diff options
| author | Viktor Slavkovic <viktors@google.com> | 2018-01-08 10:43:03 -0800 |
|---|---|---|
| committer | Moyster <oysterized@gmail.com> | 2018-05-16 13:58:15 +0200 |
| commit | 360ca23ab6263924b77908e9d7adfdf6f63b4e18 (patch) | |
| tree | 8a5bde8cb063fee3d8278e45666aea96c5ec32a7 /include/uapi/linux/dvb | |
| parent | 995449179dc2009bef7bfab09fbececed75fc7ff (diff) | |
staging: android: ashmem: fix a race condition in ASHMEM_SET_SIZE ioctl
commit 443064cb0b1fb4569fe0a71209da7625129fb760 upstream.
A lock-unlock is missing in ASHMEM_SET_SIZE ioctl which can result in a
race condition when mmap is called. After the !asma->file check, before
setting asma->size, asma->file can be set in mmap. That would result in
having different asma->size than the mapped memory size. Combined with
ASHMEM_UNPIN ioctl and shrinker invocation, this can result in memory
corruption.
Signed-off-by: Viktor Slavkovic <viktors@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/uapi/linux/dvb')
0 files changed, 0 insertions, 0 deletions