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CVE Record

CVE-2024-26655: Fix memory leak in posix_clock_open()

In the Linux kernel, the following vulnerability has been resolved: Fix memory leak in posix_clock_open() If the clk ops.open() function returns an error, we don't release the pccontext we allocated for this clock. Re-organize the code slightly to make it all more obvious.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

CVE-2024-26655 is a Linux kernel memory leak in posix_clock_open(). If a clock open operation fails, allocated kernel context was not released. The sources do not provide a CVSS score, confirmed impact level, or active exploitation evidence.

Executive priority

Treat this as routine kernel hygiene unless your environment has exposed multi-tenant Linux hosts or strict availability requirements. No source indicates active exploitation or critical severity, but kernel memory leaks can affect reliability.

Technical view

The bug is in Linux posix_clock_open(): when clk ops.open() returns an error, the allocated pccontext is not freed. Kernel stable commits reorganize the error path to release that context. The provided record lists Linux kernel versions including 6.7, 6.7.12, 6.8.3, and 6.9 as affected context, but exact range semantics are incomplete here.

Likely exposure

Exposure is limited to systems running affected Linux kernel builds containing the vulnerable posix_clock_open() error path. Internet exposure is not directly indicated; practical risk depends on whether local workloads or users can reach failing POSIX clock open paths.

Exploitation context

The source bundle does not report active exploitation, public exploit activity, or CISA KEV listing. Evidence supports a kernel memory leak fixed upstream, not a confirmed remote compromise path.

Researcher notes

The key condition is an error return from clk ops.open() after pccontext allocation in posix_clock_open(). The record lacks CVSS, CWE, exploitability analysis, and complete version-range detail, so validation should rely on downstream vendor kernel advisories and commit presence.

Mitigation direction

  • Check your distribution kernel advisories for CVE-2024-26655 coverage.
  • Update to a vendor-supported kernel containing the referenced stable fixes.
  • Prioritize shared, multi-user, container-host, and high-availability Linux systems.
  • If patching is delayed, monitor systems for unusual kernel memory pressure.

Validation and detection

  • Inventory Linux kernel versions across servers, hosts, and appliances.
  • Compare installed kernels against vendor advisories and the referenced stable commits.
  • Confirm patched kernels are booted, not only installed.
  • Review monitoring for kernel memory growth after failed clock-related operations.
Prepared
Confidence
medium
Sources
9

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

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CVE-2024-26655 mapping review

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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
2ADP providers
8Source links

SSVC decision data

CISA-ADPCISA Coordinator
Timestamp
Version
2.0.3
Exploitation: noneAutomatable: noTechnical Impact: partial

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.

ADP provider summaries

CVECVE Program Container
CISA-ADPCISA ADP Vulnrichment
other:ssvc

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
LinuxLinux63cb05f600940a3b4824509e7e0e909f040c82ee, a006fc4485159dc9bc3c4156f433f62b9c2b709c, 72ba2204a2a71b6f25873f20eb9329e1e7a01d03, 221e4d1e29bb442ac4c47bc8ee095abf009ee8f3, 60c6946675fc06dd2fd2b7a4b6fd1c1f046f1056, 60c6946675fc06dd2fd2b7a4b6fd1c1f046f1056, 60c6946675fc06dd2fd2b7a4b6fd1c1f046f1056unaffected
LinuxLinux6.7, 0, 6.7.12, 6.8.3, 6.9affected
Weakness

CWE details

No CWE listed

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