Updated: 2026-02-27 03:36:52.945235
Description:
In the Linux kernel, the following vulnerability has been resolved: ethtool: check device is present when getting link settings A sysfs reader can race with a device reset or removal, attempting to read device state when the device is not actually present. eg: [exception RIP: qed_get_current_link+17] #8 [ffffb9e4f2907c48] qede_get_link_ksettings at ffffffffc07a994a [qede] #9 [ffffb9e4f2907cd8] __rh_call_get_link_ksettings at ffffffff992b01a3 #10 [ffffb9e4f2907d38] __ethtool_get_link_ksettings at ffffffff992b04e4 #11 [ffffb9e4f2907d90] duplex_show at ffffffff99260300 #12 [ffffb9e4f2907e38] dev_attr_show at ffffffff9905a01c #13 [ffffb9e4f2907e50] sysfs_kf_seq_show at ffffffff98e0145b #14 [ffffb9e4f2907e68] seq_read at ffffffff98d902e3 #15 [ffffb9e4f2907ec8] vfs_read at ffffffff98d657d1 #16 [ffffb9e4f2907f00] ksys_read at ffffffff98d65c3f #17 [ffffb9e4f2907f38] do_syscall_64 at ffffffff98a052fb crash> struct net_device.state ffff9a9d21336000 state = 5, state 5 is __LINK_STATE_START (0b1) and __LINK_STATE_NOCARRIER (0b100). The device is not present, note lack of __LINK_STATE_PRESENT (0b10). This is the same sort of panic as observed in commit 4224cfd7fb65 ("net-sysfs: add check for netdevice being present to speed_show"). There are many other callers of __ethtool_get_link_ksettings() which don't have a device presence check. Move this check into ethtool to protect all callers.
| Links | NIST | CIRCL | RHEL | Ubuntu |
| Severity | Score | |
|---|---|---|
| CVSS Version 2.x | 0.0 | |
| CVSS Version 3.x | MEDIUM | 4.7 |
| OS name | Project name | Version | Score | Severity | Status | Errata | Last updated | Statement |
|---|---|---|---|---|---|---|---|---|
| AlmaLinux 9.2 ESU | kernel | 5.14.0 | 4.7 | MEDIUM | Ignored | 2025-10-28 03:03:06 | This is a local-only race in ethtool’s sysfs path that can panic the kernel only if a network devi... | |
| CentOS 7 ELS | kernel | 3.10.0 | 4.7 | MEDIUM | Ignored | 2024-09-30 10:45:22 | Ignored due to low severity | |
| CentOS 8.4 ELS | kernel | 4.18.0 | 4.7 | MEDIUM | Ignored | 2025-02-26 07:18:43 | Ignored due to low severity | |
| CentOS 8.5 ELS | kernel | 4.18.0 | 4.7 | MEDIUM | Ignored | 2025-02-26 07:18:44 | Ignored due to low severity | |
| CentOS Stream 8 ELS | kernel | 4.18.0 | 4.7 | MEDIUM | Ignored | 2025-02-26 07:18:43 | Ignored due to low severity | |
| CloudLinux 7 ELS | kernel | 3.10.0 | 4.7 | MEDIUM | Ignored | 2024-09-30 10:45:22 | Ignored due to low severity | |
| Oracle Linux 7 ELS | kernel | 3.10.0 | 4.7 | MEDIUM | Ignored | 2024-12-03 12:09:21 | Ignored due to low severity | |
| Oracle Linux 7 ELS | kernel-uek | 5.4.17 | 4.7 | MEDIUM | Ignored | 2025-12-03 19:16:23 | Ignored due to low severity | |
| RHEL 7 ELS | kernel | 3.10.0 | 4.7 | MEDIUM | Ignored | 2025-05-24 02:23:54 | Ignored due to low severity | |
| Ubuntu 16.04 ELS | linux-hwe | 4.15.0 | 4.7 | MEDIUM | Released | CLSA-2024:1731603700 | 2024-11-14 12:16:11 |