
CVE catalog
CVE-2026-53495
containerd: CVE-2026-53495
- Severity
- Medium · CVSS 6.8
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.16% · Oct 25, 2026
containerd is an open-source container runtime. Prior to 1.7.35, 2.0.12, 2.2.8, and 2.3.5, containerd on Linux with the CRI plugin enabled can indefinitely block the drainExecSyncIO goroutine in internal/cri/server/container_execsync.go when CRI ExecSync is used by exec probes or lifecycle hooks that launch long-lived background child processes retaining standard input and output pipes. The input and output drain phase has no default timeout and did not stop when the request context was canceled, so repeated ExecSync invocations can accumulate blocked goroutines and host memory. The resulting resource exhaustion can cause the OOM killer to terminate containerd, leaving the container runtime unavailable until restart. Deployments not using containerd's CRI implementation and containers not running on Linux are not affected. This issue is fixed in versions 1.7.35, 2.0.12, 2.2.8, and 2.3.5.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | containerd | sid | 2.1.9+ds1-5 | fixed |
| Debian | containerd | forky | 2.1.9+ds1-5 | fixed |
| Debian | containerd | trixie | 1.7.24~ds1-6+deb13u1 | vulnerable |
| Debian | containerd | trixie-security | 1.7.24~ds1-6+deb13u1 | vulnerable |
| Debian | containerd | bookworm | 1.6.20~ds1-1+deb12u3 | vulnerable |
| Debian | containerd | bookworm-security | 1.6.20~ds1-1+deb12u2 | vulnerable |
| Go | github.com/containerd/containerd/v2 | Not reported | 2.3.5 | fixed |
| Go | github.com/containerd/containerd | Not reported | 1.7.35 | fixed |
| Go | github.com/containerd/containerd/v2 | Not reported | 2.2.8 | fixed |
| Opensuse | trivy | tumbleweed | 0.75.0-1.1 | fixed |
| Opensuse | trivy | leap 16.0 | 0.74.0-160000.3.1 | fixed |
| Opensuse | hauler | tumbleweed | 2.1.0-4.1 | fixed |
| Opensuse | hauler | leap 16.0 | 2.1.1-bp160.1.1 | fixed |
| Ubuntu | containerd | pro | 1.7.24~ds1-8ubuntu1 | vulnerable |
| Ubuntu | containerd | pro | 1.7.24~ds1-10ubuntu1 | vulnerable |
| Ubuntu | containerd | pro | 1.7.24~ds1-10ubuntu1+esm1 | vulnerable |
| Ubuntu | containerd-app | pro | 1.7.2-0ubuntu1~22.04.1 | vulnerable |
| Ubuntu | containerd-app | pro | 1.7.12-0ubuntu2~22.04.1 | vulnerable |
| Ubuntu | containerd-app | pro | 1.7.24-0ubuntu1~22.04.1 | vulnerable |
| Ubuntu | containerd-app | pro | 1.7.24-0ubuntu1~22.04.2 | vulnerable |
| Ubuntu | containerd-app | pro | 1.7.27-0ubuntu1~22.04.1 | vulnerable |
| Ubuntu | containerd-app | pro | 1.7.28-0ubuntu1~22.04.1 | vulnerable |
| Ubuntu | containerd-app | pro | 1.7.28-0ubuntu1~22.04.1+esm1 | vulnerable |
| Ubuntu | containerd-app | pro | 2.2.1-0ubuntu1~22.04.1 | vulnerable |
| Ubuntu | containerd-app | pro | 2.2.1-0ubuntu1~22.04.2 | vulnerable |
| Ubuntu | containerd | 22.04 | 1.5.5-0ubuntu3 | vulnerable |
| Ubuntu | containerd | 22.04 | 1.5.9-0ubuntu1 | vulnerable |
| Ubuntu | containerd | 22.04 | 1.5.9-0ubuntu2 | vulnerable |
| Ubuntu | containerd | 22.04 | 1.5.9-0ubuntu3 | vulnerable |
| Ubuntu | containerd | 22.04 | 1.5.9-0ubuntu3.1 | vulnerable |
| Ubuntu | containerd | 22.04 | 1.6.12-0ubuntu1~22.04.1 | vulnerable |
| Ubuntu | containerd | 22.04 | 1.6.12-0ubuntu1~22.04.3 | vulnerable |
| Ubuntu | containerd | 22.04 | 1.6.12-0ubuntu1~22.04.5 | vulnerable |
| Ubuntu | containerd | 22.04 | 1.6.12-0ubuntu1~22.04.6 | vulnerable |
| Ubuntu | containerd | 22.04 | 1.6.12-0ubuntu1~22.04.7 | vulnerable |
