Description (CNA)
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().
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected c24a65b6a27c78d8540409800886b6622ea86ebf before db783756a7d7cfaea039411971d0dc0a374e85cb; affected c24a65b6a27c78d8540409800886b6622ea86ebf before 60dfe2434eed13082f26eb7409665dfafb38fa51 |
| Linux / Linux | affected 6.16; unaffected 0 before 6.16; unaffected 6.16.5 through 6.16.*; unaffected 6.17 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/db783756a7d7cfaea039411971d0dc0a374e85cb
- https://git.kernel.org/stable/c/60dfe2434eed13082f26eb7409665dfafb38fa51
ADP enrichment
No English description supplied.
No references supplied.