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authorLinus Torvalds <torvalds@linux-foundation.org>2020-02-24 11:40:23 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2020-02-24 11:40:23 -0800
commit7031ecffab86199c2c688f7a723d03dfa6910fa6 (patch)
tree9e96a5ed577131f1e8814a8b12593d9c7b01ca74 /lib
parentMerge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs (diff)
parentcrypto: chacha20poly1305 - prevent integer overflow on large input (diff)
downloadlinux-dev-7031ecffab86199c2c688f7a723d03dfa6910fa6.tar.xz
linux-dev-7031ecffab86199c2c688f7a723d03dfa6910fa6.zip
Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Pull crypto fixes from Herbert Xu: "This fixes a Kconfig-related build error and an integer overflow in chacha20poly1305" * 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: crypto: chacha20poly1305 - prevent integer overflow on large input tee: amdtee: amdtee depends on CRYPTO_DEV_CCP_DD
Diffstat (limited to 'lib')
-rw-r--r--lib/crypto/chacha20poly1305.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/lib/crypto/chacha20poly1305.c b/lib/crypto/chacha20poly1305.c
index 6d83cafebc69..ad0699ce702f 100644
--- a/lib/crypto/chacha20poly1305.c
+++ b/lib/crypto/chacha20poly1305.c
@@ -235,6 +235,9 @@ bool chacha20poly1305_crypt_sg_inplace(struct scatterlist *src,
__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;