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    CVE-2022-0492

    A vulnerability was found in the Linux kernel’s cgroup_release_agent_write in the kernel/cgroup/cgroup-v1.c function. This flaw, under certain circumstances, allows the use of the cgroups v1 release_agent feature to escalate privileges and bypass the namespace isolation unexpectedly.

    Published:Feb 7, 2022
    Last Modified:Jun 3, 2026
    EPS:Mar 3, 2022
    EPSS Score:0.26341
    CVSS Score:7.8

    CISA Notification

    Description

    A vulnerability was found in the Linux kernel’s cgroup_release_agent_write in the kernel/cgroup/cgroup-v1.c function. This flaw, under certain circumstances, allows the use of the cgroups v1 release_agent feature to escalate privileges and bypass the namespace isolation unexpectedly.

    Required Action:

    Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

    Notes:

    No extra notes provided.

    Due Date
    Jun 5, 2026
    98 days ago
    Alert Date
    Jun 2, 2026
    101 days ago

    Affected Products

    Vendor
    Canonical
    Product
    Ubuntu Linux
    Vendor
    Debian
    Product
    Debian Linux
    Vendor
    Fedoraproject
    Product
    Fedora
    Vendor
    Linux
    Product
    Linux Kernel
    Vendor
    Netapp
    Product
    Bootstrap Os
    Vendor
    Netapp
    Product
    H300s
    Vendor
    Netapp
    Product
    H300s Firmware
    Vendor
    Netapp
    Product
    H410c
    Vendor
    Netapp
    Product
    H410c Firmware
    Vendor
    Netapp
    Product
    H410s
    Vendor
    Netapp
    Product
    H410s Firmware
    Vendor
    Netapp
    Product
    H500s
    Vendor
    Netapp
    Product
    H500s Firmware
    Vendor
    Netapp
    Product
    H700s
    Vendor
    Netapp
    Product
    H700s Firmware
    Vendor
    Netapp
    Product
    Hci Compute Node
    Vendor
    Netapp
    Product
    Solidfire\, Enterprise Sds \& Hci Storage Node
    Vendor
    Netapp
    Product
    Solidfire \& Hci Management Node
    Vendor
    Redhat
    Product
    Codeready Linux Builder
    Vendor
    Redhat
    Product
    Codeready Linux Builder For Power Little Endian
    Vendor
    Redhat
    Product
    Enterprise Linux
    Vendor
    Redhat
    Product
    Enterprise Linux Eus
    Vendor
    Redhat
    Product
    Enterprise Linux For Ibm Z Systems
    Vendor
    Redhat
    Product
    Enterprise Linux For Ibm Z Systems Eus
    Vendor
    Redhat
    Product
    Enterprise Linux For Power Little Endian
    Vendor
    Redhat
    Product
    Enterprise Linux For Power Little Endian Eus
    Vendor
    Redhat
    Product
    Enterprise Linux For Real Time For Nfv Tus
    Vendor
    Redhat
    Product
    Enterprise Linux For Real Time Tus
    Vendor
    Redhat
    Product
    Enterprise Linux Server Aus
    Vendor
    Redhat
    Product
    Enterprise Linux Server For Power Little Endian Update Services For Sap Solutions
    Vendor
    Redhat
    Product
    Enterprise Linux Server Tus
    Vendor
    Redhat
    Product
    Enterprise Linux Server Update Services For Sap Solutions
    Vendor
    Redhat
    Product
    Rhel Aus
    Vendor
    Redhat
    Product
    Rhel E4s
    Vendor
    Redhat
    Product
    Rhel Els
    Vendor
    Redhat
    Product
    Rhel Eus
    Vendor
    Redhat
    Product
    Rhel Extras Rt
    Vendor
    Redhat
    Product
    Rhel Tus
    Vendor
    Redhat
    Product
    Virtualization Host

