From ed99135f7621459ef873991115372ba1afe88a04 Mon Sep 17 00:00:00 2001 From: Christian Göttsche Date: Thu, 11 May 2023 14:31:47 +0200 Subject: selinux: keep context struct members in sync MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Commit 53f3517ae087 ("selinux: do not leave dangling pointer behind") reset the `str` field of the `context` struct in an OOM error branch. In this struct the fields `str` and `len` are coupled and should be kept in sync. Set the length to zero according to the string be set to NULL. Fixes: 53f3517ae087 ("selinux: do not leave dangling pointer behind") Signed-off-by: Christian Göttsche Signed-off-by: Paul Moore --- security/selinux/ss/context.h | 1 + 1 file changed, 1 insertion(+) (limited to 'security/selinux') diff --git a/security/selinux/ss/context.h b/security/selinux/ss/context.h index 44179977f434..aed704b8c642 100644 --- a/security/selinux/ss/context.h +++ b/security/selinux/ss/context.h @@ -168,6 +168,7 @@ static inline int context_cpy(struct context *dst, const struct context *src) if (rc) { kfree(dst->str); dst->str = NULL; + dst->len = 0; return rc; } return 0; -- cgit v1.2.3