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3251. [bug] Enforce a upper bound (65535 bytes) on the amount of

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memory dns_sdlz_putrr() can allocate per record to
                        prevent run away memory consumption on ISC_R_NOSPACE.
                        [RT #26956]
This commit is contained in:
Mark Andrews
2011-12-22 07:18:45 +00:00
parent 01a48682de
commit eeda4faf0d
2 changed files with 10 additions and 1 deletions
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5
CHANGES
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@@ -1,3 +1,8 @@
3251. [bug] Enforce a upper bound (65535 bytes) on the amount of
memory dns_sdlz_putrr() can allocate per record to
prevent run away memory consumption on ISC_R_NOSPACE.
[RT #26956]
3250. [func] 'configure --enable-developer'; turn on various
configure options, normally off by default, that
we want developers to build and test with. [RT #27103]

6
lib/dns/sdlz.c
View File

@@ -50,7 +50,7 @@
* USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/* $Id: sdlz.c,v 1.18.50.8 2011/03/12 04:57:27 tbox Exp $ */
/* $Id: sdlz.c,v 1.18.50.9 2011/12/22 07:18:45 marka Exp $ */
/*! \file */
@@ -1569,7 +1569,11 @@ dns_sdlz_putrr(dns_sdlzlookup_t *lookup, const char *type, dns_ttl_t ttl,
&lookup->callbacks);
if (result != ISC_R_SUCCESS)
isc_buffer_free(&rdatabuf);
if (size >= 65535)
break;
size *= 2;
if (size >= 65535)
size = 65535;
} while (result == ISC_R_NOSPACE);
if (result != ISC_R_SUCCESS)