From: Karel Zak <kzak@redhat.com>
Date: Tue, 27 Jul 2021 09:58:31 +0000 (+0200)
Subject: sys-utils/ipcutils: be careful when call calloc() for uint64 nmembs
X-Git-Tag: v2.38-rc1~356
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1c9143d0c1f979c3daf10e1c37b5b1e916c22a1c;p=thirdparty%2Futil-linux.git

sys-utils/ipcutils: be careful when call calloc() for uint64 nmembs

Fix: https://github.com/karelzak/util-linux/issues/1395
Signed-off-by: Karel Zak <kzak@redhat.com>
---

diff --git a/sys-utils/ipcutils.c b/sys-utils/ipcutils.c
index e784c4dcb9..18868cfd38 100644
--- a/sys-utils/ipcutils.c
+++ b/sys-utils/ipcutils.c
@@ -218,7 +218,7 @@ static void get_sem_elements(struct sem_data *p)
 {
 	size_t i;
 
-	if (!p || !p->sem_nsems || p->sem_perm.id < 0)
+	if (!p || !p->sem_nsems || p->sem_nsems > SIZE_MAX || p->sem_perm.id < 0)
 		return;
 
 	p->elements = xcalloc(p->sem_nsems, sizeof(struct sem_elem));