CVE-2025-64329

containerd is an open-source container runtime. Versions 1.7.28 and below, 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 contain a bug in the CRI Attach implementation where a user can exhaust memory on the host due to goroutine leaks. This issue is fixed in versions 1.7.29, 2.0.7, 2.1.5 and 2.2.0. To workaround this vulnerability, users can set up an admission controller to control accesses to pods/attach resources.

Impact

A bug was found in containerd's CRI Attach implementation where a user can exhaust memory on the host due to goroutine leaks.

Repetitive calls of CRI Attach (e.g., kubectl attach) could increase the memory usage of containerd.

Patches

This bug has been fixed in the following containerd versions:

• 2.2.0
• 2.1.5
• 2.0.7
• 1.7.29

Users should update to these versions to resolve the issue.

Workarounds

Set up an admission controller to control accesses to pods/attach resources. e.g., Validating Admission Policy.

Credits

The containerd project would like to thank @Wheat2018 for responsibly disclosing this issue in accordance with the containerd security policy.

References

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-64329

For more information

If you have any questions or comments about this advisory:

• Open an issue in containerd
• Email us at [email protected]

To report a security issue in containerd:

• Report a new vulnerability

containerd is an industry-standard container runtime with an emphasis on simplicity, robustness and portability. It is available as a daemon for Linux and Windows, which can manage the complete container lifecycle of its host system: image transfer and storage, container execution and supervision, low-level storage and network attachments, etc.

Security Fix(es):

An overly broad default permission vulnerability was found in containerd.

• /var/lib/containerd was created with the permission bits 0o711, while it should be created with 0o700
  • Allowed local users on the host to potentially access the metadata store and the content store
• /run/containerd/io.containerd.grpc.v1.cri was created with 0o755, while it should be created with 0o700
  • Allowed local users on the host to potentially access the contents of Kubernetes local volumes. The contents of volumes might include setuid binaries, which could allow a local user on the host to elevate privileges on the host.
• /run/containerd/io.containerd.sandbox.controller.v1.shim was created with 0o711, while it should be created with 0o700

The directory paths may differ depending on the daemon configuration. When the temp directory path is specified in the daemon configuration, that directory was also created with 0o711, while it should be created with 0o700.(CVE-2024-25621)

A bug was found in containerd's CRI Attach implementation where a user can exhaust memory on the host due to goroutine leaks. Repetitive calls of CRI Attach (e.g., kubectl attach) could increase the memory usage of containerd.(CVE-2025-64329)

containerd is an industry-standard container runtime with an emphasis on simplicity, robustness and portability. It is available as a daemon for Linux and Windows, which can manage the complete container lifecycle of its host system: image transfer and storage, container execution and supervision, low-level storage and network attachments, etc.

Security Fix(es):

An overly broad default permission vulnerability was found in containerd.

• /var/lib/containerd was created with the permission bits 0o711, while it should be created with 0o700
  • Allowed local users on the host to potentially access the metadata store and the content store
• /run/containerd/io.containerd.grpc.v1.cri was created with 0o755, while it should be created with 0o700
  • Allowed local users on the host to potentially access the contents of Kubernetes local volumes. The contents of volumes might include setuid binaries, which could allow a local user on the host to elevate privileges on the host.
• /run/containerd/io.containerd.sandbox.controller.v1.shim was created with 0o711, while it should be created with 0o700

The directory paths may differ depending on the daemon configuration. When the temp directory path is specified in the daemon configuration, that directory was also created with 0o711, while it should be created with 0o700.(CVE-2024-25621)

A bug was found in containerd's CRI Attach implementation where a user can exhaust memory on the host due to goroutine leaks. Repetitive calls of CRI Attach (e.g., kubectl attach) could increase the memory usage of containerd.(CVE-2025-64329)

containerd is an industry-standard container runtime with an emphasis on simplicity, robustness and portability. It is available as a daemon for Linux and Windows, which can manage the complete container lifecycle of its host system: image transfer and storage, container execution and supervision, low-level storage and network attachments, etc.

Security Fix(es):

An overly broad default permission vulnerability was found in containerd.

