CVE-2026-98205 (GCVE-0-2026-98205)

Vulnerability from cvelistv5 – Published: 2026-10-06 08:44 – Updated: 2026-10-19 09:15
VLAI
Title
Input: evdev - zero absinfo before partial copy in EVIOCSABS
Summary
In the Linux kernel, the following vulnerability has been resolved: Input: evdev - zero absinfo before partial copy in EVIOCSABS The EVIOCSABS handler copies at most the user supplied ioctl size into an uninitialized on-stack struct input_absinfo: if (copy_from_user(&abs, p, min_t(size_t, size, sizeof(struct input_absinfo)))) The size comes from _IOC_SIZE() of the ioctl command and is therefore fully controlled by userspace. A short size leaves the trailing part of the structure holding whatever was on the kernel stack, and the whole structure is then stored into the device: dev->absinfo[t] = abs; EVIOCGABS hands that back to userspace, disclosing the stale stack bytes. Only the resolution field is currently cleared, which covers the legacy struct layout but not an arbitrarily short size. Zero the structure before the copy so any part not supplied by the caller reads back as zero. The existing resolution fixup is kept, since it also handles a size that partially overlaps that field.
Severity
No CVSS data available.
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 7033 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 448cd1664a573e69f54bfd32f3bb7220212b6cf5 , < c0aebb57b73c7d06ad21731099afe119b113c403 (git)
Affected: 448cd1664a573e69f54bfd32f3bb7220212b6cf5 , < 89b6ffa4bc10c436fa9aecc73be105124cd58a35 (git)
Affected: 448cd1664a573e69f54bfd32f3bb7220212b6cf5 , < e834e134a32b6a5c600fa539bb49146f617743ab (git)
Affected: 448cd1664a573e69f54bfd32f3bb7220212b6cf5 , < af5f7130cbf39e6e12336d0b7a5f6e76e4e1526b (git)
Affected: 448cd1664a573e69f54bfd32f3bb7220212b6cf5 , < 30b853a3d71f16bd0aa66b604bc37dd1254a19b3 (git)
Affected: 448cd1664a573e69f54bfd32f3bb7220212b6cf5 , < 71e5619db11dd6429101bd967230d0321ec5ea26 (git)
Affected: 448cd1664a573e69f54bfd32f3bb7220212b6cf5 , < 3dfe48d5307a1ba22c58231d04257737015569ca (git)
Affected: 448cd1664a573e69f54bfd32f3bb7220212b6cf5 , < 8b852965b8eaf910c314dc346967ed82c8d4f235 (git)
guessed Create a notification for this product.
Linux Linux Affected: 2.6.36
Unaffected: 0 , < 2.6.36 (semver)
Unaffected: 5.10.271 , ≤ 5.10.* (semver)
Unaffected: 5.15.222 , ≤ 5.15.* (semver)
Unaffected: 6.1.189 , ≤ 6.1.* (semver)
Unaffected: 6.6.158 , ≤ 6.6.* (semver)
Unaffected: 6.12.112 , ≤ 6.12.* (semver)
Unaffected: 6.18.54 , ≤ 6.18.* (semver)
Unaffected: 7.2.8 , ≤ 7.2.* (semver)
Unaffected: 7.3 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nInput: evdev - zero absinfo before partial copy in EVIOCSABS\n\nThe EVIOCSABS handler copies at most the user supplied ioctl size into\nan uninitialized on-stack struct input_absinfo:\n\n\tif (copy_from_user(\u0026abs, p, min_t(size_t,\n\t\t\tsize, sizeof(struct input_absinfo))))\n\nThe size comes from _IOC_SIZE() of the ioctl command and is therefore\nfully controlled by userspace. A short size leaves the trailing part of\nthe structure holding whatever was on the kernel stack, and the whole\nstructure is then stored into the device:\n\n\tdev-\u003eabsinfo[t] = abs;\n\nEVIOCGABS hands that back to userspace, disclosing the stale stack\nbytes. Only the resolution field is currently cleared, which covers the\nlegacy struct layout but not an arbitrarily short size.\n\nZero the structure before the copy so any part not supplied by the\ncaller reads back as zero. The existing resolution fixup is kept, since\nit also handles a size that partially overlaps that field."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-19T09:15:36.157Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-98205",
    "datePublished": "2026-10-06T08:44:42.563Z",
    "dateReserved": "2026-09-25T10:25:14.325Z",
    "dateUpdated": "2026-10-19T09:15:36.157Z",
    "state": "PUBLISHED"
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      "title": "Input: evdev - zero absinfo before partial copy in EVIOCSABS",
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            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nInput: evdev - zero absinfo before partial copy in EVIOCSABS\n\nThe EVIOCSABS handler copies at most the user supplied ioctl size into\nan uninitialized on-stack struct input_absinfo:\n\n\tif (copy_from_user(\u0026abs, p, min_t(size_t,\n\t\t\tsize, sizeof(struct input_absinfo))))\n\nThe size comes from _IOC_SIZE() of the ioctl command and is therefore\nfully controlled by userspace. A short size leaves the trailing part of\nthe structure holding whatever was on the kernel stack, and the whole\nstructure is then stored into the device:\n\n\tdev-\u003eabsinfo[t] = abs;\n\nEVIOCGABS hands that back to userspace, disclosing the stale stack\nbytes. Only the resolution field is currently cleared, which covers the\nlegacy struct layout but not an arbitrarily short size.\n\nZero the structure before the copy so any part not supplied by the\ncaller reads back as zero. The existing resolution fixup is kept, since\nit also handles a size that partially overlaps that field."
          }
        ],
        "id": "CVE-2026-98205",
        "lastModified": "2026-10-19T10:18:21.170",
        "metrics": {},
        "published": "2026-10-06T09:18:06.547",
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        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Received"
      }
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    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-10-30T06:55:24+00:00",
      "cve": "CVE-2026-98205",
      "id": "CVE-2026-98205",
      "initial_release_date": "2026-10-06T00:00:00+00:00",
      "product_status:known_affected": "279",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: Input: evdev - zero absinfo before partial copy in EVIOCSABS",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98205.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "low",
      "current_release_date": "2026-10-20T00:00:34Z",
      "cve": "CVE-2026-98205",
      "id": "CVE-2026-98205",
      "initial_release_date": "2026-10-08T16:50:39Z",
      "product_status:known_affected": "301",
      "product_status:known_not_affected": "47",
      "product_status:recommended": "4",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-98205",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/2026/cve-2026-98205.json",
      "version": "3"
    }
  }
}



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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

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How durations are calculated

Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.

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