45 lines
1.4 KiB
Diff
45 lines
1.4 KiB
Diff
From d6087e02d9f25bba362db0af16355ee3be4e450a Mon Sep 17 00:00:00 2001
|
|
From: Phil Sutter <psutter@redhat.com>
|
|
Date: Tue, 21 Feb 2023 19:50:40 +0100
|
|
Subject: [PATCH] owner: Fix potential array out of bounds access
|
|
|
|
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=2160049
|
|
Upstream Status: nftables commit 9967911e3dabb
|
|
|
|
commit 9967911e3dabb32901617e81e56602af3b37287f
|
|
Author: Pablo Neira Ayuso <pablo@netfilter.org>
|
|
Date: Wed Dec 21 17:37:46 2022 +0100
|
|
|
|
owner: Fix potential array out of bounds access
|
|
|
|
If the link target length exceeds 'sizeof(tmp)' bytes, readlink() will
|
|
return 'sizeof(tmp)'. Using this value as index is illegal.
|
|
|
|
Original update from Phil, for the conntrack-tools tree, which also has
|
|
a copy of this function.
|
|
|
|
Fixes: 6d085b22a8b5 ("table: support for the table owner flag")
|
|
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
|
|
|
|
Signed-off-by: Phil Sutter <psutter@redhat.com>
|
|
---
|
|
src/owner.c | 2 +-
|
|
1 file changed, 1 insertion(+), 1 deletion(-)
|
|
|
|
diff --git a/src/owner.c b/src/owner.c
|
|
index 2d98a2e..20bed38 100644
|
|
--- a/src/owner.c
|
|
+++ b/src/owner.c
|
|
@@ -66,7 +66,7 @@ static char *portid2name(pid_t pid, uint32_t portid, unsigned long inode)
|
|
continue;
|
|
|
|
rl = readlink(procname, tmp, sizeof(tmp));
|
|
- if (rl <= 0 || rl > (ssize_t)sizeof(tmp))
|
|
+ if (rl <= 0 || rl >= (ssize_t)sizeof(tmp))
|
|
continue;
|
|
|
|
tmp[rl] = 0;
|
|
--
|
|
2.39.2
|
|
|