• /var/lib/containerd was created with the permission bits 0o711, while it should be created with 0o700
  • Allowed local users on the host to potentially access the metadata store and the content store
• /run/containerd/io.containerd.grpc.v1.cri was created with 0o755, while it should be created with 0o700
  • Allowed local users on the host to potentially access the contents of Kubernetes local volumes. The contents of volumes might include setuid binaries, which could allow a local user on the host to elevate privileges on the host.
• /run/containerd/io.containerd.sandbox.controller.v1.shim was created with 0o711, while it should be created with 0o700

The directory paths may differ depending on the daemon configuration. When the temp directory path is specified in the daemon configuration, that directory was also created with 0o711, while it should be created with 0o700.(CVE-2024-25621)

A bug was found in containerd's CRI Attach implementation where a user can exhaust memory on the host due to goroutine leaks. Repetitive calls of CRI Attach (e.g., kubectl attach) could increase the memory usage of containerd.(CVE-2025-64329)

containerd is an industry-standard container runtime with an emphasis on simplicity, robustness and portability. It is available as a daemon for Linux and Windows, which can manage the complete container lifecycle of its host system: image transfer and storage, container execution and supervision, low-level storage and network attachments, etc.

Security Fix(es):

An overly broad default permission vulnerability was found in containerd.

• /var/lib/containerd was created with the permission bits 0o711, while it should be created with 0o700
  • Allowed local users on the host to potentially access the metadata store and the content store
• /run/containerd/io.containerd.grpc.v1.cri was created with 0o755, while it should be created with 0o700
  • Allowed local users on the host to potentially access the contents of Kubernetes local volumes. The contents of volumes might include setuid binaries, which could allow a local user on the host to elevate privileges on the host.
• /run/containerd/io.containerd.sandbox.controller.v1.shim was created with 0o711, while it should be created with 0o700

The directory paths may differ depending on the daemon configuration. When the temp directory path is specified in the daemon configuration, that directory was also created with 0o711, while it should be created with 0o700.(CVE-2024-25621)

A bug was found in containerd's CRI Attach implementation where a user can exhaust memory on the host due to goroutine leaks. Repetitive calls of CRI Attach (e.g., kubectl attach) could increase the memory usage of containerd.(CVE-2025-64329)

containerd is an industry-standard container runtime with an emphasis on simplicity, robustness and portability. It is available as a daemon for Linux and Windows, which can manage the complete container lifecycle of its host system: image transfer and storage, container execution and supervision, low-level storage and network attachments, etc.

Security Fix(es):

An overly broad default permission vulnerability was found in containerd.

• /var/lib/containerd was created with the permission bits 0o711, while it should be created with 0o700
  • Allowed local users on the host to potentially access the metadata store and the content store
• /run/containerd/io.containerd.grpc.v1.cri was created with 0o755, while it should be created with 0o700
  • Allowed local users on the host to potentially access the contents of Kubernetes local volumes. The contents of volumes might include setuid binaries, which could allow a local user on the host to elevate privileges on the host.
• /run/containerd/io.containerd.sandbox.controller.v1.shim was created with 0o711, while it should be created with 0o700

The directory paths may differ depending on the daemon configuration. When the temp directory path is specified in the daemon configuration, that directory was also created with 0o711, while it should be created with 0o700.(CVE-2024-25621)

A bug was found in containerd's CRI Attach implementation where a user can exhaust memory on the host due to goroutine leaks. Repetitive calls of CRI Attach (e.g., kubectl attach) could increase the memory usage of containerd.(CVE-2025-64329)

containerd is an industry-standard container runtime with an emphasis on simplicity, robustness and portability. It is available as a daemon for Linux and Windows, which can manage the complete container lifecycle of its host system: image transfer and storage, container execution and supervision, low-level storage and network attachments, etc.

