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GHSA-J4C9-HVW2-VG7Q

Vulnerability from github – Published: 2026-10-18 18:32 – Updated: 2026-10-21 15:41

Details

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

netfilter: flowtable: generalize pending status bit

Rename NF_FLOW_HW_PENDING to NF_FLOW_PENDING and use it to inhibit the flowtable GC worker until pending hw offload work has been completed.

Apparently, nf_flow_offload_stats() can schedule work to retrieve stats while the flow is being removed by GC.

And this bit can also be used in a follow up patch to disable GC until the flow has been fully added in both directions.

Revert the reordering done in commit d644b23afe1e ("netfilter: flowtable: publish HW_DEAD after worker is done") to prevent a race between GC and hw offload handler.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-98792"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-10-18T16:17:33Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: flowtable: generalize pending status bit\n\nRename NF_FLOW_HW_PENDING to NF_FLOW_PENDING and use it to inhibit the\nflowtable GC worker until pending hw offload work has been completed.\n\nApparently, nf_flow_offload_stats() can schedule work to retrieve stats\nwhile the flow is being removed by GC.\n\nAnd this bit can also be used in a follow up patch to disable GC until\nthe flow has been fully added in both directions.\n\nRevert the reordering done in commit d644b23afe1e (\"netfilter:\nflowtable: publish HW_DEAD after worker is done\") to prevent a race\nbetween GC and hw offload handler.",
  "id": "GHSA-j4c9-hvw2-vg7q",
  "modified": "2026-10-21T15:41:59Z",
  "published": "2026-10-18T18:32:03Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-98792"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4033e1a9262c57dfbfc594a591a50fcba63c531a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4d52b72f3aa68ad0536444e36530bda75070194c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7c549fb7eecd01fdba7c0d12c01da876ef8a3214"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a2cac45848d1cf31ed190db30f90ba8211e9a8ca"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f7e292f3c8c853f27a1af7eaf3428a0e76fe5fcc"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-98792 (GCVE-0-2026-98792)

Vulnerability from cvelistv5 – Published: 2026-10-18 15:48 – Updated: 2026-10-21 12:57

Title

netfilter: flowtable: generalize pending status bit

Summary

In the Linux kernel, the following vulnerability has been resolved: netfilter: flowtable: generalize pending status bit Rename NF_FLOW_HW_PENDING to NF_FLOW_PENDING and use it to inhibit the flowtable GC worker until pending hw offload work has been completed. Apparently, nf_flow_offload_stats() can schedule work to retrieve stats while the flow is being removed by GC. And this bit can also be used in a follow up patch to disable GC until the flow has been fully added in both directions. Revert the reordering done in commit d644b23afe1e ("netfilter: flowtable: publish HW_DEAD after worker is done") to prevent a race between GC and hw offload handler.

Severity

No CVSS data available.

Assigner

Linux CNA under the mitre root

CNA scorecard D 53/100 over 6820 records in the last 180 days details

References

5 references

URL	Tags
https://git.kernel.org/stable/c/f7e292f3c8c853f27…
https://git.kernel.org/stable/c/4d52b72f3aa68ad05…
https://git.kernel.org/stable/c/4033e1a9262c57dfb…
https://git.kernel.org/stable/c/a2cac45848d1cf31e…
https://git.kernel.org/stable/c/7c549fb7eecd01fdb…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 2c8897953f3b2ff5498f3f275708a742bfcdbc24 , < f7e292f3c8c853f27a1af7eaf3428a0e76fe5fcc (git) Affected: 2c8897953f3b2ff5498f3f275708a742bfcdbc24 , < 4d52b72f3aa68ad0536444e36530bda75070194c (git) Affected: 2c8897953f3b2ff5498f3f275708a742bfcdbc24 , < 4033e1a9262c57dfbfc594a591a50fcba63c531a (git) Affected: 2c8897953f3b2ff5498f3f275708a742bfcdbc24 , < a2cac45848d1cf31ed190db30f90ba8211e9a8ca (git) Affected: 2c8897953f3b2ff5498f3f275708a742bfcdbc24 , < 7c549fb7eecd01fdba7c0d12c01da876ef8a3214 (git)
Linux	Linux	Affected: 5.7 Unaffected: 0 , < 5.7 (semver) Unaffected: 6.6.160 , ≤ 6.6.* (semver) Unaffected: 6.12.113 , ≤ 6.12.* (semver) Unaffected: 6.18.56 , ≤ 6.18.* (semver) Unaffected: 7.2.10 , ≤ 7.2.* (semver) Unaffected: 7.3 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

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{
  "containers": {
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      "affected": [
        {
          "defaultStatus": "unaffected",
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          "programFiles": [
            "include/net/netfilter/nf_flow_table.h",
            "net/netfilter/nf_flow_table_core.c",
            "net/netfilter/nf_flow_table_offload.c",
            "net/sched/act_ct.c"
          ],
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            }
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            "include/net/netfilter/nf_flow_table.h",
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            "net/netfilter/nf_flow_table_offload.c",
            "net/sched/act_ct.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
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              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.160",
              "versionType": "semver"
            },
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              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.113",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.56",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.10",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3",
              "versionType": "original_commit_for_fix"
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          ]
        }
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    "datePublished": "2026-10-18T15:48:31.098Z",
    "dateReserved": "2026-09-25T10:25:14.370Z",
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}

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.

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