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| author | Marcel Ziswiler <marcel.ziswiler@toradex.com> | 2021-05-04 14:54:19 +0200 |
|---|---|---|
| committer | Marcel Ziswiler <marcel.ziswiler@toradex.com> | 2021-05-05 23:03:56 +0200 |
| commit | a08f3c7add53eaaa4ab453ac3f06c24ec8927579 (patch) | |
| tree | d0d794479622b8054d0ae746a5dff0524cfe472c /kernel/bpf/cgroup.c | |
| parent | 82e97870feb6303ecc71371abc76a606e724b065 (diff) | |
| parent | 28910e01c43d9735f06fddbeaa42df3e112d1b3e (diff) | |
Merge commit '28910e01c43d9735f06fddbeaa42df3e112d1b3e' into toradex_5.4-2.3.x-imx
This basically contains NXP BSP Patch L5.4.70_2.3.2 plus kernel.org
v5.4.115 from https://github.com/Freescale/linux-fslc/tree/5.4-2.3.x-imx.
Related-to: ELB-3958
Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Diffstat (limited to 'kernel/bpf/cgroup.c')
| -rw-r--r-- | kernel/bpf/cgroup.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/kernel/bpf/cgroup.c b/kernel/bpf/cgroup.c index b701af27a779..c2f0aa818b7a 100644 --- a/kernel/bpf/cgroup.c +++ b/kernel/bpf/cgroup.c @@ -1057,12 +1057,13 @@ int __cgroup_bpf_run_filter_setsockopt(struct sock *sk, int *level, if (ctx.optlen != 0) { *optlen = ctx.optlen; *kernel_optval = ctx.optval; + /* export and don't free sockopt buf */ + return 0; } } out: - if (ret) - sockopt_free_buf(&ctx); + sockopt_free_buf(&ctx); return ret; } EXPORT_SYMBOL(__cgroup_bpf_run_filter_setsockopt); @@ -1108,6 +1109,11 @@ int __cgroup_bpf_run_filter_getsockopt(struct sock *sk, int level, goto out; } + if (ctx.optlen < 0) { + ret = -EFAULT; + goto out; + } + if (copy_from_user(ctx.optval, optval, min(ctx.optlen, max_optlen)) != 0) { ret = -EFAULT; @@ -1125,7 +1131,7 @@ int __cgroup_bpf_run_filter_getsockopt(struct sock *sk, int level, goto out; } - if (ctx.optlen > max_optlen) { + if (ctx.optlen > max_optlen || ctx.optlen < 0) { ret = -EFAULT; goto out; } |