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(parent: 2734d6c) | patch
seq_file: disallow extremely large seq buffer allocations
authorEric Sandeen <sandeen@redhat.com>
Tue, 13 Jul 2021 15:49:23 +0000 (17:49 +0200)
committerLinus Torvalds <torvalds@linux-foundation.org>
Tue, 20 Jul 2021 00:18:48 +0000 (17:18 -0700)
commit8cae8cd89f05f6de223d63e6d15e31c8ba9cf53b
treece4ab88a4716617571135afcb7728f33739244a3tree
parent2734d6c1b1a089fb593ef6a23d4b70903526fe0ccommit | diff
seq_file: disallow extremely large seq buffer allocations

There is no reasonable need for a buffer larger than this, and it avoids
int overflow pitfalls.

Fixes: 058504edd026 ("fs/seq_file: fallback to vmalloc allocation")
Suggested-by: Al Viro <viro@zeniv.linux.org.uk>
Reported-by: Qualys Security Advisory <qsa@qualys.com>
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Cc: stable@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
fs/seq_file.c diff | blob | history
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