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afs: Fix check for NULL terminator

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Add a missing check for reaching the end of the string while attempting
to split a command.

Fixes: f94f70d39c ("afs: Provide a way to configure address priorities")
Reported-by: syzbot+7741f872f3c53385a2e2@syzkaller.appspotmail.com
Closes: https://syzkaller.appspot.com/bug?extid=7741f872f3c53385a2e2
Signed-off-by: Leo Stone <leocstone@gmail.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Link: https://lore.kernel.org/4119428.1753108152@warthog.procyon.org.uk
Acked-by: David Howells <dhowells@redhat.com>
cc: Marc Dionne <marc.dionne@auristor.com>
cc: linux-afs@lists.infradead.org
cc: linux-fsdevel@vger.kernel.org
Signed-off-by: Christian Brauner <brauner@kernel.org>
This commit is contained in:
Leo Stone
2025-07-21 15:29:12 +01:00
committed by Christian Brauner
parent 89be9a83cc
commit 9aa6418295
1 changed files with 1 additions and 1 deletions
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2
fs/afs/addr_prefs.c
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@@ -48,7 +48,7 @@ static int afs_split_string(char **pbuf, char *strv[], unsigned int maxstrv)
strv[count++] = p;
/* Skip over word */
while (!isspace(*p))
while (!isspace(*p) && *p)
p++;
if (!*p)
break;