diff options
| author | Colin Cross <ccross@android.com> | 2014-08-05 12:05:17 -0700 |
|---|---|---|
| committer | Robb Glasser <rglasser@google.com> | 2016-03-25 15:31:47 -0700 |
| commit | c03cbb2219e2da30404db3c599647c7687d7c7e9 (patch) | |
| tree | cb9428fd3a0a67a1797f562d3d9bbb69679a9bea | |
| parent | 152777b5e09a3310a0668d5eddc0365bbb52b005 (diff) | |
mm: fix prctl_set_vma_anon_nameandroid-6.0.1_r0.76
prctl_set_vma_anon_name could attempt to set the name across
two vmas at the same time due to a typo, which might corrupt
the vma list. Fix it to use tmp instead of end to limit
the name setting to a single vma at a time.
Reported-by: Jed Davis <jld@mozilla.com>
Signed-off-by: Colin Cross <ccross@android.com>
(cherry picked from commit 091ff4dc3b3234e7f5e928843a44e54bf6961185)
Change-Id: I626f7b7b84885220a51daa76b8c40575dfa6fce0
| -rw-r--r-- | kernel/sys.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/sys.c b/kernel/sys.c index 407abeef9f6e..0b08c9f000f3 100644 --- a/kernel/sys.c +++ b/kernel/sys.c @@ -2187,7 +2187,7 @@ static int prctl_set_vma_anon_name(unsigned long start, unsigned long end, tmp = end; /* Here vma->vm_start <= start < tmp <= (end|vma->vm_end). */ - error = prctl_update_vma_anon_name(vma, &prev, start, end, + error = prctl_update_vma_anon_name(vma, &prev, start, tmp, (const char __user *)arg); if (error) return error; |