openwrt/package/libs/openssl/patches/510-e_devcrypto-ignore-error-when-closing-session.patch
Eneas U de Queiroz 387c2df15c
openssl: fix sysupgrade failure with devcrypto
The bump to 3.0.8 inadvertently removed patches that are needed here,
but were not adopted upstream.  The most important one changes the
default value of the DIGESTS setting from ALL to NONE.  The absence of
this patch causes a sysupgrade failure while the engine is in use with
digests enabled.  When this happens, the system fails to boot with a
kernel panic.

Also, explicitly set DIGESTS to NONE in the provided config file, and
change the default ciphers setting to disable ECB, which has been
recommended for a long time and may cause trouble with some apps.

The config file change by itself is not enough because the config file
may be preserved during sysupgrade.

For people affected by this bug:

You can either:
1. remove, the libopenssl-devcrypto package
2. disable the engine in /etc/config/openssl;
3. change /etc/ssl/engines.cnf.d/devcrypto.cnf to set DIGESTS=NONE;
4. update libopenssl-devcrypto to >=3.0.8-3

However, after doing any of the above, **you must reboot the device
before running sysupgrade** to ensure no running application is using
the engine.  Running `/etc/init.d/openssl restart` is not enough.

Fixes: 7e7e76afca "openssl: bump to 3.0.8"
Signed-off-by: Eneas U de Queiroz <cotequeiroz@gmail.com>
2023-03-06 18:09:13 -03:00

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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Eneas U de Queiroz <cote2004-github@yahoo.com>
Date: Mon, 11 Mar 2019 10:15:14 -0300
Subject: e_devcrypto: ignore error when closing session
In cipher_init, ignore an eventual error when closing the previous
session. It may have been closed by another process after a fork.
Signed-off-by: Eneas U de Queiroz <cote2004-github@yahoo.com>
--- a/engines/e_devcrypto.c
+++ b/engines/e_devcrypto.c
@@ -211,9 +211,8 @@ static int cipher_init(EVP_CIPHER_CTX *c
int ret;
/* cleanup a previous session */
- if (cipher_ctx->sess.ses != 0 &&
- clean_devcrypto_session(&cipher_ctx->sess) == 0)
- return 0;
+ if (cipher_ctx->sess.ses != 0)
+ clean_devcrypto_session(&cipher_ctx->sess);
cipher_ctx->sess.cipher = cipher_d->devcryptoid;
cipher_ctx->sess.keylen = cipher_d->keylen;