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| author | Ben Hutchings <ben@decadent.org.uk> | 2015-11-01 19:22:53 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2015-11-03 00:25:00 +0300 |
| commit | 4ab42d78e37a294ac7bc56901d563c642e03c4ae (patch) | |
| tree | eed185aafd345a302f05711c3e6d5d80fca7c3f9 /mm/debug-pagealloc.c | |
| parent | 0baa57d8dc32db78369d8b5176ef56c5e2e18ab3 (diff) | |
| download | linux-4ab42d78e37a294ac7bc56901d563c642e03c4ae.tar.xz | |
ppp, slip: Validate VJ compression slot parameters completely
Currently slhc_init() treats out-of-range values of rslots and tslots
as equivalent to 0, except that if tslots is too large it will
dereference a null pointer (CVE-2015-7799).
Add a range-check at the top of the function and make it return an
ERR_PTR() on error instead of NULL. Change the callers accordingly.
Compile-tested only.
Reported-by: 郭永刚 <guoyonggang@360.cn>
References: http://article.gmane.org/gmane.comp.security.oss.general/17908
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'mm/debug-pagealloc.c')
0 files changed, 0 insertions, 0 deletions