CVE intelligence and bounded remediation
CVE-2022-33746 — P2M pool freeing may take excessively long The P2M pool backing second level address translation for guests may be of significant size
Medium
CVSS 6.5
P2M pool freeing may take excessively long The P2M pool backing second level address translation for guests may be of significant size. Therefore its freeing may take more time than is reasonable without intermediate preemption checks. Such checking for the need to preempt was so far missing.
- Severity
- Medium
- CVSS
- 6.5 (3.1)
- Published
- 2022-10-11
- CISA KEV
- Not currently listed
- Ecosystem
- operating-system
- Weaknesses
- CWE-404
Affected products
- xen / xen
- fedoraproject / fedora / 35
- fedoraproject / fedora / 36
- fedoraproject / fedora / 37
- debian / debian_linux / 11.0
Matched remediation archetype
Resource exhaustion and denial of service
This catalog composition supplies bounded fallback guidance. Explicitly reviewed curated workflows load with the complete record below.
Check exposure
- Identify attacker-influenced work factors including input size, nesting, compression, fan-out, regex cost, allocation, recursion, retries, and connection lifetime.
- Map per-request and shared CPU, memory, disk, descriptor, thread, queue, and downstream-service limits.
- Determine whether authentication, tenancy, quotas, and rate controls apply before expensive processing begins.
Remediate safely
- Bound input size, nesting, expansion, work, concurrency, queue depth, retries, and execution time before resource-intensive processing.
- Release resources on every success, error, cancellation, and timeout path and use backpressure instead of unbounded buffering.
- Update affected components and add small deterministic tests that assert resource ceilings rather than exhausting a host.
Authoritative sources
Complete CVE record and remediation plan
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