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Merge pull request #41563 from thaJeztah/hold_that_cap

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Temporarily disable CAP_PERFMON, CAP_BPF, and CAP_CHECKPOINT_RESTORE
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Tibor Vass 2020-10-19 09:46:57 -07:00 committed by GitHub
commit 33be8d4b40
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1 changed files with 12 additions and 0 deletions
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12
oci/caps/utils.go
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@ -16,6 +16,18 @@ func init() {
if last == capability.Cap(63) {
last = capability.CAP_BLOCK_SUSPEND
}
if last > capability.CAP_AUDIT_READ {
// Prevents docker from setting CAP_PERFMON, CAP_BPF, and CAP_CHECKPOINT_RESTORE
// capabilities on privileged (or CAP_ALL) containers on Kernel 5.8 and up.
// While these kernels support these capabilities, the current release of
// runc ships with an older version of /gocapability/capability, and does
// not know about them, causing an error to be produced.
//
// FIXME remove once https://github.com/opencontainers/runc/commit/6dfbe9b80707b1ca188255e8def15263348e0f9a
// is included in a runc release and once we stop supporting containerd 1.3.x
// (which ships with runc v1.0.0-rc92)
last = capability.CAP_AUDIT_READ
}
for _, cap := range capability.List() {
if cap > last {
continue