lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening PHC | |
Open Source and information security mailing list archives
| ||
|
Date: Mon, 9 Mar 2020 19:58:24 -0700 From: Alexei Starovoitov <alexei.starovoitov@...il.com> To: Andrii Nakryiko <andriin@...com> Cc: bpf <bpf@...r.kernel.org>, Network Development <netdev@...r.kernel.org>, Alexei Starovoitov <ast@...com>, Daniel Borkmann <daniel@...earbox.net>, Andrii Nakryiko <andrii.nakryiko@...il.com>, Kernel Team <kernel-team@...com> Subject: Re: [PATCH bpf-next] bpf: initialize storage pointers to NULL to prevent freeing garbage pointer On Mon, Mar 9, 2020 at 3:28 PM Andrii Nakryiko <andriin@...com> wrote: > > Local storage array isn't initialized, so if cgroup storage allocation fails > for BPF_CGROUP_STORAGE_SHARED, error handling code will attempt to free > uninitialized pointer for BPF_CGROUP_STORAGE_PERCPI storage type. Avoid this > by always initializing storage pointers to NULLs. > > Fixes: 8bad74f9840f ("bpf: extend cgroup bpf core to allow multiple cgroup storage types") > Signed-off-by: Andrii Nakryiko <andriin@...com> Applied to bpf tree and fixed typo in commit log.
Powered by blists - more mailing lists