| Ubuntu | containerd | 22.04 | 1.6.12-0ubuntu1~22.04.8 | vulnerable |
| Ubuntu | containerd | 22.04 | 1.6.12-0ubuntu1~22.04.9 | vulnerable |
| Ubuntu | containerd | 22.04 | 1.6.12-0ubuntu1~22.04.10 | vulnerable |
| Ubuntu | containerd | 22.04 | 1.6.12-0ubuntu1~22.04.11 | vulnerable |
| Ubuntu | containerd-app | 24.04 | 1.7.2-0ubuntu2 | vulnerable |
| Ubuntu | containerd-app | 24.04 | 1.7.12-0ubuntu1 | vulnerable |
| Ubuntu | containerd-app | 24.04 | 1.7.12-0ubuntu2 | vulnerable |
| Ubuntu | containerd-app | 24.04 | 1.7.12-0ubuntu3 | vulnerable |
| Ubuntu | containerd-app | 24.04 | 1.7.12-0ubuntu4 | vulnerable |
| Ubuntu | containerd-app | 24.04 | 1.7.12-0ubuntu4.1 | vulnerable |
| Ubuntu | containerd-app | 24.04 | 1.7.19-0ubuntu1~24.04.1 | vulnerable |
| Ubuntu | containerd-app | 24.04 | 1.7.19+really1.7.12-0ubuntu4.2 | vulnerable |
| Ubuntu | containerd-app | 24.04 | 1.7.24-0ubuntu1~24.04.1 | vulnerable |
| Ubuntu | containerd-app | 24.04 | 1.7.24-0ubuntu1~24.04.2 | vulnerable |
| Ubuntu | containerd-app | 24.04 | 1.7.27-0ubuntu1~24.04.1 | vulnerable |
| Ubuntu | containerd-app | 24.04 | 1.7.28-0ubuntu1~24.04.1 | vulnerable |
| Ubuntu | containerd-app | 24.04 | 1.7.28-0ubuntu1~24.04.2 | vulnerable |
| Ubuntu | containerd-app | 24.04 | 2.2.1-0ubuntu1~24.04.2 | vulnerable |
| Ubuntu | containerd-app | 24.04 | 2.2.1-0ubuntu1~24.04.3 | vulnerable |
| Ubuntu | containerd-app | 24.04 | 2.2.1-0ubuntu1~24.04.4 | vulnerable |
| Ubuntu | containerd | 26.10 | 1.7.24~ds1-10ubuntu1 | vulnerable |
| Ubuntu | containerd | 26.10 | 2.1.9+ds1-2ubuntu1 | vulnerable |
| Ubuntu | containerd | 26.10 | 2.1.9+ds1-3ubuntu1 | vulnerable |
| Ubuntu | containerd | 26.10 | 2.1.9+ds1-5ubuntu1 | vulnerable |
| Ubuntu | containerd-app | 26.10 | 2.2.2-0ubuntu1 | vulnerable |
| Ubuntu | containerd-app | 26.10 | 2.2.2-0ubuntu2 | vulnerable |
| Ubuntu | containerd-app | 26.10 | 2.3.4+dfsg1-0ubuntu2 | vulnerable |
| Ubuntu | containerd-stable | 26.10 | 2.2.2-0ubuntu1 | vulnerable |
| Ubuntu | containerd-stable | 26.10 | 2.2.2-0ubuntu2 | vulnerable |
| Ubuntu | containerd-stable | 26.10 | 2.3.4+dfsg1-0ubuntu2 | vulnerable |
| Ubuntu | containerd-app | 26.04 | 2.1.3-0ubuntu3 | vulnerable |
| Ubuntu | containerd-app | 26.04 | 2.2.1-0ubuntu1 | vulnerable |
| Ubuntu | containerd-app | 26.04 | 2.2.2-0ubuntu1 | vulnerable |
| Ubuntu | containerd-app | 26.04 | 2.2.2-0ubuntu1.1 | vulnerable |
| Ubuntu | containerd-app | 26.04 | 2.2.2-0ubuntu1.2 | vulnerable |
| Ubuntu | containerd-stable | 26.04 | 2.1.3-0ubuntu1 | vulnerable |
| Ubuntu | containerd-stable | 26.04 | 2.1.5-0ubuntu1 | vulnerable |
| Ubuntu | containerd-stable | 26.04 | 2.2.1-0ubuntu1 | vulnerable |
| Ubuntu | containerd-stable | 26.04 | 2.2.2-0ubuntu1 | vulnerable |
| Ubuntu | containerd-stable | 26.04 | 2.2.2-0ubuntu1.1 | vulnerable |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | containerd | source | sid | 2.1.9+ds1-4 | not yet assigned | Not reported | [1148180] |
| Debian | containerd | source | forky | 2.1.9+ds1-4 | not yet assigned | Not reported | [1148180] |
| Debian | containerd | source | trixie | (unfixed) | not yet assigned | Not reported | [1148180] |
| Debian | containerd | source | bookworm | (unfixed) | not yet assigned | Not reported | [1148180] |
| Go | github.com/containerd/containerd/v2 | go | Not reported | 2.3.5 | Not reported | GHSA-7JXH-36Q5-GCQV | Not reported |
| Go | github.com/containerd/containerd | go | Not reported | 1.7.35 | Not reported | GHSA-7JXH-36Q5-GCQV | Not reported |
