Messages in this thread Patch in this message | | | Date | Tue, 24 Sep 2019 08:14:52 +0200 | From | Pavel Machek <> | Subject | [PATCH] btrfs compression: check string length |
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AFAICT, with current code user could pass something like "lzox" and still get "lzo" compression. Check string lengths to prevent that.
Signed-off-by: Pavel Machek <pavel@denx.de>
diff --git a/fs/btrfs/compression.c b/fs/btrfs/compression.c index b05b361..1083ab4 100644 --- a/fs/btrfs/compression.c +++ b/fs/btrfs/compression.c @@ -51,7 +51,7 @@ bool btrfs_compress_is_valid_type(const char *str, size_t len) for (i = 1; i < ARRAY_SIZE(btrfs_compress_types); i++) { size_t comp_len = strlen(btrfs_compress_types[i]); - if (len < comp_len) + if (len != comp_len) continue; if (!strncmp(btrfs_compress_types[i], str, comp_len)) -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html [unhandled content-type:application/pgp-signature] | |