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-rw-r--r--gnu/packages/patches/polkit-CVE-2021-3560.patch21
1 files changed, 21 insertions, 0 deletions
diff --git a/gnu/packages/patches/polkit-CVE-2021-3560.patch b/gnu/packages/patches/polkit-CVE-2021-3560.patch
new file mode 100644
index 0000000000..9aa0373fda
--- /dev/null
+++ b/gnu/packages/patches/polkit-CVE-2021-3560.patch
@@ -0,0 +1,21 @@
+This patch fixes CVE-2021-3560, "local privilege escalation using
+polkit_system_bus_name_get_creds_sync()":
+
+  https://www.openwall.com/lists/oss-security/2021/06/03/1
+
+Patch from <https://gitlab.freedesktop.org/polkit/polkit/-/commit/a04d13a>.
+
+diff --git a/src/polkit/polkitsystembusname.c b/src/polkit/polkitsystembusname.c
+index 8daa12cb9093c1d765c7b83654a2b8d0d382378e..8ed13631508dd96624898df90ee2ece4dcf3e1e5 100644
+--- a/src/polkit/polkitsystembusname.c
++++ b/src/polkit/polkitsystembusname.c
+@@ -435,6 +435,9 @@ polkit_system_bus_name_get_creds_sync (PolkitSystemBusName           *system_bus
+   while (!((data.retrieved_uid && data.retrieved_pid) || data.caught_error))
+     g_main_context_iteration (tmp_context, TRUE);
+ 
++  if (data.caught_error)
++    goto out;
++
+   if (out_uid)
+     *out_uid = data.uid;
+   if (out_pid)