CVE-2026-68327
Last modified
CVE-2026-68327 is a vulnerability of currently unknown severity. 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.
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.
Affected Software
Source: CNA advisory (CVE.org). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < f4834132773f15ffb255127499c8443947fa7d0f; >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < b9e2ff70e96acf83693b27987e0390bad9f83efa; >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 59cbe6cfa0fa23c192351cc284e30707309f6741; >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 2fe22d58b3797d741570f9873b26653fd511576c; >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 91957b89da995607cb654b1f9a3c126ddbaee10f |
| Linux | Linux | 2.6.12 |
References
Timeline
- Published
- Last Modified
- Status
- Received
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