| Go | github.com/containerd/containerd/v2 | go | Not reported | 2.2.8 | Not reported | GHSA-7JXH-36Q5-GCQV | Not reported |
| Opensuse | trivy | rpm | tumbleweed | 0.75.0-1.1 | Not reported | OPENSUSE-SU-2026:11977-1 | Not reported |
| Opensuse | trivy | rpm | leap 16.0 | 0.74.0-160000.3.1 | Not reported | OPENSUSE-SU-2026:21835-1 | Not reported |
| Opensuse | hauler | rpm | tumbleweed | 2.1.0-4.1 | Not reported | OPENSUSE-SU-2026:11766-1 | Not reported |
| Opensuse | hauler | rpm | leap 16.0 | 2.1.1-bp160.1.1 | Not reported | OPENSUSE-SU-2026:22116-1 | Not reported |
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [containerd]Affected
Details (4)
1.6.20~ds1-1+deb12u3· amd64 · bookwormAffected
dsa · containerd · debian · bookworm; dsa · containerd · debian · 12
1.6.20~ds1-1+deb12u3· arm64 · bookwormAffected
dsa · containerd · debian · bookworm; dsa · containerd · debian · 12
1.6.20~ds1-1+deb12u2· amd64 · bookworm-securityAffected
dsa · containerd · debian · bookworm; dsa · containerd · debian · 12
1.6.20~ds1-1+deb12u2· arm64 · bookworm-securityAffected
dsa · containerd · debian · bookworm; dsa · containerd · debian · 12
- [golang-github-containerd-containerd-dev]Affected
Source package: [containerd]
Details (4)
1.6.20~ds1-1+deb12u3· all · bookwormAffected
dsa · containerd · debian · bookworm; dsa · containerd · debian · 12
1.6.20~ds1-1+deb12u3· all · bookwormAffected
dsa · containerd · debian · bookworm; dsa · containerd · debian · 12
1.6.20~ds1-1+deb12u2· all · bookworm-securityAffected
dsa · containerd · debian · bookworm; dsa · containerd · debian · 12
1.6.20~ds1-1+deb12u2· all · bookworm-securityAffected
dsa · containerd · debian · bookworm; dsa · containerd · debian · 12
[Debian 13 (Trixie)]
- [containerd]Affected
Details (4)
1.7.24~ds1-6+deb13u1· amd64 · trixieAffected
dsa · containerd · debian · 13
1.7.24~ds1-6+deb13u1· arm64 · trixieAffected
dsa · containerd · debian · 13
1.7.24~ds1-6+deb13u1· amd64 · trixie-securityAffected
dsa · containerd · debian · 13
1.7.24~ds1-6+deb13u1· arm64 · trixie-securityAffected
dsa · containerd · debian · 13
- [golang-github-containerd-containerd-dev]Affected
Source package: [containerd]
Details (4)
1.7.24~ds1-6+deb13u1· all · trixieAffected
dsa · containerd · debian · 13
1.7.24~ds1-6+deb13u1· all · trixieAffected
dsa · containerd · debian · 13
1.7.24~ds1-6+deb13u1· all · trixie-securityAffected
dsa · containerd · debian · 13
1.7.24~ds1-6+deb13u1· all · trixie-securityAffected
dsa · containerd · debian · 13
[openSUSE Tumbleweed]
Observed:
References
- [https://ftp.suse.com/pub/projects/security/csaf/opensuse-su-2026_11766-1.json]
- [https://github.com/advisories/GHSA-7jxh-36q5-gcqv]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-53495]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-53495]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2026-53495]
- [https://osv.dev/vulnerability/openSUSE-SU-2026:11766-1]
- [https://osv.dev/vulnerability/openSUSE-SU-2026:11977-1]
- [https://osv.dev/vulnerability/openSUSE-SU-2026:21835-1]
- [https://osv.dev/vulnerability/openSUSE-SU-2026:22116-1]
- [https://security-tracker.debian.org/tracker/CVE-2026-53495]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-53495.json]
- [https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-3494.json]
[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [GitHub Advisory Database] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]