CVE-2024-25621 — containerd affected by a local privilege escalation via wide permissions on CRI directory

2026-10-02T01:40:21.789488+00:00

Affected: containerd

containerd is an open-source container runtime. Versions 0.1.0 through 1.7.28, 2.0.0-beta.0 through 2.0.6, 2.1.0-beta.0 through 2.1.4 and 2.2.0-beta.0 through 2.2.0-rc.1 have an overly broad default permission vulnerability. Directory paths `/var/lib/containerd`, `/run/containerd/io.containerd.grpc.v1.cri` and `/run/containerd/io.containerd.sandbox.controller.v1.shim` were all created with incorrect permissions. This issue is fixed in versions 1.7.29, 2.0.7, 2.1.5 and 2.2.0. Workarounds include updating system administrator permissions so the host can manually chmod the directories to not have group or world accessible permissions, or to run containerd in rootless mode.

GHSA-gcjh-h69q-9w9g — cel-go: JSON Private Fields Exposed via NativeTypes and ParseStructTag

2026-10-02T01:40:21.789607+00:00

Affected: Go: github.com/google/cel-go

The function `ext.NativeTypes(ParseStructTag("json"))` does not honour the `encoding/json` skip directive `json:"-"`. Fields tagged `json:"-"` are registered in the CEL type system under the literal name `"-"` and are readable from any user-submitted CEL expression via `dyn(obj)["-"]`.

Additionally, `newNativeTypes` silently registers every nested struct reachable from the type passed to `NativeTypes`, including types from third-party dependencies the developer never examined.

## Root cause

In `fieldNameByTag`, the helper used by `ParseStructTag("json")` to translate Go struct tags into CEL field names.

See at `ext/native.go:146`:

```go func fieldNameByTag(structTagToParse string) func(field reflect.StructField) string { return func(field reflect.StructField) string { tag, found := field.Tag.Lookup(structTagToParse) if found { splits := strings.Split(tag, ",") if len(splits) > 0 { // We make the assumption that the leftmost entry in the tag is the name. // This seems to be true for most tags that have the concept of a name/key, such as: // https://pkg.go.dev/encoding/xml#Marshal // https://pkg.go.dev/encoding/json#Marshal // https://pkg.go.dev/go.mongodb.org/mongo-driver/bson#hdr-Structs // https://pkg.go.dev/go.yaml.in/yaml/v3#Marshal name := splits[0] return name } }

re…

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CVE-2024-25621 — containerd affected by a local privilege escalation via wide permissions on CRI directory

GHSA-gcjh-h69q-9w9g — cel-go: JSON Private Fields Exposed via NativeTypes and ParseStructTag