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gluon-radv-filterd: Fix use-after-free when best router expires

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Jan-Philipp Litza 2016-12-09 20:13:35 +01:00
parent 3667d6061d
commit e4457f2f68
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1 changed files with 2 additions and 0 deletions
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package/gluon-radv-filterd/src/gluon-radv-filterd.c
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@ -312,6 +312,8 @@ static void expire_routers() {
if (router->eol < now) { if (router->eol < now) {
DEBUG_MSG("router " F_MAC " expired", F_MAC_VAR(router->src)); DEBUG_MSG("router " F_MAC " expired", F_MAC_VAR(router->src));
*prev_ptr = router->next; *prev_ptr = router->next;
if (G.best_router == router)
G.best_router = NULL;
free(router); free(router);
} else { } else {
prev_ptr = &router->next; prev_ptr = &router->next;