aboutsummaryrefslogtreecommitdiffstats
path: root/target/linux/generic/backport-5.4/080-wireguard-0051-crypto-chacha20poly1305-prevent-integer-overflow-on-.patch
diff options
context:
space:
mode:
Diffstat (limited to 'target/linux/generic/backport-5.4/080-wireguard-0051-crypto-chacha20poly1305-prevent-integer-overflow-on-.patch')
-rw-r--r--target/linux/generic/backport-5.4/080-wireguard-0051-crypto-chacha20poly1305-prevent-integer-overflow-on-.patch40
1 files changed, 0 insertions, 40 deletions
diff --git a/target/linux/generic/backport-5.4/080-wireguard-0051-crypto-chacha20poly1305-prevent-integer-overflow-on-.patch b/target/linux/generic/backport-5.4/080-wireguard-0051-crypto-chacha20poly1305-prevent-integer-overflow-on-.patch
deleted file mode 100644
index 1ed49e5b6c..0000000000
--- a/target/linux/generic/backport-5.4/080-wireguard-0051-crypto-chacha20poly1305-prevent-integer-overflow-on-.patch
+++ /dev/null
@@ -1,40 +0,0 @@
-From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
-From: "Jason A. Donenfeld" <Jason@zx2c4.com>
-Date: Thu, 6 Feb 2020 12:42:01 +0100
-Subject: [PATCH] crypto: chacha20poly1305 - prevent integer overflow on large
- input
-
-commit c9cc0517bba9f0213f1e55172feceb99e5512daf upstream.
-
-This code assigns src_len (size_t) to sl (int), which causes problems
-when src_len is very large. Probably nobody in the kernel should be
-passing this much data to chacha20poly1305 all in one go anyway, so I
-don't think we need to change the algorithm or introduce larger types
-or anything. But we should at least error out early in this case and
-print a warning so that we get reports if this does happen and can look
-into why anybody is possibly passing it that much data or if they're
-accidently passing -1 or similar.
-
-Fixes: d95312a3ccc0 ("crypto: lib/chacha20poly1305 - reimplement crypt_from_sg() routine")
-Cc: Ard Biesheuvel <ardb@kernel.org>
-Cc: stable@vger.kernel.org # 5.5+
-Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
-Acked-by: Ard Biesheuvel <ardb@kernel.org>
-Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
-Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
----
- lib/crypto/chacha20poly1305.c | 3 +++
- 1 file changed, 3 insertions(+)
-
---- a/lib/crypto/chacha20poly1305.c
-+++ b/lib/crypto/chacha20poly1305.c
-@@ -235,6 +235,9 @@ bool chacha20poly1305_crypt_sg_inplace(s
- __le64 lens[2];
- } b __aligned(16);
-
-+ if (WARN_ON(src_len > INT_MAX))
-+ return false;
-+
- chacha_load_key(b.k, key);
-
- b.iv[0] = 0;