CVE-2025-39814 (GCVE-0-2025-39814)
Vulnerability from cvelistv5
Published
2025-09-16 13:00
Modified
2025-09-29 05:59
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: ice: fix NULL pointer dereference in ice_unplug_aux_dev() on reset Issuing a reset when the driver is loaded without RDMA support, will results in a crash as it attempts to remove RDMA's non-existent auxbus device: echo 1 > /sys/class/net/<if>/device/reset BUG: kernel NULL pointer dereference, address: 0000000000000008 ... RIP: 0010:ice_unplug_aux_dev+0x29/0x70 [ice] ... Call Trace: <TASK> ice_prepare_for_reset+0x77/0x260 [ice] pci_dev_save_and_disable+0x2c/0x70 pci_reset_function+0x88/0x130 reset_store+0x5a/0xa0 kernfs_fop_write_iter+0x15e/0x210 vfs_write+0x273/0x520 ksys_write+0x6b/0xe0 do_syscall_64+0x79/0x3b0 entry_SYSCALL_64_after_hwframe+0x76/0x7e ice_unplug_aux_dev() checks pf->cdev_info->adev for NULL pointer, but pf->cdev_info will also be NULL, leading to the deref in the trace above. Introduce a flag to be set when the creation of the auxbus device is successful, to avoid multiple NULL pointer checks in ice_unplug_aux_dev().
References
Impacted products
Vendor Product Version
Linux Linux Version: c24a65b6a27c78d8540409800886b6622ea86ebf
Version: c24a65b6a27c78d8540409800886b6622ea86ebf
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{
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          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/intel/ice/ice.h",
            "drivers/net/ethernet/intel/ice/ice_idc.c"
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nice: fix NULL pointer dereference in ice_unplug_aux_dev() on reset\n\nIssuing a reset when the driver is loaded without RDMA support, will\nresults in a crash as it attempts to remove RDMA\u0027s non-existent auxbus\ndevice:\necho 1 \u003e /sys/class/net/\u003cif\u003e/device/reset\n\nBUG: kernel NULL pointer dereference, address: 0000000000000008\n...\nRIP: 0010:ice_unplug_aux_dev+0x29/0x70 [ice]\n...\nCall Trace:\n\u003cTASK\u003e\nice_prepare_for_reset+0x77/0x260 [ice]\npci_dev_save_and_disable+0x2c/0x70\npci_reset_function+0x88/0x130\nreset_store+0x5a/0xa0\nkernfs_fop_write_iter+0x15e/0x210\nvfs_write+0x273/0x520\nksys_write+0x6b/0xe0\ndo_syscall_64+0x79/0x3b0\nentry_SYSCALL_64_after_hwframe+0x76/0x7e\n\nice_unplug_aux_dev() checks pf-\u003ecdev_info-\u003eadev for NULL pointer, but\npf-\u003ecdev_info will also be NULL, leading to the deref in the trace above.\n\nIntroduce a flag to be set when the creation of the auxbus device is\nsuccessful, to avoid multiple NULL pointer checks in ice_unplug_aux_dev()."
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        "dateUpdated": "2025-09-29T05:59:58.675Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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    "datePublished": "2025-09-16T13:00:15.552Z",
    "dateReserved": "2025-04-16T07:20:57.138Z",
    "dateUpdated": "2025-09-29T05:59:58.675Z",
    "state": "PUBLISHED"
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  }
}


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