CVE-2026-53126: blk-cgroup: fix disk reference leak in blkcg_maybe_throttle_current()
CSIRTS triage
- What
- A disk reference leak vulnerability exists in blk-cgroup's throttling function.
- Who is affected
- Systems using blk-cgroup are affected by this vulnerability.
- Urgency
- Remediation is medium priority due to the CVSS score of 5.5 indicating moderate risk.
- Action
- Apply the relevant updates to address CVE-2026-53126.
AI-assisted analysis generated from the source advisory — verify against the original.
Details
Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-53126
Exploitation outlook
EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.
- Low exploitation riskCVE-2026-531260.16% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 5% of all scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-53126 | coverage & exploitation status | NVD · CVE.org |
Same CVEs, other sources
How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.
- unknownMultiple vulnerabilities in Microsoft Azure Linux (July 10, 2026)cert-fr-avis
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