From: Anton Moryakov <ant.v.moryakov@gmail.com>
To: chengzhihao1@huawei.com, linux-mtd@lists.infradead.org
Cc: Anton Moryakov <ant.v.moryakov@gmail.com>
Subject: [PATCH mtd-utils] ubi-utils: Fix integer overflow in mtdinfo.c
Date: Thu, 12 Dec 2024 20:13:58 +0300 [thread overview]
Message-ID: <20241212171358.53333-1-ant.v.moryakov@gmail.com> (raw)
Report of the static analyzer:
The value of an arithmetic expression 'reginfo->offset + i * reginfo->erasesize' is a subject to overflow
because its operands are not cast to a larger data type before performing arithmetic
Corrections explained:
Added casting reginfo->offset to long long
Triggers found by static analyzer Svace.
Signed-off-by: Anton Moryakov <ant.v.moryakov@gmail.com>
---
ubi-utils/mtdinfo.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/ubi-utils/mtdinfo.c b/ubi-utils/mtdinfo.c
index 7dff0de..850297b 100644
--- a/ubi-utils/mtdinfo.c
+++ b/ubi-utils/mtdinfo.c
@@ -203,7 +203,7 @@ static void print_region_map(const struct mtd_dev_info *mtd, int fd,
ret_locked = ret_bad = errno_locked = errno_bad = 0;
for (i = 0; i < reginfo->numblocks; ++i) {
- start = reginfo->offset + i * reginfo->erasesize;
+ start = (long long)reginfo->offset + i * reginfo->erasesize;
printf(" %*i: %08lx ", width, i, start);
if (ret_locked != -1) {
--
2.30.2
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next reply other threads:[~2024-12-12 17:37 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-12-12 17:13 Anton Moryakov [this message]
2024-12-13 2:29 ` [PATCH mtd-utils] ubi-utils: Fix integer overflow in mtdinfo.c Zhihao Cheng
-- strict thread matches above, loose matches on Subject: below --
2024-12-12 17:29 Anton Moryakov
2024-12-13 13:15 Anton Moryakov
2024-12-14 2:56 ` Zhihao Cheng
2024-12-14 10:51 Anton Moryakov
2024-12-14 12:19 ` Zhihao Cheng
2024-12-14 12:31 Anton Moryakov
2024-12-16 1:08 ` Zhihao Cheng
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