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File _service:tar_scm:backport-libbpf-Fix-overrun-in-netlink-attribute-iteration.patch of Package libbpf
From 3745a20b2802cb215de0b3d4e289777209c73e16 Mon Sep 17 00:00:00 2001 From: Xin Liu <liuxin350@huawei.com> Date: Fri, 30 Sep 2022 17:07:08 +0800 Subject: [PATCH] libbpf: Fix overrun in netlink attribute iteration I accidentally found that a change in commit 1045b03e07d8 ("netlink: fix overrun in attribute iteration") was not synchronized to the function `nla_ok` in tools/lib/bpf/nlattr.c, I think it is necessary to modify, this patch will do it. Signed-off-by: Xin Liu <liuxin350@huawei.com> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/bpf/20220930090708.62394-1-liuxin350@huawei.com --- src/nlattr.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/src/nlattr.c b/src/nlattr.c index f57e77a..3900d05 100644 --- a/src/nlattr.c +++ b/src/nlattr.c @@ -32,7 +32,7 @@ static struct nlattr *nla_next(const struct nlattr *nla, int *remaining) static int nla_ok(const struct nlattr *nla, int remaining) { - return remaining >= sizeof(*nla) && + return remaining >= (int)sizeof(*nla) && nla->nla_len >= sizeof(*nla) && nla->nla_len <= remaining; } -- 2.33.0
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