CVE-2021-4154
HIGH
8.8
CVSS Score
Published: February 4, 2022 at 10:29 PM UTC
Updated: June 17, 2026 at 04:19 AM UTC
5 products affected across 3 vendorsLinux KernelEnterprise LinuxVirtualization
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Severity
HIGH8.8
Exploit prediction
EPSS 1%
Description
A use-after-free flaw was found in cgroup1_parse_param in kernel/cgroup/cgroup-v1.c in the Linux kernel's cgroup v1 parser. A local attacker with a user privilege could cause a privilege escalation by exploiting the fsconfig syscall parameter leading to a container breakout and a denial of service on the system.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Affected range stops below 5.10.52, so it looks safe — our inference, not a vendor statement
Affected range stops below 5.12.19, so it looks safe — our inference, not a vendor statement
Affected range stops below 5.13.4, so it looks safe — our inference, not a vendor statement
Affected range stops below 5.4.134, so it looks safe — our inference, not a vendor statement
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
References (4)
x_refsource_MISCIssue TrackingPatchThird Party Advisory
Source: [email protected]
https://bugzilla.redhat.com/show_bug.cgi?id=2034514x_refsource_MISCThird Party Advisory
Source: [email protected]
https://cloud.google.com/anthos/clusters/docs/security-bulletins#gcp-2022-002x_refsource_MISCMailing ListPatchVendor Advisory
Source: [email protected]
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3b0462726e7ef281c35a7a4ae33e93ee2bc9975bx_refsource_CONFIRMThird Party Advisory
Source: [email protected]
https://security.netapp.com/advisory/ntap-20220225-0004/CVSS
- Attack Vector
- LOCAL
- Complexity
- LOW
- Privileges
- LOW
- User Interaction
- NONE
- Scope
- CHANGED
- Confidentiality
- HIGH
- Integrity
- HIGH
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-416
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