CVE-2026-23245 (GCVE-0-2026-23245)
Vulnerability from cvelistv5 – Published: 2026-03-18 10:05 – Updated: 2026-03-25 10:20
VLAI?
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
References
Impacted products
| Vendor | Product | Version | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Linux | 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) |
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{
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"programFiles": [
"include/net/tc_act/tc_gate.h",
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"versions": [
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"version": "6.6.130",
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{
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"version": "6.12.78",
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{
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"version": "6.18.18",
"versionType": "semver"
},
{
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"version": "6.19.8",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "7.0-rc3",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
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"value": "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."
}
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"providerMetadata": {
"dateUpdated": "2026-03-25T10:20:33.436Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
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{
"url": "https://git.kernel.org/stable/c/04d75529dc0f9be78786162ebab7424af4644df2"
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"url": "https://git.kernel.org/stable/c/58b162e318d0243ad2d7d92456c0873f2494c351"
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{
"url": "https://git.kernel.org/stable/c/62413a9c3cb183afb9bb6e94dd68caf4e4145f4c"
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],
"title": "net/sched: act_gate: snapshot parameters with RCU on replace",
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"cveId": "CVE-2026-23245",
"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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}
}
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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.
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