forked from pool/opensc
26 lines
952 B
Diff
26 lines
952 B
Diff
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From c449a181a6988cc1e8dc8764d23574e48cdc3fa6 Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?Veronika=20Hanul=C3=ADkov=C3=A1?= <vhanulik@redhat.com>
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Date: Mon, 19 Jun 2023 16:14:51 +0200
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Subject: [PATCH] pkcs15-cflex: check path length to prevent underflow
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Thanks OSS-Fuzz
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https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=58932
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---
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src/pkcs15init/pkcs15-cflex.c | 3 +++
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1 file changed, 3 insertions(+)
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diff --git a/src/pkcs15init/pkcs15-cflex.c b/src/pkcs15init/pkcs15-cflex.c
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index d06568073d..ce1d48e62c 100644
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--- a/src/pkcs15init/pkcs15-cflex.c
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+++ b/src/pkcs15init/pkcs15-cflex.c
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@@ -56,6 +56,9 @@ cflex_delete_file(sc_profile_t *profile, sc_pkcs15_card_t *p15card, sc_file_t *d
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int r = 0;
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/* Select the parent DF */
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path = df->path;
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+ if (path.len < 2) {
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+ return SC_ERROR_INVALID_ARGUMENTS;
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+ }
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path.len -= 2;
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r = sc_select_file(p15card->card, &path, &parent);
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if (r < 0)
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