CVE-2026-31727In the Linux kernel, the following vulnerability has been resolved: usb: gadget: u_ether: Fix NULL pointer deref in eth_get_drvinfo Commit ec35c1969650 ("usb: gadget: f_ncm: Fix net_device lifecycle…
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In the Linux kernel, the following vulnerability has been resolved: usb: gadget: u_ether: Fix NULL pointer deref in eth_get_drvinfo Commit ec35c1969650 ("usb: gadget: f_ncm: Fix net_device lifecycle with device_move") reparents the gadget device to /sys/devices/virtual during unbind, clearing the gadget pointer. If the userspace tool queries on the surviving interface during this detached window, this leads to a NULL pointer dereference. Unable to handle kernel NULL pointer dereference Call trace: eth_get_drvinfo+0x50/0x90 ethtool_get_drvinfo+0x5c/0x1f0 __dev_ethtool+0xaec/0x1fe0 dev_ethtool+0x134/0x2e0 dev_ioctl+0x338/0x560 Add a NULL check for dev->gadget in eth_get_drvinfo(). When detached, skip copying the fw_version and bus_info strings, which is natively handled by ethtool_get_drvinfo for empty strings.
- CVSS
- 5.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Weakness (CWE)
- CWE-476
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Not given
- NVD analysis
- Modified
- Record last updated
- Jun 19, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
linux linux_kernel linux:linux_kernel | from 6.12.78 before 6.12.81; from 6.18.19 before 6.18.22; from 6.19.9 before 6.19.12; 7.0; 7.0; 7.0; 7.0; 7.0; and 1 more ranges | NVD |
References
- https://git.kernel.org/stable/c/0326429e8ba99892e1d1e115dc8e88e1a3b64e24patch
- https://git.kernel.org/stable/c/7de4d46be40738c7e48e64b5cc0a34aa1e047b0apatch
- https://git.kernel.org/stable/c/7fce959e9be3bf63bb0fdf4b05f9cc42cb289fe2
- https://git.kernel.org/stable/c/a36e5e800b9c93e3e1ffa42f34d38b36775dbceepatch
- https://git.kernel.org/stable/c/e002e92e88e12457373ed096b18716d97e7bbb20patch
- https://git.kernel.org/stable/c/f9f987472f4b8ab177be2b6492a59278ed969479
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.