s390/perf_cpum_cf: Add missing array_index_nospec() to __hw_perf_event_init()
Priority LOW 22Published · Updated
Key facts
- Attack vector
- —
- Privileges required
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- User interaction
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- Attack complexity
- —
- Impact type
- —
- Confidentiality · integrity · availability
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- Fix status
- Partial Red Hat: 5 without a fix
No CVSS vector from any source. Fix status from CNA and Red Hat.
Summary
In the Linux kernel, the following vulnerability has been resolved: s390/perf_cpum_cf: Add missing array_index_nospec() to __hw_perf_event_init() ev variable is userspace controlled via event->attr.config and used as an array index after bounds checking, but without speculation barriers. Add the missing array_index_nospec() call to prevent speculative execution.
Why it matters now
EPSS 0.00227 13th percentileScored 2026-11-07
Fix Partial Linux (Linux): 6.1.184, 6.6.145, 6.12.97 +3Red Hat: 5 without a fix
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
Remediation
- Fix · CNA Linux (Linux) Fixed in 6.1.184, 6.6.145, 6.12.97, 6.18.40, 7.1.5, 7.2
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 10 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 6 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux 7 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 8 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 9 | Affected | No fix yet: Fix deferred |
Timeline
- 2026-10-02 Threatist record created from CVE-2026-72236
- 2026-10-03 Alias added: GHSA-54pj-2wqr-j294
References
Other 6
- https://git.kernel.org/stable/c/4c249b214c686f9a1c4cf4f32893b59b189e897a
- https://git.kernel.org/stable/c/27206bb57c47bdbe33bccc78fa7f7e2a719a06b9
- https://git.kernel.org/stable/c/a21f3615c88421df81060b6ff89220fd34094c4d
- https://git.kernel.org/stable/c/fa1ebae4206e6afc8caa642e9eb1bbe39a9a724f
- https://git.kernel.org/stable/c/f79dff8c721bbb1f3fc312ea55e0551c2cc28801
- https://git.kernel.org/stable/c/49145bce539117db4b6e9e83c0e5ef528e361050
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Sources
- CVE-2026-72236 · CVE Program
- CVE-2026-72236 · NVD
- FIRST EPSS
- GHSA-54pj-2wqr-j294 · GitHub Advisory Database · CC BY 4.0
- CVE-2026-72236 · Red Hat security data · CC BY 4.0
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