# CVE-2026-80732: ata: pata_sl82c105: fix bridge revision use-after-free

CVE-2026-80732 is fixed in 2 products on 1 platform, first by DEBIAN-CVE-2026-80732, released September 4, 2026. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2026-80732
- Priority: High
- CVSS: 7.8 (Moderate)
- EPSS: 0.0017
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Sep 3, 2026
- Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-80732

## Description

In the Linux kernel, the following vulnerability has been resolved:  ata: pata_sl82c105: fix bridge revision use-after-free  pci_get_slot() returns a referenced PCI device. Commit 44c10138fd4b ("PCI: Change all drivers to use pci_device->revision") replaced a configuration-space read with direct access to the cached revision field, but left that access after pci_dev_put(). The bridge may therefore be freed before its revision is read.  Read the revision before dropping the reference.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 12.15 (bookworm) | 6.1.187-1 | [DEBIAN-CVE-2026-80732](https://patchblox.com/security/data/fix/linux/debian-cve-2026-80732.md) | Sep 4, 2026 |
| Linux | linux Debian 13.5 (trixie) | 6.12.105-1 | [DEBIAN-CVE-2026-80732](https://patchblox.com/security/data/fix/linux/debian-cve-2026-80732.md) | Sep 4, 2026 |
| Linux | linux Debian 14 | 7.1.9-1 | [DEBIAN-CVE-2026-80732](https://patchblox.com/security/data/fix/linux/debian-cve-2026-80732.md) | Sep 4, 2026 |
| Linux | linux-6.12 Debian 12.15 (bookworm) | 6.12.107-1~deb12u1 | [DEBIAN-CVE-2026-80732](https://patchblox.com/security/data/fix/linux/debian-cve-2026-80732.md) | Sep 4, 2026 |

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Data as of 2026-11-08T13:06:02Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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