# CVE-2026-63798: linux: In the Linux kernel, the following vulnerability has been resolved:  irqchip/imgpdc: Fix resource leak, add missing c...

CVE-2026-63798 is fixed in linux on 1 platform, first by DEBIAN-CVE-2026-63798, released July 20, 2026. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2026-63798
- Priority: Routine
- CVSS: 5.5 (medium)
- EPSS: 0.0013
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jul 19, 2026

## Description

In the Linux kernel, the following vulnerability has been resolved:  irqchip/imgpdc: Fix resource leak, add missing chained handler cleanup on remove  The driver allocates domain generic chips using irq_alloc_domain_generic_chips() during probe and sets up chained handlers using irq_set_chained_handler_and_data(). However, on driver removal, the generic chips are not freed and the chained handlers are not removed.  The generic chips remain on the global gc_list and may later be accessed by generic interrupt chip suspend, resume, or shutdown callbacks after the driver has been removed, potentially resulting in a use-after-free and kernel crash.  The chained handlers that were installed in probe for peripheral and syswake interrupts are also left dangling, which can lead to spurious interrupts accessing freed memory.  Fix these issues by:    - Setting IRQ_DOMAIN_FLAG_DESTROY_GC flag in domain->flags, so the     core code automatically removes generic chips when irq_domain_remove()     is called    - Clearing all chained handlers with NULL in pdc_intc_remove()

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 12.15 (bookworm) | 6.1.177-1 | [DEBIAN-CVE-2026-63798](https://patchblox.com/security/data/fix/linux/debian-cve-2026-63798.md) | Jul 20, 2026 |
| Linux | linux Debian 13.5 (trixie) | 6.12.95-1 | [DEBIAN-CVE-2026-63798](https://patchblox.com/security/data/fix/linux/debian-cve-2026-63798.md) | Jul 20, 2026 |
| Linux | linux Debian 14 | 7.1.3-1 | [DEBIAN-CVE-2026-63798](https://patchblox.com/security/data/fix/linux/debian-cve-2026-63798.md) | Jul 20, 2026 |

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Data as of 2026-11-09T19:38:12Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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