Security Fix(es):

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.(CVE-2024-25621)

containerd is an open-source container runtime. Versions 1.7.28 and below, 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 contain a bug in the CRI Attach implementation where a user can exhaust memory on the host due to goroutine leaks. This issue is fixed in versions 1.7.29, 2.0.7, 2.1.5 and 2.2.0. To workaround this vulnerability, users can set up an admission controller to control accesses to pods/attach resources.(CVE-2025-64329)

containerd is an open-source container runtime. Versions 1.7.28 and below, 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 contain a bug in the CRI Attach implementation where a user can exhaust memory on the host due to goroutine leaks. This issue is fixed in versions 1.7.29, 2.0.7, 2.1.5 and 2.2.0. To workaround this vulnerability, users can set up an admission controller to control accesses to pods/attach resources.

containerd is an open-source container runtime. Versions 1.7.28 and below, 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 contain a bug in the CRI Attach implementation where a user can exhaust memory on the host due to goroutine leaks. This issue is fixed in versions 1.7.29, 2.0.7, 2.1.5 and 2.2.0. To workaround this vulnerability, users can set up an admission controller to control accesses to pods/attach resources.

containerd is an open-source container runtime. Versions 1.7.28 and below, 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 contain a bug in the CRI Attach implementation where a user can exhaust memory on the host due to goroutine leaks. This issue is fixed in versions 1.7.29, 2.0.7, 2.1.5 and 2.2.0. To workaround this vulnerability, users can set up an admission controller to control accesses to pods/attach resources.

containerd is an open-source container runtime. Versions 1.7.28 and below, 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 contain a bug in the CRI Attach implementation where a user can exhaust memory on the host due to goroutine leaks. This issue is fixed in versions 1.7.29, 2.0.7, 2.1.5 and 2.2.0. To workaround this vulnerability, users can set up an admission controller to control accesses to pods/attach resources.

containerd is an open-source container runtime. Versions 1.7.28 and below, 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 contain a bug in the CRI Attach implementation where a user can exhaust memory on the host due to goroutine leaks. This issue is fixed in versions 1.7.29, 2.0.7, 2.1.5 and 2.2.0. To workaround this vulnerability, users can set up an admission controller to control accesses to pods/attach resources.

containerd CRI server: Host memory exhaustion through Attach goroutine leak in github.com/containerd/containerd

It was discovered that containerd incorrectly set certain directory path permissions. An attacker could possibly use this issue to achieve unauthorised access to the files. (CVE-2024-25621) It was discovered that containerd did not properly handle the execution of the goroutine of container attach. An attacker could possibly use this issue to cause a denial of service. (CVE-2025-64329)

These are all security issues fixed in the containerd-1.7.29-1.1 package on the GA media of openSUSE Tumbleweed.

This update for containerd fixes the following issues

Update to 1.7.33:

• CVE-2024-25621: overly broad default permission vulnerability (bsc#1253126).
• CVE-2025-64329: goroutine leaks can lead to memory exhaustion on the host (bsc#1253132).
• CVE-2026-33186: google.golang.org/grpc: authorization bypass due to improper validation of the HTTP/2 :path pseudo- header (bsc#1260296).
• CVE-2026-33814: golang.org/x/net/http2: infinite loop in HTTP/2 transport when given bad SETTINGS_MAX_FRAME_SIZE (bsc#1265794).
• CVE-2026-34986: github.com/go-jose/go-jose/v4,github.com/go-jose/go-jose/v3: crafted JWE input with a missing encrypted key can lead to a denial of service (bsc#1262948).
• CVE-2026-35469: github.com/moby/spdystream: memory amplification in SPDY frame parsing leads to denial of service (bsc#1262266).
• CVE-2026-39821: golang.org/x/net/idna: failure to reject ASCII-only Punycode-encoded labels allows for validation bypass and privilege escalation (bsc#1266640).
• CVE-2026-46680: containerd user ID handling bypass allows runAsNonRoot evasion (bsc#1268355).
• CVE-2026-47262: Denial of Service (DoS) condition via a maliciously crafted image (bsc#1268441).
• CVE-2026-53488: CRI plugin propagates labels from an image config to a container without validation (bsc#1268430).

Changes for containerd:

• https://github.com/containerd/containerd/releases/tag/v1.7.33
• https://github.com/containerd/containerd/releases/tag/v1.7.32
• https://github.com/containerd/containerd/releases/tag/v1.7.31
• https://github.com/containerd/containerd/releases/tag/v1.7.30
• https://github.com/containerd/containerd/releases/tag/v1.7.29
• https://github.com/containerd/containerd/releases/tag/v1.7.28

This update for govulncheck-vulndb fixes the following issues:

• Update to version 0.0.20260723T184607 2026-07-23T18:46:07Z (jsc#PED-11136).

