* [PATCH 02/06] ecryptfs: Validate body size
@ 2006-06-26 23:47 Stephan Müller
0 siblings, 0 replies; only message in thread
From: Stephan Müller @ 2006-06-26 23:47 UTC (permalink / raw)
To: linux-kernel, akpm; +Cc: Michael Halcrow
Kernel version: 2.6.17-mm1
The patch ensures that body_size is checked for improper values.
Signed-off-by: Stephan Mueller <smueller@chronox.de>
---
fs/ecryptfs/keystore.c | 6 ++++++
1 files changed, 6 insertions(+), 0 deletions(-)
4d78bed2424c6af4a0d1ef4944d485bd5fd48d36
diff --git a/fs/ecryptfs/keystore.c b/fs/ecryptfs/keystore.c
index e80d7a6..9b98fac 100644
--- a/fs/ecryptfs/keystore.c
+++ b/fs/ecryptfs/keystore.c
@@ -397,6 +397,12 @@ parse_tag_11_packet(unsigned char *data,
rc = -EINVAL;
goto out;
}
+ if (body_size < 13) {
+ ecryptfs_printk(KERN_WARNING, "Invalid body size ([%d])\n",
+ body_size);
+ rc = -EINVAL;
+ goto out;
+ }
/* We have 13 bytes of surrounding packet values */
(*tag_11_contents_size) = (body_size - 13);
if ((*tag_11_contents_size) > max_contents_bytes) {
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