Vulnerability-Lookup

GHSA-M9HW-68R8-5833

Vulnerability from github – Published: 2026-09-17 18:31 – Updated: 2026-09-17 18:31

Details

In the Linux kernel, the following vulnerability has been resolved:

octeontx2-af: fix NULL deref in NIX TM tree debugfs read path

rvu_dbg_nix_tm_tree_display() dereferences pfvf->sq_ctx without checking whether the SQ context has been allocated. Reading /sys/kernel/debug/octeontx2/nix/tm_tree for a NIX LF whose transmit queues are not set up triggers a kernel oops.

Guard the read path the same way rvu_dbg_nix_tm_tree_write() already does and return -EINVAL with a seq_file message when sq_ctx is NULL.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-90085"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-17T17:16:57Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nocteontx2-af: fix NULL deref in NIX TM tree debugfs read path\n\nrvu_dbg_nix_tm_tree_display() dereferences pfvf-\u003esq_ctx without\nchecking whether the SQ context has been allocated. Reading\n/sys/kernel/debug/octeontx2/nix/tm_tree for a NIX LF whose transmit\nqueues are not set up triggers a kernel oops.\n\nGuard the read path the same way rvu_dbg_nix_tm_tree_write() already\ndoes and return -EINVAL with a seq_file message when sq_ctx is NULL.",
  "id": "GHSA-m9hw-68r8-5833",
  "modified": "2026-09-17T18:31:50Z",
  "published": "2026-09-17T18:31:50Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-90085"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/537e11a1700f64dc6754108f0e1333ad63d4f548"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ec65631bd5ec251cdf67a4919fac7a3149a6e235"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/fb736d733b0a60377cf53010571c261886446fd5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/fdf7358e2688f12eff41290bc45030b7aff0845e"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-90085 (GCVE-0-2026-90085)

Vulnerability from cvelistv5 – Published: 2026-09-17 16:06 – Updated: 2026-09-17 16:06

Title

octeontx2-af: fix NULL deref in NIX TM tree debugfs read path

Summary

In the Linux kernel, the following vulnerability has been resolved: octeontx2-af: fix NULL deref in NIX TM tree debugfs read path rvu_dbg_nix_tm_tree_display() dereferences pfvf->sq_ctx without checking whether the SQ context has been allocated. Reading /sys/kernel/debug/octeontx2/nix/tm_tree for a NIX LF whose transmit queues are not set up triggers a kernel oops. Guard the read path the same way rvu_dbg_nix_tm_tree_write() already does and return -EINVAL with a seq_file message when sq_ctx is NULL.

Severity

No CVSS data available.

Assigner

Linux mitre root

References

4 references

URL	Tags
https://git.kernel.org/stable/c/fb736d733b0a60377…
https://git.kernel.org/stable/c/537e11a1700f64dc6…
https://git.kernel.org/stable/c/fdf7358e2688f12ef…
https://git.kernel.org/stable/c/ec65631bd5ec251cd…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: b907194a5d5bcd3b01d28d095f6a4d9fcd9c5354 , < fb736d733b0a60377cf53010571c261886446fd5 (git) Affected: b907194a5d5bcd3b01d28d095f6a4d9fcd9c5354 , < 537e11a1700f64dc6754108f0e1333ad63d4f548 (git) Affected: b907194a5d5bcd3b01d28d095f6a4d9fcd9c5354 , < fdf7358e2688f12eff41290bc45030b7aff0845e (git) Affected: b907194a5d5bcd3b01d28d095f6a4d9fcd9c5354 , < ec65631bd5ec251cdf67a4919fac7a3149a6e235 (git)
Linux	Linux	Affected: 6.11 Unaffected: 0 , < 6.11 (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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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/marvell/octeontx2/af/rvu_debugfs.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "fb736d733b0a60377cf53010571c261886446fd5",
              "status": "affected",
              "version": "b907194a5d5bcd3b01d28d095f6a4d9fcd9c5354",
              "versionType": "git"
            },
            {
              "lessThan": "537e11a1700f64dc6754108f0e1333ad63d4f548",
              "status": "affected",
              "version": "b907194a5d5bcd3b01d28d095f6a4d9fcd9c5354",
              "versionType": "git"
            },
            {
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              "version": "b907194a5d5bcd3b01d28d095f6a4d9fcd9c5354",
              "versionType": "git"
            }
          ]
        },
        {
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          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.11"
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            {
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              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.110",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.52",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3-rc1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                  "versionStartIncluding": "6.11",
                  "vulnerable": true
                },
                {
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          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nocteontx2-af: fix NULL deref in NIX TM tree debugfs read path\n\nrvu_dbg_nix_tm_tree_display() dereferences pfvf-\u003esq_ctx without\nchecking whether the SQ context has been allocated. Reading\n/sys/kernel/debug/octeontx2/nix/tm_tree for a NIX LF whose transmit\nqueues are not set up triggers a kernel oops.\n\nGuard the read path the same way rvu_dbg_nix_tm_tree_write() already\ndoes and return -EINVAL with a seq_file message when sq_ctx is NULL."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-17T16:06:01.525Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-90085",
    "datePublished": "2026-09-17T16:06:01.525Z",
    "dateReserved": "2026-09-11T19:38:34.785Z",
    "dateUpdated": "2026-09-17T16:06:01.525Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

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Confirmed: The vulnerability has been validated from an analyst's perspective.
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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.

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GHSA-M9HW-68R8-5833

CVE-2026-90085 (GCVE-0-2026-90085)

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