    Exploits

    http://packetstormsecurity.com/files/176099/Docker-cgroups-Container-Escape.htmlhttp://packetstormsecurity.com/files/176099/Docker-cgroups-Container-Escape.htmlhttps://github.com/bb33bb/CVE-2022-0492https://github.com/chenaotian/CVE-2022-0492https://github.com/KianaBin/CVE-2022-0492-Container-Escapehttps://github.com/PaloAltoNetworks/can-ctr-escape-cve-2022-0492https://github.com/Perimora/cve_2022_0492https://github.com/smallcat9612/CVE-2022-0492-Docker-Breakout-Checker-and-PoChttps://github.com/SofianeHamlaoui/CVE-2022-0492-Checkerhttps://github.com/T1erno/CVE-2022-0492-Docker-Breakout-Checker-and-PoChttps://github.com/Trinadh465/device_renesas_kernel_AOSP10_r33_CVE-2022-0492https://github.com/yoeelingBin/CVE-2022-0492-Container-Escape

    Related CVEs

    CVE-2026-13476 (CVSS 7.3) — IBM Informix Dynamic Server 14.10, 15.0, and 12.10 could allow an unauthenticated user to execute arbitrary co…
    CVE-2026-13367 (CVSS 7.8) — IBM Informix Dynamic Server 14.10, and 15.0 contain a local privilege escalation vulnerability in the oninit s…
    CVE-2026-47337 (CVSS 3.3) — Ubuntu Linux 6.8, 6.17 and 7.0 contain SAUCE patches with a possible NULL pointer dereference in the handling …
    CVE-2026-47336 (CVSS 3.3) — Ubuntu Linux 6.8 contains SAUCE patches with a possible use of an uninitialized variable in AppArmor AF_INET/A…
    CVE-2026-47335 (CVSS 5.5) — Ubuntu Linux 6.8 contains SAUCE patches with a possible NULL pointer dereference in the handling of AppArmor n…
    CVE-2026-47334 (CVSS 5.5) — Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which incorrectly sleep while holding a spinlock…
    CVE-2026-47333 (CVSS 7.8) — Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which can potentially incorrectly compute the si…
    CVE-2026-47332 (CVSS 5.5) — Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which incorrectly validate the size of an intern…
    CVE-2026-47331 (CVSS 7.8) — Ubuntu Linux 6.8 contains AppArmor SAUCE patches which fail to acquire a lock when modifying a linked list. An…
    CVE-2026-47330 (CVSS 3.3) — Ubuntu Linux 6.8, 7.17 and 7.0 contain AppArmor SAUCE patches which can, under certain circumstances, use an u…

    References

    http://packetstormsecurity.com/files/166444/Kernel-Live-Patch-Security-Notice-LSN-0085-1.html
    http://packetstormsecurity.com/files/167386/Kernel-Live-Patch-Security-Notice-LSN-0086-1.html
    http://packetstormsecurity.com/files/176099/Docker-cgroups-Container-Escape.html
    https://bugzilla.redhat.com/show_bug.cgi?id=2051505
    https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=24f6008564183aa120d07c03d9289519c2fe02af
    https://lists.debian.org/debian-lts-announce/2022/03/msg00011.html
    https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html
    https://security.netapp.com/advisory/ntap-20220419-0002/
    https://www.debian.org/security/2022/dsa-5095
    https://www.debian.org/security/2022/dsa-5096
    http://packetstormsecurity.com/files/166444/Kernel-Live-Patch-Security-Notice-LSN-0085-1.html
    http://packetstormsecurity.com/files/167386/Kernel-Live-Patch-Security-Notice-LSN-0086-1.html
    http://packetstormsecurity.com/files/176099/Docker-cgroups-Container-Escape.html
    https://bugzilla.redhat.com/show_bug.cgi?id=2051505
    https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=24f6008564183aa120d07c03d9289519c2fe02af
    https://lists.debian.org/debian-lts-announce/2022/03/msg00011.html
    https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html
    https://security.netapp.com/advisory/ntap-20220419-0002/
    https://www.debian.org/security/2022/dsa-5095
    https://www.debian.org/security/2022/dsa-5096
    https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-0492

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High