From 765757c6301fa41c0b59108347c600fbc9020c39 Mon Sep 17 00:00:00 2001 From: Mariusz Zaborski Date: Mon, 23 Oct 2023 23:03:51 +0200 Subject: [PATCH] cap_net: correct capability name from addr2name to name2addr Previously, while checking name2addr capabilities, we mistakenly used the addr2name set. This error could cause a process to inadvertently reset its limitations. Reported by: Shawn Webb (cherry picked from commit afd74c400075d94e01dd3430844bb290834660ef) --- lib/libcasper/services/cap_net/cap_net.c | 2 +- lib/libcasper/services/cap_net/tests/net_test.c | 12 ++++++++++++ 2 files changed, 13 insertions(+), 1 deletion(-) diff --git a/lib/libcasper/services/cap_net/cap_net.c b/lib/libcasper/services/cap_net/cap_net.c index bbb2a666440..a8f039f8184 100644 --- a/lib/libcasper/services/cap_net/cap_net.c +++ b/lib/libcasper/services/cap_net/cap_net.c @@ -1232,7 +1232,7 @@ verify_name2addr_newlimits(const nvlist_t *oldlimits, oldfunclimits = NULL; if (oldlimits != NULL) { oldfunclimits = dnvlist_get_nvlist(oldlimits, - LIMIT_NV_ADDR2NAME, NULL); + LIMIT_NV_NAME2ADDR, NULL); } cookie = NULL; diff --git a/lib/libcasper/services/cap_net/tests/net_test.c b/lib/libcasper/services/cap_net/tests/net_test.c index 5522f92516e..dcb897de467 100644 --- a/lib/libcasper/services/cap_net/tests/net_test.c +++ b/lib/libcasper/services/cap_net/tests/net_test.c @@ -783,6 +783,18 @@ ATF_TC_BODY(capnet__limits_name2addr_hosts, tc) limit = cap_net_limit_init(capnet, CAPNET_NAME2ADDR); ATF_REQUIRE(cap_net_limit(limit) != 0); + /* Try to extend the limit. */ + limit = cap_net_limit_init(capnet, CAPNET_NAME2ADDR); + ATF_REQUIRE(limit != NULL); + cap_net_limit_name2addr(limit, TEST_DOMAIN_1, NULL); + ATF_REQUIRE(cap_net_limit(limit) != 0); + + limit = cap_net_limit_init(capnet, CAPNET_NAME2ADDR); + ATF_REQUIRE(limit != NULL); + cap_net_limit_name2addr(limit, TEST_DOMAIN_0, NULL); + cap_net_limit_name2addr(limit, TEST_DOMAIN_1, NULL); + ATF_REQUIRE(cap_net_limit(limit) != 0); + cap_close(capnet); }