| From bippy-1.2.0 Mon Sep 17 00:00:00 2001 |
| From: Greg Kroah-Hartman <gregkh@kernel.org> |
| To: <linux-cve-announce@vger.kernel.org> |
| Reply-to: <cve@kernel.org>, <linux-kernel@vger.kernel.org> |
| Subject: CVE-2025-22116: idpf: check error for register_netdev() on init |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| idpf: check error for register_netdev() on init |
| |
| Current init logic ignores the error code from register_netdev(), |
| which will cause WARN_ON() on attempt to unregister it, if there was one, |
| and there is no info for the user that the creation of the netdev failed. |
| |
| WARNING: CPU: 89 PID: 6902 at net/core/dev.c:11512 unregister_netdevice_many_notify+0x211/0x1a10 |
| ... |
| [ 3707.563641] unregister_netdev+0x1c/0x30 |
| [ 3707.563656] idpf_vport_dealloc+0x5cf/0xce0 [idpf] |
| [ 3707.563684] idpf_deinit_task+0xef/0x160 [idpf] |
| [ 3707.563712] idpf_vc_core_deinit+0x84/0x320 [idpf] |
| [ 3707.563739] idpf_remove+0xbf/0x780 [idpf] |
| [ 3707.563769] pci_device_remove+0xab/0x1e0 |
| [ 3707.563786] device_release_driver_internal+0x371/0x530 |
| [ 3707.563803] driver_detach+0xbf/0x180 |
| [ 3707.563816] bus_remove_driver+0x11b/0x2a0 |
| [ 3707.563829] pci_unregister_driver+0x2a/0x250 |
| |
| Introduce an error check and log the vport number and error code. |
| On removal make sure to check VPORT_REG_NETDEV flag prior to calling |
| unregister and free on the netdev. |
| |
| Add local variables for idx, vport_config and netdev for readability. |
| |
| The Linux kernel CVE team has assigned CVE-2025-22116 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 6.7 with commit 0fe45467a1041ea3657a7fa3a791c84c104fbd34 and fixed in 6.14.2 with commit 89768e33752211b2240ec4c34138170c95f11f97 |
| Issue introduced in 6.7 with commit 0fe45467a1041ea3657a7fa3a791c84c104fbd34 and fixed in 6.15 with commit 680811c67906191b237bbafe7dabbbad64649b39 |
| |
| Please see https://www.kernel.org for a full list of currently supported |
| kernel versions by the kernel community. |
| |
| Unaffected versions might change over time as fixes are backported to |
| older supported kernel versions. The official CVE entry at |
| https://cve.org/CVERecord/?id=CVE-2025-22116 |
| will be updated if fixes are backported, please check that for the most |
| up to date information about this issue. |
| |
| |
| Affected files |
| ============== |
| |
| The file(s) affected by this issue are: |
| drivers/net/ethernet/intel/idpf/idpf_lib.c |
| |
| |
| Mitigation |
| ========== |
| |
| The Linux kernel CVE team recommends that you update to the latest |
| stable kernel version for this, and many other bugfixes. Individual |
| changes are never tested alone, but rather are part of a larger kernel |
| release. Cherry-picking individual commits is not recommended or |
| supported by the Linux kernel community at all. If however, updating to |
| the latest release is impossible, the individual changes to resolve this |
| issue can be found at these commits: |
| https://git.kernel.org/stable/c/89768e33752211b2240ec4c34138170c95f11f97 |
| https://git.kernel.org/stable/c/680811c67906191b237bbafe7dabbbad64649b39 |
