Description (CNA)
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 (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before ef394eeb9d5ec6db8d979eec6d27f56c2ebc6523; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 3d9617d856ebddcdddbab0ce877c397420f59f55; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 897e289db1e4d00ca6419cfe733c646492147270; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before f4834132773f15ffb255127499c8443947fa7d0f; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before b9e2ff70e96acf83693b27987e0390bad9f83efa; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 59cbe6cfa0fa23c192351cc284e30707309f6741; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 2fe22d58b3797d741570f9873b26653fd511576c; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 91957b89da995607cb654b1f9a3c126ddbaee10f |
| Linux / Linux | affected 2.6.12; unaffected 0 before 2.6.12; unaffected 5.10.265 through 5.10.*; unaffected 5.15.216 through 5.15.*; unaffected 6.1.183 through 6.1.*; unaffected 6.6.148 through 6.6.*; unaffected 6.12.101 through 6.12.*; unaffected 6.18.42 through 6.18.*; unaffected 7.1.6 through 7.1.*; unaffected 7.2 through * |
CWE
No CWE identifiers supplied.
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