CVE-2026-31727 (GCVE-0-2026-31727)

Vulnerability from cvelistv5 – Published: 2026-05-01 14:14 – Updated: 2026-05-11 22:14
VLAI?
Title
usb: gadget: u_ether: Fix NULL pointer deref in eth_get_drvinfo
Summary
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.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 93f116c3393a22acab96ad1bef12b2572eb80ca4 , < 0326429e8ba99892e1d1e115dc8e88e1a3b64e24 (git)
Affected: e584cb58a2ea7ff4d3a4bc43d5ca512ed3ecb77d , < a36e5e800b9c93e3e1ffa42f34d38b36775dbcee (git)
Affected: 85acaba2f42b557499bab3608307f17bf13beb69 , < 7de4d46be40738c7e48e64b5cc0a34aa1e047b0a (git)
Affected: ec35c1969650e7cb6c8a91020e568ed46e3551b0 , < e002e92e88e12457373ed096b18716d97e7bbb20 (git)
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Linux Linux Affected: 6.12.78 , < 6.12.81 (semver)
Affected: 6.18.19 , < 6.18.22 (semver)
Affected: 6.19.9 , < 6.19.12 (semver)
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          "programFiles": [
            "drivers/usb/gadget/function/u_ether.c"
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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.