LiveActive security incident?Get immediate response
CVE Record

CVE-2022-50562: tpm: acpi: Call acpi_put_table() to fix memory leak

In the Linux kernel, the following vulnerability has been resolved: tpm: acpi: Call acpi_put_table() to fix memory leak The start and length of the event log area are obtained from TPM2 or TCPA table, so we call acpi_get_table() to get the ACPI information, but the acpi_get_table() should be coupled with acpi_put_table() to release the ACPI memory, add the acpi_put_table() properly to fix the memory leak. While we are at it, remove the redundant empty line at the end of the tpm_read_log_acpi().

UnknownCVSS not scoredNot KEV-listedUpdated
Discuss exposureBack to CVEs
Glexia's TakeAutomated analysislow

Security readout for executives and security teams

Plain-English summary

CVE-2022-50562 is a Linux kernel memory leak in TPM ACPI event-log handling. The kernel obtains ACPI TPM table data but did not release it correctly. Sources do not provide a CVSS score, active exploitation evidence, or a direct business-impact assessment. Treat this mainly as a kernel maintenance issue unless your environment depends heavily on TPM/ACPI behavior at scale.

Executive priority

Low immediate urgency based on available evidence. Include it in routine kernel patch cycles, especially for fleets using TPM features. Escalate only if a vendor rates it higher for your specific platform.

Technical view

The resolved Linux kernel issue adds acpi_put_table() after acpi_get_table() in tpm_read_log_acpi() for TPM2/TCPA ACPI tables. Without the paired release, ACPI table references can leak memory. The source bundle lists affected Linux versions including 4.18, 5.10.163, 5.15.87, 6.0.17, 6.1.3, and 6.2, with stable kernel commits referenced.

Likely exposure

Exposure is most relevant to Linux systems using TPM ACPI event-log code paths. The available sources do not describe remote reachability, privilege requirements, or practical exploitability. Systems running vendor kernels should be assessed by vendor advisory status, not upstream version alone.

Exploitation context

No active exploitation is indicated in the provided sources, and the CVE is not marked as CISA KEV. The public description frames this as a memory leak fix, not a demonstrated compromise path. Exploitability details are incomplete.

Researcher notes

The record lacks CVSS, CWE, detailed affected-version ranges, and exploitability analysis. The key technical evidence is the upstream stable fix pairing acpi_get_table() with acpi_put_table(). Avoid assuming denial-of-service impact beyond the stated memory leak without further vendor analysis.

Mitigation direction

  • Review your Linux vendor’s advisory or kernel changelog for CVE-2022-50562 coverage.
  • Prioritize kernel updates that include the referenced stable commits.
  • Apply normal kernel update testing before production rollout.
  • If updates are unavailable, ask the vendor for supported mitigation guidance.

Validation and detection

  • Inventory Linux kernel versions across servers, endpoints, appliances, and embedded systems.
  • Check whether vendor kernel packages include the TPM ACPI memory leak fix.
  • Map affected assets that use TPM or measured boot features.
  • Confirm remediation through vendor package metadata or upstream commit inclusion.
Prepared
Confidence
medium
Sources
7

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.

cve · low confidence lookup

CVE-2022-50562 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

Open ATT&CK lookup
Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors
3Timeline events
0ADP providers
6Source links

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

  1. CVE reservedCVE Program

    The CVE ID was reserved by the assigning CNA.

  2. CVE publishedCVE Program

    The CVE record was published.

  3. CVE updatedCVE Program

    The CVE record metadata indicates this as the latest update time.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
LinuxLinux0bfb23746052168620c5b52f49d8a47c3bb022fa, 0bfb23746052168620c5b52f49d8a47c3bb022fa, 0bfb23746052168620c5b52f49d8a47c3bb022fa, 0bfb23746052168620c5b52f49d8a47c3bb022fa, 0bfb23746052168620c5b52f49d8a47c3bb022faunaffected
LinuxLinux4.18, 0, 5.10.163, 5.15.87, 6.0.17, 6.1.3, 6.2affected
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.