CVE-2026-93046 (GCVE-0-2026-93046)

Vulnerability from cvelistv5 – Published: 2026-09-17 16:10 – Updated: 2026-09-18 17:55
VLAI
Title
software node: Fix software_node_get_reference_args() with index -1
Summary
In the Linux kernel, the following vulnerability has been resolved: software node: Fix software_node_get_reference_args() with index -1 The bounds check for the index passed to software_node_get_reference_args() was failing when passed UINT_MAX, this in turn would lead to an out of bound access in the property array. Fix the bound check to also cover the UINT_MAX case.
Severity
7 (High)
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 142acd739eb6f08c148a96ae8309256f1422ff4b , < 6cde06887487b4febd14658c9a246616abcc0097 (git)
Affected: 56ce76e8d406cc72b89aee7931df5cf3f18db49d , < 0631384eadebc66d92d2dd72d57a0263c3877bee (git)
Affected: 9324127b07dde8529222dc19233aa57ec810856c , < b2fa4e8c7e4a33e02e6aaa8f6df72f84cf4aed75 (git)
Affected: f9397cf7bfb680799fb8c7f717c8f756384c3280 , < 4ebf96d5f834aba7f6d0397db4c421f6078171b9 (git)
Affected: 4b3383110b6df48e0ba5936af2cb68d5eb6bd43b , < 849076df15129e47dd8db751fa18489419ffea56 (git)
Affected: 31e4e12e0e9609850cefd4b2e1adf782f56337d6 , < df5466412b362db7adfa78e3e092fe07ac6769a4 (git)
Affected: 31e4e12e0e9609850cefd4b2e1adf782f56337d6 , < 231bbc04c58f115a505bf3b668ec69ef40a1773b (git)
Affected: 31e4e12e0e9609850cefd4b2e1adf782f56337d6 , < ba3dedcf3bd47017307595a7e54924198f018246 (git)
Affected: 7af18e42bdefe1dba5bcb32555a4d524fd504939 (git)
Affected: 5.10.239 , < 5.10.270 (semver)
Affected: 5.15.186 , < 5.15.221 (semver)
Affected: 6.1.142 , < 6.1.188 (semver)
Affected: 6.6.95 , < 6.6.157 (semver)
Affected: 6.12.35 , < 6.12.110 (semver)
Affected: 6.15.4 , < 6.16 (semver)
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Linux Linux Affected: 6.16
Unaffected: 0 , < 6.16 (semver)
Unaffected: 5.10.270 , ≤ 5.10.* (semver)
Unaffected: 5.15.221 , ≤ 5.15.* (semver)
Unaffected: 6.1.188 , ≤ 6.1.* (semver)
Unaffected: 6.6.157 , ≤ 6.6.* (semver)
Unaffected: 6.12.110 , ≤ 6.12.* (semver)
Unaffected: 6.18.52 , ≤ 6.18.* (semver)
Unaffected: 7.2.6 , ≤ 7.2.* (semver)
Unaffected: 7.3-rc1 , ≤ * (original_commit_for_fix)
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsoftware node: Fix software_node_get_reference_args() with index -1\n\nThe bounds check for the index passed to\nsoftware_node_get_reference_args() was failing when passed UINT_MAX,\nthis in turn would lead to an out of bound access in the property\narray. Fix the bound check to also cover the UINT_MAX case."
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            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
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            {
              "lang": "en",
              "value": "AV:L - The OOB is in software_node_get_reference_args() in drivers/base/swnode.c, reached only from in-kernel fwnode_property_get_reference_args()/fwnode_find_reference() on local probe/consumer paths (led_get \u2192 fwnode_led_get, swnode_gpio_get_reference, IIO/reset/mailbox); the wrapping index is a kernel argument, not bytes from a packet or remote peer.\nAC:H - Only index==UINT_MAX makes (index+1)*sizeof(*ref) wrap to 0 so the bound is skipped. led_get() passes -1 into fwnode_led_get(), but that value is overwritten by fwnode_property_match_string() for every in-tree con_id (v4l2_subdev_get_privacy_led \"privacy\", yogabook \"pen-icon-led\"); other negative errnos do not wrap on 64-bit, so the attacker cannot force UINT_MAX against a live DEV_PROP_REF.\nPR:L - The lookup runs in driver probe and consumer helpers (led_get from v4l2_subdev_get_privacy_led, swnode_find_gpio, fwnode_find_reference) with no capability check; an unprivileged local user can provoke those paths by opening a consumer device node or causing bind, without init-namespace root or user-namespace tricks.\nUI:N - software_node_get_reference_args() runs automatically inside fwnode_find_reference()/led_get()/swnode_gpio_get_reference during probe or consumer get; no other user must mount media, open a file, or confirm a prompt.