diff options
| author |   Xiu Jianfeng <xiujianfeng@huawei.com> | 2022-06-14 10:14:49 +0800 |
|---|---|---|
| committer |   Paul Moore <paul@paul-moore.com> | 2022-06-14 21:52:37 -0400 |
| commit | 15ec76fb29be31df2bccb30fc09875274cba2776 (patch) | |
| tree | 77a1eb30dffc1231cafb9f21ea2aa2a55af72c16 /security/selinux | |
| parent | selinux: fix memleak in security_read_state_kernel() (diff) | |
| download | linux-dev-15ec76fb29be31df2bccb30fc09875274cba2776.tar.xz linux-dev-15ec76fb29be31df2bccb30fc09875274cba2776.zip | |
selinux: Add boundary check in put_entry()
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>
Diffstat (limited to 'security/selinux')
| -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; |