From: Seung-Woo Kim <sw0312.kim@samsung.com>
Date: Tue, 13 Apr 2021 11:23:14 +0000 (+0900)
Subject: libkmod: fix an overflow with wrong modules.builtin.modinfo
X-Git-Tag: accepted/tizen/unified/20210528.134723~2
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=6192674bed14c2f3aa307b8761377f322dc76c29;p=platform%2Fupstream%2Fkmod.git

libkmod: fix an overflow with wrong modules.builtin.modinfo

Fix a possbile overflow with exact PATH_MAX length modname
in wrong modules.builtin.modinfo.

Signed-off-by: Seung-Woo Kim <sw0312.kim@samsung.com>

[sw0312.kim: cherry-pick mainline commit 1cab02ecf6ee]

Change-Id: I609585cc97d8abb30541b37d3dee0eda66029162
---

diff --git a/libkmod/libkmod-builtin.c b/libkmod/libkmod-builtin.c
index fc9a376..a75a542 100644
--- a/libkmod/libkmod-builtin.c
+++ b/libkmod/libkmod-builtin.c
@@ -246,7 +246,7 @@ bool kmod_builtin_iter_get_modname(struct kmod_builtin_iter *iter,
 
 	len = dot - line;
 
-	if (len > PATH_MAX) {
+	if (len >= PATH_MAX) {
 		sv_errno = ENAMETOOLONG;
 		goto fail;
 	}