Early IRQ handler in Linux kernel rtc spear driver
Key facts
- Attack vector
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- 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
- Fixed
No CVSS vector from any source. Fix status from CNA.
Summary
The rtc spear driver in the Linux kernel is affected from 3.0 before the fixed versions listed in the solution. The devm_request_irq() call enables the alarm interrupt before probe finishes setting up the MMIO address and spinlock, so the interrupt handler can run on uninitialized state.
Written with Claude Haiku 5.5 from the sources below · 2026-11-06
Description from the CNA
In the Linux kernel, the following vulnerability has been resolved: rtc: spear: initialize IRQ state before requesting alarm IRQ devm_request_irq() enables the interrupt before it returns, so the handler may run while probe is still initializing the device. Initialize the MMIO address and spinlock before requesting the alarm IRQ.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
Remediation
Update the Linux kernel to 5.10.273, 5.15.224, 6.1.191, 6.6.160, 6.12.113, 6.18.56, 7.2.10 or 7.3, depending on the branch in use.
Written with Claude Haiku 5.5 from the sources below · 2026-11-06
- Fix · CNA Linux (Linux) Fixed in 5.10.273, 5.15.224, 6.1.191, 6.6.160, 6.12.113, 6.18.56, 7.2.10, 7.3
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
Not affected: 7 products
- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
- Red Hat OpenShift Container Platform 4
- Red Hat OpenShift Container Platform 5
Timeline
- 2026-10-18 Threatist record created from CVE-2026-98847
- 2026-10-18 Alias added: GHSA-8gmj-mrfm-vm8g
- 2026-10-19 Fix available: Linux/[email protected] · CNA
- 2026-10-21 Fix available: Linux/[email protected], Linux/Linux@aeda50d645bbb55241be840602e338b3a16c24ca · CNA
- 2026-10-21 1 new reference · CNA
- 2026-10-24 Affected versions changed · Red Hat
- 2026-10-24 CVSS score added · Red Hat
- 2026-10-30 Fix available: Linux/Linux@0d4144e7d6cc5ed266dbef8eb25b602314d3e245, Linux/[email protected], Linux/[email protected] +3 · CNA
- 2026-10-30 3 new references · CNA
- 2026-11-06 Affected versions changed · Red Hat
References
Other 8
- https://git.kernel.org/stable/c/709edb317ec4a1429dfa1bf41577aa03d7b147c1
- https://git.kernel.org/stable/c/0d4144e7d6cc5ed266dbef8eb25b602314d3e245
- https://git.kernel.org/stable/c/ca8b230188f6a5ad8d47c751d1213b2062679c9d
- https://git.kernel.org/stable/c/aeda50d645bbb55241be840602e338b3a16c24ca
- https://git.kernel.org/stable/c/c02aa67ea34a826c2cb1aa65d77cf32fafb7eec3
- https://git.kernel.org/stable/c/e0cabda9b6f4dd276c55c40bdbb251e8507ae60e
- https://git.kernel.org/stable/c/cb6d6a7fbff0414b9eed505d17687b4b7e38fee8
- https://git.kernel.org/stable/c/055ef5ce9f67a6a3a1363fa663007f8196cc0fb8
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Sources
- CVE-2026-98847 · CVE Program
- CVE-2026-98847 · NVD
- FIRST EPSS
- GHSA-8gmj-mrfm-vm8g · GitHub Advisory Database · CC BY 4.0
- CVE-2026-98847 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences