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| author | Xin Liu <liuxin350@huawei.com> | 2022-09-30 12:07:08 +0300 |
|---|---|---|
| committer | Andrii Nakryiko <andrii@kernel.org> | 2022-10-01 01:16:22 +0300 |
| commit | 51e05a8cf8eb34da7473823b7f236a77adfef0b4 (patch) | |
| tree | 8f7cb7c5b1a2f5a1017ae2e40e9bb2c54670d93b /tools/lib/bpf/nlattr.c | |
| parent | 2efcf695bfc0f078dd7d5d23d96a97db34c930d5 (diff) | |
| download | linux-51e05a8cf8eb34da7473823b7f236a77adfef0b4.tar.xz | |
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
Diffstat (limited to 'tools/lib/bpf/nlattr.c')
| -rw-r--r-- | tools/lib/bpf/nlattr.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/tools/lib/bpf/nlattr.c b/tools/lib/bpf/nlattr.c index f57e77a6e40f..3900d052ed19 100644 --- a/tools/lib/bpf/nlattr.c +++ b/tools/lib/bpf/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; } |