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bind: Security fix CVE-2015-8461
CVE-2015-8461 bind: race condition when handling socket errors can lead to an assertion failure in resolver.c\ (From OE-Core master rev: 1656eaa722952861ec73362776bd0c4826aec3da) Hand applied Changelog changes. (From OE-Core rev: 104d050d420ee4aa14b772850742699b15d127d6) Signed-off-by: Armin Kuster <akuster@mvista.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org> Signed-off-by: Armin Kuster <akuster@mvista.com> Signed-off-by: Joshua Lock <joshua.g.lock@intel.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
committed by
Richard Purdie
parent
d4b6c1657b
commit
12cdd6d2b3
@@ -0,0 +1,45 @@
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From adbf81335b67be0cebdcf9f1f4fcb38ef4814f4d Mon Sep 17 00:00:00 2001
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From: Mark Andrews <marka@isc.org>
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Date: Thu, 25 Jun 2015 18:36:27 +1000
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Subject: [PATCH] 4146. [bug] Address reference leak that could
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prevent a clean shutdown. [RT #37125]
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Upstream-Status: Backport
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https://source.isc.org/cgi-bin/gitweb.cgi?p=bind9.git;a=commit;h=adbf81335b67be0cebdcf9f1f4fcb38ef4814f4d
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CVE: CVE-2015-8461
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Signed-off-by: Armin Kuster <akuster@mvista.com>
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---
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CHANGES | 3 +++
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lib/dns/resolver.c | 5 +++++
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2 files changed, 8 insertions(+)
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Index: bind-9.9.5/lib/dns/resolver.c
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===================================================================
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--- bind-9.9.5.orig/lib/dns/resolver.c
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+++ bind-9.9.5/lib/dns/resolver.c
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@@ -1570,6 +1570,11 @@ fctx_query(fetchctx_t *fctx, dns_adbaddr
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if (query->dispatch != NULL)
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dns_dispatch_detach(&query->dispatch);
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+ LOCK(&res->buckets[fctx->bucketnum].lock);
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+ INSIST(fctx->references > 1);
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+ fctx->references--;
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+ UNLOCK(&res->buckets[fctx->bucketnum].lock);
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+
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cleanup_query:
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if (query->connects == 0) {
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query->magic = 0;
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Index: bind-9.9.5/CHANGES
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===================================================================
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--- bind-9.9.5.orig/CHANGES
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+++ bind-9.9.5/CHANGES
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@@ -1,4 +1,7 @@
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--- 9.9.6-P2 released ---
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+4146. [bug] Address reference leak that could prevent a clean
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+ shutdown. [RT #37125]
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+
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4053. [security] Revoking a managed trust anchor and supplying
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an untrusted replacement could cause named
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@@ -27,7 +27,8 @@ SRC_URI = "ftp://ftp.isc.org/isc/bind9/${PV}/${BPN}-${PV}.tar.gz \
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file://CVE-2015-5722.patch \
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file://CVE-2015-5722.patch \
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file://CVE-2015-8000.patch \
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file://CVE-2015-8000.patch \
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file://CVE-2015-8704.patch \
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file://CVE-2015-8704.patch \
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"
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file://CVE-2015-8461.patch \
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"
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SRC_URI[md5sum] = "e676c65cad5234617ee22f48e328c24e"
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SRC_URI[md5sum] = "e676c65cad5234617ee22f48e328c24e"
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SRC_URI[sha256sum] = "d4b64c1dde442145a316679acff2df4008aa117ae52dfa3a6bc69efecc7840d1"
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SRC_URI[sha256sum] = "d4b64c1dde442145a316679acff2df4008aa117ae52dfa3a6bc69efecc7840d1"
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