diff options
Diffstat (limited to 'meta/recipes-support/libnl/libnl/0001-fix-double-free-caused-by-freeing-link-af_data-in-rt.patch')
| -rw-r--r-- | meta/recipes-support/libnl/libnl/0001-fix-double-free-caused-by-freeing-link-af_data-in-rt.patch | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/meta/recipes-support/libnl/libnl/0001-fix-double-free-caused-by-freeing-link-af_data-in-rt.patch b/meta/recipes-support/libnl/libnl/0001-fix-double-free-caused-by-freeing-link-af_data-in-rt.patch new file mode 100644 index 0000000000..6d2c8ff72d --- /dev/null +++ b/meta/recipes-support/libnl/libnl/0001-fix-double-free-caused-by-freeing-link-af_data-in-rt.patch @@ -0,0 +1,41 @@ +From 6f37b439af7e96104aadd8ec3ae8d3882df8d102 Mon Sep 17 00:00:00 2001 +From: Jiri Pirko <jiri@resnulli.us> +Date: Wed, 21 Aug 2013 14:40:34 +0200 +Subject: [PATCH] fix double free caused by freeing link af_data in + rtnl_link_set_family() + +Introduced by commit 8026fe2e3a9089eff3f5a06ee6e3cc78d96334ed ("link: +Free and realloc af specific data upon rtnl_link_set_family()") + +link->l_af_data[link->l_af_ops->ao_family] is freed here but not set to +zero. That leads to double free made by link_free_data->do_foreach_af. + +Fix this by setting link->l_af_data[link->l_af_ops->ao_family] to zero +rigth after free. + +Signed-off-by: Jiri Pirko <jiri@resnulli.us> +Signed-off-by: Thomas Graf <tgraf@suug.ch> +--- + lib/route/link.c | 4 +++- + 1 file changed, 3 insertions(+), 1 deletion(-) + +diff --git a/lib/route/link.c b/lib/route/link.c +index a73e1db..0bb90a0 100644 +--- a/lib/route/link.c ++++ b/lib/route/link.c +@@ -1762,9 +1762,11 @@ void rtnl_link_set_family(struct rtnl_link *link, int family) + link->l_family = family; + link->ce_mask |= LINK_ATTR_FAMILY; + +- if (link->l_af_ops) ++ if (link->l_af_ops) { + af_free(link, link->l_af_ops, + link->l_af_data[link->l_af_ops->ao_family], NULL); ++ link->l_af_data[link->l_af_ops->ao_family] = NULL; ++ } + + link->l_af_ops = af_lookup_and_alloc(link, family); + } +-- +1.8.4 + |