Vulnerability-Lookup

GHSA-VW2R-FFC4-8XM3

Vulnerability from github – Published: 2026-03-18 12:31 – Updated: 2026-03-25 12:30

Details

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

net/sched: act_gate: snapshot parameters with RCU on replace

The gate action can be replaced while the hrtimer callback or dump path is walking the schedule list.

Convert the parameters to an RCU-protected snapshot and swap updates under tcf_lock, freeing the previous snapshot via call_rcu(). When REPLACE omits the entry list, preserve the existing schedule so the effective state is unchanged.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-23245"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-03-18T11:16:16Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/sched: act_gate: snapshot parameters with RCU on replace\n\nThe gate action can be replaced while the hrtimer callback or dump path is\nwalking the schedule list.\n\nConvert the parameters to an RCU-protected snapshot and swap updates under\ntcf_lock, freeing the previous snapshot via call_rcu(). When REPLACE omits\nthe entry list, preserve the existing schedule so the effective state is\nunchanged.",
  "id": "GHSA-vw2r-ffc4-8xm3",
  "modified": "2026-03-25T12:30:20Z",
  "published": "2026-03-18T12:31:52Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-23245"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/035d0d09d5ab3ed3e93d18cde2b562a6719eea23"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/04d75529dc0f9be78786162ebab7424af4644df2"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/58b162e318d0243ad2d7d92456c0873f2494c351"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/62413a9c3cb183afb9bb6e94dd68caf4e4145f4c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8b1251bbf0f10ac745ed74bad4d3b433caa1eeae"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/dfc314d7c767e350f78a46a8f8b134f80e8ad432"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-23245 (GCVE-0-2026-23245)

Vulnerability from cvelistv5 – Published: 2026-03-18 10:05 – Updated: 2026-03-25 10:20

Title

net/sched: act_gate: snapshot parameters with RCU on replace

Summary

In the Linux kernel, the following vulnerability has been resolved: net/sched: act_gate: snapshot parameters with RCU on replace The gate action can be replaced while the hrtimer callback or dump path is walking the schedule list. Convert the parameters to an RCU-protected snapshot and swap updates under tcf_lock, freeing the previous snapshot via call_rcu(). When REPLACE omits the entry list, preserve the existing schedule so the effective state is unchanged.

Severity ?

No CVSS data available.

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/8b1251bbf0f10ac74…
	https://git.kernel.org/stable/c/dfc314d7c767e350f…
	https://git.kernel.org/stable/c/035d0d09d5ab3ed3e…
	https://git.kernel.org/stable/c/04d75529dc0f9be78…
	https://git.kernel.org/stable/c/58b162e318d0243ad…
	https://git.kernel.org/stable/c/62413a9c3cb183afb…

Impacted products

Vendor

Product

Version

Linux

Affected: a51c328df3106663879645680609eb49b3ff6444 , < 8b1251bbf0f10ac745ed74bad4d3b433caa1eeae (git)
Affected: a51c328df3106663879645680609eb49b3ff6444 , < dfc314d7c767e350f78a46a8f8b134f80e8ad432 (git)
Affected: a51c328df3106663879645680609eb49b3ff6444 , < 035d0d09d5ab3ed3e93d18cde2b562a6719eea23 (git)
Affected: a51c328df3106663879645680609eb49b3ff6444 , < 04d75529dc0f9be78786162ebab7424af4644df2 (git)
Affected: a51c328df3106663879645680609eb49b3ff6444 , < 58b162e318d0243ad2d7d92456c0873f2494c351 (git)
Affected: a51c328df3106663879645680609eb49b3ff6444 , < 62413a9c3cb183afb9bb6e94dd68caf4e4145f4c (git)

Linux

Affected: 5.8
Unaffected: 0 , < 5.8 (semver)
Unaffected: 6.1.167 , ≤ 6.1.* (semver)
Unaffected: 6.6.130 , ≤ 6.6.* (semver)
Unaffected: 6.12.78 , ≤ 6.12.* (semver)
Unaffected: 6.18.18 , ≤ 6.18.* (semver)
Unaffected: 6.19.8 , ≤ 6.19.* (semver)
Unaffected: 7.0-rc3 , ≤ * (original_commit_for_fix)

Show details on NVD website

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      "affected": [
        {
          "defaultStatus": "unaffected",
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          "programFiles": [
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          ],
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          "vendor": "Linux",
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          "vendor": "Linux",
          "versions": [
            {
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              "version": "5.8"
            },
            {
              "lessThan": "5.8",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.167",
              "versionType": "semver"
            },
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              "status": "unaffected",
              "version": "6.6.130",
              "versionType": "semver"
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              "status": "unaffected",
              "version": "6.12.78",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.18",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.19.*",
              "status": "unaffected",
              "version": "6.19.8",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.0-rc3",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
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            {
              "cpeMatch": [
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                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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      "providerMetadata": {
        "dateUpdated": "2026-03-25T10:20:33.436Z",
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          "url": "https://git.kernel.org/stable/c/dfc314d7c767e350f78a46a8f8b134f80e8ad432"
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        {
          "url": "https://git.kernel.org/stable/c/62413a9c3cb183afb9bb6e94dd68caf4e4145f4c"
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    "datePublished": "2026-03-18T10:05:07.406Z",
    "dateReserved": "2026-01-13T15:37:45.989Z",
    "dateUpdated": "2026-03-25T10:20:33.436Z",
    "state": "PUBLISHED"
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}

Sightings

Author	Source	Type	Date

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.

Action not permitted

GHSA-VW2R-FFC4-8XM3

CVE-2026-23245 (GCVE-0-2026-23245)

Tags

Sightings

Nomenclature