path: root/drivers/net/ethernet/chelsio/cxgb3/l2t.c
diff options
authorMichal Hocko <mhocko@suse.com>2017-05-08 15:57:24 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2017-05-08 17:15:12 -0700
commit81be3dee96346fbe08c31be5ef74f03f6b63cf68 (patch)
tree0da1345c2f9b956b944c442e1df062dce6d692f9 /drivers/net/ethernet/chelsio/cxgb3/l2t.c
parentnet/ipv6/ila/ila_xlat.c: simplify a strange allocation pattern (diff)
fs/xattr.c: zero out memory copied to userspace in getxattr
getxattr uses vmalloc to allocate memory if kzalloc fails. This is filled by vfs_getxattr and then copied to the userspace. vmalloc, however, doesn't zero out the memory so if the specific implementation of the xattr handler is sloppy we can theoretically expose a kernel memory. There is no real sign this is really the case but let's make sure this will not happen and use vzalloc instead. Fixes: 779302e67835 ("fs/xattr.c:getxattr(): improve handling of allocation failures") Link: http://lkml.kernel.org/r/20170306103327.2766-1-mhocko@kernel.org Acked-by: Kees Cook <keescook@chromium.org> Reported-by: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Michal Hocko <mhocko@suse.com> Cc: <stable@vger.kernel.org> [3.6+] Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/net/ethernet/chelsio/cxgb3/l2t.c')
0 files changed, 0 insertions, 0 deletions