Go CVE Numbering Authority IDs added or updated with aliases:

• GO-2026-4730 CVE-2026-33022 GHSA-cv4x-93xx-wgfj
• GO-2026-4761 CVE-2026-33211 GHSA-j5q5-j9gm-2w5c
• GO-2026-5102 CVE-2026-45021 GHSA-3vcp-chfh-f6r2
• GO-2026-5272 CVE-2026-40938 GHSA-94jr-7pqp-xhcq
• GO-2026-5486 CVE-2026-40924 GHSA-m2cx-gpqf-qf74
• GO-2026-5542 CVE-2026-40090 GHSA-pj97-4p9w-gx3q
• GO-2026-5630 CVE-2026-25542 GHSA-rmx9-2pp3-xhcr
• GO-2026-5643 CVE-2026-40923 GHSA-rx35-6rhx-7858
• GO-2026-5675 CVE-2026-41492 GHSA-vvf7-6rmr-m29q
• GO-2026-5711 CVE-2026-40161 GHSA-wjxp-xrpv-xpff
• GO-2026-5746 CVE-2026-41567 GHSA-x86f-5xw2-fm2r
• GO-2026-5749 CVE-2026-41328 GHSA-x92x-px7w-4gx4
• GO-2026-5837 CVE-2026-44840 GHSA-q2m9-6jp9-c6mc
• GO-2026-5929 CVE-2026-44342 GHSA-26v7-h57m-gh9m
• GO-2026-5930 CVE-2026-33655 GHSA-6qcr-qxgr-m7fv
• GO-2026-5933 GHSA-3g4q-2f67-2gvh
• GO-2026-5934 GHSA-59qp-cfj3-rp64
• GO-2026-5935 GHSA-7856-g3gv-9wq8
• GO-2026-5936 CVE-2026-53552 GHSA-26rh-24rg-j3vv
• GO-2026-5937 CVE-2026-53508 GHSA-2jcc-mxv7-p3f9
• GO-2026-5938 CVE-2026-53553 GHSA-4g5x-hcwm-82jw
• GO-2026-5939 CVE-2026-10517 GHSA-698x-9w2p-7vvp
• GO-2026-5940 CVE-2026-53572 GHSA-6w3m-4hhp-775q
• GO-2026-5941 CVE-2026-53487 GHSA-gvhc-wv3v-7pf8
• GO-2026-5942 CVE-2026-46600
• GO-2026-5944 CVE-2026-50197 GHSA-659f-rgp5-w4wf
• GO-2026-5945 CVE-2026-6815 GHSA-rmxx-v9rj-vpvg
• GO-2026-5946 CVE-2026-52831 GHSA-v5px-423j-pf7p
• GO-2026-5947 CVE-2026-53649 GHSA-xqhv-chqm-fhcc
• GO-2026-5948 CVE-2026-50554 GHSA-588f-fvcv-xhvf
• GO-2026-5949 CVE-2026-50553 GHSA-rqrh-8wpv-x7hh
• GO-2026-5950 CVE-2026-53602 GHSA-339v-266x-79xr
• GO-2026-5951 CVE-2026-10219 GHSA-6jm8-4fhr-5w64
• GO-2026-5952 CVE-2026-49834 GHSA-9vcr-p3rj-q5q6
• GO-2026-5953 CVE-2026-9094 GHSA-c9w5-qp6m-m395
• GO-2026-5956 CVE-2026-55252 GHSA-h5g6-xmh4-hc37
• GO-2026-5957 CVE-2026-54158 GHSA-5xfx-xj4h-5p7r
• GO-2026-5958 CVE-2026-54068 GHSA-gcm7-57gf-953c
• GO-2026-5959 CVE-2026-54072 GHSA-h29v-hj44-q8cv
• GO-2026-5961 CVE-2026-54069 GHSA-hvr9-72v2-fff3
• GO-2026-5962 CVE-2026-54088 GHSA-m93h-4hw7-5qcm
• GO-2026-5963 CVE-2026-54067 GHSA-mvjr-vv3c-w4qv
• GO-2026-5964 CVE-2026-54066 GHSA-p4m3-mgmm-c664
• GO-2026-5965 CVE-2026-54070 GHSA-w7cg-whh7-xp28
• GO-2026-5966 CVE-2026-54089 GHSA-xqp3-jq6g-x3qm
• GO-2026-5967 CVE-2026-50551 GHSA-56mp-4f3v-fgj2
• GO-2026-5968 CVE-2026-54174 GHSA-fpg8-7664-jc5q
• GO-2026-5969 GHSA-g936-7jqj-mwv8
• GO-2026-5970 CVE-2026-56852