\nS:U - The wild software_node_ref_args load, fwnode_handle_get() and any oops stay inside the host kernel; no VM, IOMMU or sandbox boundary is crossed.\nC:H - ref=\u0026ref_array[UINT_MAX] reads a full software_node_ref_args (swnode, fwnode, nargs, args[NR_FWNODE_REFERENCE_ARGS]) from wrapped/wild memory; those pointers and u64 args[] are not a few bounded bytes and can be returned to GPIO/LED/IIO consumers.\nI:H - The OOB bytes are used as ref-\u003eswnode/ref-\u003efwnode; software_node_fwnode() or fwnode_handle_get() then software_node_get() \u2192 kobject_get() runs on that pointer, an ops-vtable call and a refcount write at a non-object address \u2014 a control-flow-relevant primitive.\nA:H - The wrapped ref_array[UINT_MAX] pointer is immediately dereferenced (ref-\u003eswnode / ref-\u003efwnode / fwnode_handle_get()), which oopses or panics the kernel (KASAN slab-OOB or wild-pointer fault)."
            }
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        {
          "url": "https://git.kernel.org/stable/c/ba3dedcf3bd47017307595a7e54924198f018246"
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      "title": "software node: Fix software_node_get_reference_args() with index -1",
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-93046",
    "datePublished": "2026-09-17T16:10:37.691Z",
    "dateReserved": "2026-09-17T15:57:05.658Z",
    "dateUpdated": "2026-09-18T17:55:47.049Z",
    "state": "PUBLISHED"
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      "date": "2026-09-30",
      "epss": "0.00156",
      "percentile": "0.04062"
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        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsoftware node: Fix software_node_get_reference_args() with index -1\n\nThe bounds check for the index passed to\nsoftware_node_get_reference_args() was failing when passed UINT_MAX,\nthis in turn would lead to an out of bound access in the property\narray. Fix the bound check to also cover the UINT_MAX case."
          }
        ],
        "id": "CVE-2026-93046",
        "lastModified": "2026-09-18T18:18:19.230",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "HIGH",
                "attackVector": "LOCAL",
                "availabilityImpact": "HIGH",
                "baseScore": 7.0,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 1.0,
              "impactScore": 5.9,
              "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
              "type": "Secondary"
            }
          ]
        },
        "published": "2026-09-17T17:17:57.843",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/0631384eadebc66d92d2dd72d57a0263c3877bee"
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            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/231bbc04c58f115a505bf3b668ec69ef40a1773b"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/4ebf96d5f834aba7f6d0397db4c421f6078171b9"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/6cde06887487b4febd14658c9a246616abcc0097"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/849076df15129e47dd8db751fa18489419ffea56"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/b2fa4e8c7e4a33e02e6aaa8f6df72f84cf4aed75"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/ba3dedcf3bd47017307595a7e54924198f018246"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/df5466412b362db7adfa78e3e092fe07ac6769a4"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Received"
      }
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-09-22T16:25:45Z",
      "cve": "CVE-2026-93046",
      "id": "CVE-2026-93046",
      "initial_release_date": "2026-09-18T00:12:59Z",
      "product_status:known_affected": "30",
      "product_status:known_not_affected": "317",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-93046",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-93046.json",
      "version": "4"
    }
  }
}



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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

Author Source Type Date Other

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.



Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.