irqchip/ts4800: Fix missing chained handler cleanup on remove
Key facts
- Attack vector
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- Privileges required
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- User interaction
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- Attack complexity
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- Impact type
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- Confidentiality · integrity · availability
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- Fix status
- Fixed
No CVSS vector from any source. Fix status from CNA.
Summary
In the Linux kernel, the following vulnerability has been resolved: irqchip/ts4800: Fix missing chained handler cleanup on remove The driver installs a chained handler for the parent interrupt during probe using irq_set_chained_handler_and_data(), but the remove function does not clear this handler. This leaves a dangling handler that may be called when the parent interrupt fires after the driver has been removed, potentially accessing freed memory and causing a kernel crash. Additionally, the parent_irq obtained via irq_of_parse_and_map() is not stored, making it inaccessible in the remove function. Moreover, interrupt mappings created during probe are not properly disposed. Fix this by: - Saving parent_irq in probe - Clearing the chained handler with NULL in ts4800_ic_remove() - Disposing all IRQ mappings before domain removal to prevent resource leaks
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
Remediation
- Fix · CNA Linux (Linux) Fixed in 6.1.178, 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 →
Not affected: 5 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
Timeline
- 2026-10-02 Threatist record created from CVE-2026-72384
- 2026-10-03 Alias added: GHSA-xcpr-v9rp-m43f
References
Other 6
- https://git.kernel.org/stable/c/b5b2b2cb6a91908e6c23958c9ce6d5ba2fdb686c
- https://git.kernel.org/stable/c/e6b674dc341c6add7d85bec2ec22caf1aad35795
- https://git.kernel.org/stable/c/3f31f49afffa169cd01e6c37568c4df3eb1051af
- https://git.kernel.org/stable/c/4e8d498d32b6c67d73bb8b317ff316ff37897a3e
- https://git.kernel.org/stable/c/9ed0dca2aa05908b33ecf0bb15c7953947529542
- https://git.kernel.org/stable/c/98bf7e54cec07d514b3575c11896a8b12d50ecc4
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Sources
- CVE-2026-72384 · CVE Program
- CVE-2026-72384 · NVD
- FIRST EPSS
- GHSA-xcpr-v9rp-m43f · GitHub Advisory Database · CC BY 4.0
- CVE-2026-72384 · Red Hat security data · CC BY 4.0
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