diff mbox series

resolv: Fix some unaligned accesses in resolver [BZ #30750]

Message ID ZOz8q+iXSpdwq25v@mx3210.localdomain
State New
Headers show
Series resolv: Fix some unaligned accesses in resolver [BZ #30750] | expand

Commit Message

John David Anglin Aug. 28, 2023, 7:59 p.m. UTC
Okay to install?

resolv: Fix some unaligned accesses in resolver [BZ #30750]

Signed-off-by: John David Anglin <dave.anglin@bell.net>
---

Comments

John David Anglin Sept. 12, 2023, 10:39 p.m. UTC | #1
Ping.

Dave

On 2023-08-28 3:59 p.m., John David Anglin wrote:
> Okay to install?
>
> resolv: Fix some unaligned accesses in resolver [BZ #30750]
>
> Signed-off-by: John David Anglin <dave.anglin@bell.net>
> ---
>
> diff --git a/resolv/res_nameinquery.c b/resolv/res_nameinquery.c
> index 24172700e1..ca56bc9283 100644
> --- a/resolv/res_nameinquery.c
> +++ b/resolv/res_nameinquery.c
> @@ -84,6 +84,7 @@
>   
>   #include <arpa/nameser.h>
>   #include <resolv.h>
> +#include <resolv/resolv-internal.h>
>   
>   /* Author: paul vixie, 29may94.  */
>   int
> @@ -91,7 +92,7 @@ __libc_res_nameinquery (const char *name, int type, int class,
>                           const unsigned char *buf, const unsigned char *eom)
>   {
>     const unsigned char *cp = buf + HFIXEDSZ;
> -  int qdcount = ntohs (((HEADER *) buf)->qdcount);
> +  int qdcount = ntohs (((UHEADER *) buf)->qdcount);
>   
>     while (qdcount-- > 0)
>       {
> diff --git a/resolv/res_queriesmatch.c b/resolv/res_queriesmatch.c
> index 13a6936c47..ba1c1d0c0c 100644
> --- a/resolv/res_queriesmatch.c
> +++ b/resolv/res_queriesmatch.c
> @@ -83,6 +83,7 @@
>    */
>   
>   #include <resolv.h>
> +#include <resolv/resolv-internal.h>
>   
>   /* Author: paul vixie, 29may94.  */
>   int
> @@ -102,7 +103,7 @@ __libc_res_queriesmatch (const unsigned char *buf1, const unsigned char *eom1,
>        order.  We can compare it with the second buffer's QDCOUNT
>        value without doing this.  */
>     int qdcount = ((HEADER *) buf1)->qdcount;
> -  if (qdcount != ((HEADER *) buf2)->qdcount)
> +  if (qdcount != ((UHEADER *) buf2)->qdcount)
>       return 0;
>   
>     qdcount = htons (qdcount);
Andreas Schwab Sept. 13, 2023, 6:28 a.m. UTC | #2
On Aug 28 2023, John David Anglin wrote:

> resolv: Fix some unaligned accesses in resolver [BZ #30750]

Ok.
diff mbox series

Patch

diff --git a/resolv/res_nameinquery.c b/resolv/res_nameinquery.c
index 24172700e1..ca56bc9283 100644
--- a/resolv/res_nameinquery.c
+++ b/resolv/res_nameinquery.c
@@ -84,6 +84,7 @@ 
 
 #include <arpa/nameser.h>
 #include <resolv.h>
+#include <resolv/resolv-internal.h>
 
 /* Author: paul vixie, 29may94.  */
 int
@@ -91,7 +92,7 @@  __libc_res_nameinquery (const char *name, int type, int class,
                         const unsigned char *buf, const unsigned char *eom)
 {
   const unsigned char *cp = buf + HFIXEDSZ;
-  int qdcount = ntohs (((HEADER *) buf)->qdcount);
+  int qdcount = ntohs (((UHEADER *) buf)->qdcount);
 
   while (qdcount-- > 0)
     {
diff --git a/resolv/res_queriesmatch.c b/resolv/res_queriesmatch.c
index 13a6936c47..ba1c1d0c0c 100644
--- a/resolv/res_queriesmatch.c
+++ b/resolv/res_queriesmatch.c
@@ -83,6 +83,7 @@ 
  */
 
 #include <resolv.h>
+#include <resolv/resolv-internal.h>
 
 /* Author: paul vixie, 29may94.  */
 int
@@ -102,7 +103,7 @@  __libc_res_queriesmatch (const unsigned char *buf1, const unsigned char *eom1,
      order.  We can compare it with the second buffer's QDCOUNT
      value without doing this.  */
   int qdcount = ((HEADER *) buf1)->qdcount;
-  if (qdcount != ((HEADER *) buf2)->qdcount)
+  if (qdcount != ((UHEADER *) buf2)->qdcount)
     return 0;
 
   qdcount = htons (qdcount);