All of lore.kernel.org
 help / color / mirror / Atom feed
From: Heinrich Schuchardt <xypron.glpk@gmx.de>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH 1/1] efi_loader: memory leak in append value
Date: Tue, 30 Apr 2019 07:37:11 +0200	[thread overview]
Message-ID: <20190430053711.17882-1-xypron.glpk@gmx.de> (raw)

When printing an UEFI variable an error may arise while converting an
illegal hexadecimal value. In this case a buffer is leaked.

Close the memory leak. Provide an error message.

Reported-by: Coverity (CID 185830)
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
---
 cmd/nvedit_efi.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/cmd/nvedit_efi.c b/cmd/nvedit_efi.c
index e65b38dbf3..2805e8182b 100644
--- a/cmd/nvedit_efi.c
+++ b/cmd/nvedit_efi.c
@@ -291,8 +291,11 @@ static int append_value(char **bufp, size_t *sizep, char *data)
 		if (!tmp_buf)
 			return -1;

-		if (hex2bin((u8 *)tmp_buf, data, len) < 0)
+		if (hex2bin((u8 *)tmp_buf, data, len) < 0) {
+			printf("Error: illegal hexadecimal string\n");
+			free(tmp_buf);
 			return -1;
+		}

 		value = tmp_buf;
 	} else { /* string */
--
2.20.1

                 reply	other threads:[~2019-04-30  5:37 UTC|newest]

Thread overview: [no followups] expand[flat|nested]  mbox.gz  Atom feed

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20190430053711.17882-1-xypron.glpk@gmx.de \
    --to=xypron.glpk@gmx.de \
    --cc=u-boot@lists.denx.de \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.