mirrors/linux-stable
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2024-09-21 10:01:00 +00:00
Code Issues Releases Wiki Activity

libbpf: Fix memleak in libbpf_netlink_recv()

Browse source 
[ Upstream commit 1b8c924a05 ]

Ensure that libbpf_netlink_recv() frees dynamically allocated buffer in
all code paths.

Fixes: 9c3de619e1 ("libbpf: Use dynamically allocated buffer when receiving netlink messages")
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Toke Høiland-Jørgensen <toke@redhat.com>
Link: https://lore.kernel.org/bpf/20220217073958.276959-1-andrii@kernel.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Andrii Nakryiko 2022-02-16 23:39:58 -08:00 committed by Greg Kroah-Hartman
parent 0f47edc22c
commit d85baefc85
1 changed files with 5 additions and 3 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

8
tools/lib/bpf/netlink.c
View file

@ -176,7 +176,8 @@ static int libbpf_netlink_recv(int sock, __u32 nl_pid, int seq,
libbpf_nla_dump_errormsg(nh);
goto done;
case NLMSG_DONE:
return 0;
ret = 0;
goto done;
default:
break;
}
@ -188,9 +189,10 @@ static int libbpf_netlink_recv(int sock, __u32 nl_pid, int seq,
case NL_NEXT:
goto start;
case NL_DONE:
return 0;
ret = 0;
goto done;
default:
return ret;
goto done;
}
}
}