uid == (uid_t) 0xFFFFFFFF) + return -EINVAL; + + /* A long time ago UIDs where 16bit, hence explicitly avoid the 16bit -1 too */ + if (uid == (uid_t) 0xFFFF) + return -EINVAL; + *ret_uid = uid; return 0; } -- 1.7.9.2
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