diff options
| author | Xiu Jianfeng <xiujianfeng@huawei.com> | 2022-06-14 10:14:49 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-08-17 14:23:05 +0200 |
| commit | 7363a69d8ca8f0086f8e1196c8ddaf0e168614b1 (patch) | |
| tree | b5e42ec165ceda007c3b3a5ce408c6238bbaf5a3 /security | |
| parent | c877c5217145bda8fd95f506bf42f8d981afa57d (diff) | |
selinux: Add boundary check in put_entry()
[ Upstream commit 15ec76fb29be31df2bccb30fc09875274cba2776 ]
Just like next_entry(), boundary check is necessary to prevent memory
out-of-bound access.
Signed-off-by: Xiu Jianfeng <xiujianfeng@huawei.com>
Signed-off-by: Paul Moore <paul@paul-moore.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'security')
| -rw-r--r-- | security/selinux/ss/policydb.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/security/selinux/ss/policydb.h b/security/selinux/ss/policydb.h index c24d4e1063ea..ffc4e7bad205 100644 --- a/security/selinux/ss/policydb.h +++ b/security/selinux/ss/policydb.h @@ -370,6 +370,8 @@ static inline int put_entry(const void *buf, size_t bytes, int num, struct polic { size_t len = bytes * num; + if (len > fp->len) + return -EINVAL; memcpy(fp->data, buf, len); fp->data += len; fp->len -= len; |