• GO-2026-5973 CVE-2026-54250 GHSA-jxr7-mqhw-9p98
• GO-2026-5974 CVE-2026-44300 GHSA-wmj8-9953-vff5
• GO-2026-5975 CVE-2026-50018 GHSA-42j2-w334-qxw7
• GO-2026-5976 CVE-2026-50141 GHSA-g7mm-9vx7-jm7h
• GO-2026-5977 CVE-2026-50013 GHSA-qrh4-p6v4-mrfg
• GO-2026-5978 CVE-2026-50125 GHSA-qw5r-ppcg-f8rj
• GO-2026-5979 CVE-2026-50006 GHSA-xrcf-6jh3-ggvx
• GO-2026-5980 CVE-2026-50158 GHSA-2c7f-fxww-6w6c
• GO-2026-5981 GHSA-mqxv-9rm6-w8qc
• GO-2026-5982 GHSA-pqg7-v6wh-3pfp
• GO-2026-5984 CVE-2026-53604 GHSA-2p2f-px33-4vv5
• GO-2026-5985 GHSA-7rx3-5wx3-5v76
• GO-2026-5986 CVE-2026-61699 GHSA-cm26-5974-52h8
• GO-2026-5987 CVE-2026-55513 GHSA-g4x6-jcvr-9m3g
• GO-2026-5988 CVE-2026-54628 GHSA-hwrq-8wxh-q4xv
• GO-2026-5989 CVE-2026-55512 GHSA-m3cx-mwpg-32jg
• GO-2026-5990 CVE-2026-54629 GHSA-mf78-3rpf-r784
• GO-2026-5991 CVE-2026-53603 GHSA-q4vm-pq3q-8wgq
• GO-2026-5992 CVE-2026-61549 GHSA-qf34-295c-26v8
• GO-2026-5996 CVE-2026-54450 GHSA-pph6-vfjv-vpjw
• GO-2026-5997 CVE-2026-54452 GHSA-xgch-x3mx-cm3c
• GO-2026-5998 CVE-2026-54495 GHSA-398h-7f66-3h4p
• GO-2026-5999 CVE-2026-10814 GHSA-jh6h-v6mp-h22v
• GO-2026-6002 CVE-2026-58196 GHSA-pr64-jmmf-jp54
• GO-2026-6003 CVE-2026-53714 GHSA-22xc-xg2r-9j7v
• GO-2026-6004 CVE-2026-52833 GHSA-3v79-m2cg-89ww
• GO-2026-6005 CVE-2026-53715 GHSA-8fv2-88gg-hm7q
• GO-2026-6006 CVE-2026-53716 GHSA-cxpq-8v7q-cg56 *…

This update for containerd fixes the following issues:

Update to containerd v1.7.29:

• CVE-2024-25621: Fixed overly broad default permission vulnerability (bsc#1253126).
• CVE-2025-64329: Fixed goroutine leaks that could have led to memory exhaustion on the host (bsc#1253132).

This update for containerd fixes the following issues:

• CVE-2024-25621: Fixed overly broad default permission vulnerability (bsc#1253126).
• CVE-2025-64329: Fixed goroutine leaks can lead to memory exhaustion on the host (bsc#1253132).

This update for containerd fixes the following issues:

• Update to containerd v1.7.29
• CVE-2024-25621: Fixed an overly broad default permission vulnerability. (bsc#1253126)
• CVE-2025-64329: Fixed a goroutine leaks which can lead to memory exhaustion on the host. (bsc#1253132)

This update for containerd fixes the following issues:

• Update to containerd v1.7.29
• CVE-2024-25621: Fixed an overly broad default permission vulnerability. (bsc#1253126)
• CVE-2025-64329: Fixed a goroutine leaks which can lead to memory exhaustion on the host. (bsc#1253132)