CVE-2025-39814
ice: fix NULL pointer dereference in ice_unplug_aux_dev() on reset
Reported by linux · Published September 16, 2025
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().
Fixed versions
Upgrade to a fixed version or later. Language registries are listed first, then Linux distributions, then vendor products.
| Package | Ecosystem | Fixed in |
|---|---|---|
| Linux | Linux | db783756a7d7cfaea039411971d0dc0a374e85cb |
Risk scores
Affected products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | c24a65b6a27c78d8540409800886b6622ea86ebf, c24a65b6a27c78d8540409800886b6622ea86ebf |
| Linux | Linux | 6.16, 0, 6.16.5 |
| Linux | Linux | *, 6.16.5, 6.17 |
| linux | linux_kernel | 6.16, 6.16 |
Timeline
- Sep 16, 2025 CVE Published
- Sep 17, 2025 EPSS Score (30 in total, the first dated here)
- Oct 4, 2025 Coalition ESS Score (11 in total, the first dated here)
- Dec 15, 2025 Security Advisory (87 in total, the first dated here)
- Dec 15, 2025 CVE Updated
- Dec 16, 2025 PoC Published
- Oct 7, 2026 Distribution Patch (76 in total, the first dated here)
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