CVE-2026-74753: perf: Reject exited events as group leaders
CSIRTS triage
- What
- Perf allows exited events to be used as group leaders, causing invalid state handling.
- Who is affected
- Systems using the perf subsystem in the Linux kernel.
- Urgency
- Medium severity (CVSS 5.5); unexloited but can lead to denial of service.
- Action
- Apply kernel patches addressing CVE-2026-74753 when available from your distribution.
AI-assisted analysis generated from the source advisory — verify against the original.
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Details
Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-74753
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-2026-747530.13% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 3% of all EPSS-scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-74753 | coverage & exploitation status | NVD · CVE.org |
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