23 lines
923 B
Diff
23 lines
923 B
Diff
Index: busybox-1.31.1/modutils/modprobe.c
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===================================================================
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--- busybox-1.31.1.orig/modutils/modprobe.c 2019-06-10 18:50:53.000000000 +0800
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+++ busybox-1.31.1/modutils/modprobe.c 2021-03-29 12:01:36.027162311 +0800
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@@ -216,6 +216,17 @@
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{
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struct module_entry *m;
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+ /*
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+ * get_or_add_modentry() strips path from name and works
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+ * on remaining basename.
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+ * This would make "rmmod dir/name" and "modprobe dir/name"
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+ * to work like "rmmod name" and "modprobe name",
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+ * which is wrong, and can be abused via implicit modprobing:
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+ * "ifconfig /usbserial up" tries to modprobe netdev-/usbserial.
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+ */
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+ if (strchr(name, '/'))
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+ bb_error_msg_and_die("malformed module name '%s'", name);
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+
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m = get_or_add_modentry(name);
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if (!(option_mask32 & (OPT_REMOVE | OPT_SHOW_DEPS))
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&& (m->flags & (MODULE_FLAG_LOADED | MODULE_FLAG_BUILTIN))
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