diff options
| author | Kees Cook <[email protected]> | 2019-12-04 16:52:40 -0800 |
|---|---|---|
| committer | Linus Torvalds <[email protected]> | 2019-12-04 19:44:14 -0800 |
| commit | 6d13de1489b6bf539695f96d945de3860e6d5e17 (patch) | |
| tree | 1d7f9e2f577347588bdc4335cc78340b7ea9947b /lib/memory-notifier-error-inject.c | |
| parent | 5bf8bec3f4ce044a223c40cbce92590d938f0e9c (diff) | |
uaccess: disallow > INT_MAX copy sizes
As we've done with VFS, string operations, etc, reject usercopy sizes
larger than INT_MAX, which would be nice to have for catching bugs
related to size calculation overflows[1].
This adds 10 bytes to x86_64 defconfig text and 1980 bytes to the data
section:
text data bss dec hex filename
19691167 5134320 1646664 26472151 193eed7 vmlinux.before
19691177 5136300 1646664 26474141 193f69d vmlinux.after
[1] https://marc.info/?l=linux-s390&m=156631939010493&w=2
Link: http://lkml.kernel.org/r/201908251612.F9902D7A@keescook
Signed-off-by: Kees Cook <[email protected]>
Suggested-by: Dan Carpenter <[email protected]>
Cc: Alexander Viro <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
Diffstat (limited to 'lib/memory-notifier-error-inject.c')
0 files changed, 0 insertions, 0 deletions