net/sched: act_gate: snapshot parameters with RCU on replace
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.
CVE-2026-23245
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-23245
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "a51c328df3106663879645680609eb49b3ff6444",
"lessThan": "fc98fd8d214693be91253d9a88cdf8e5e143d124",
"versionType": "git"
},
{
"status": "affected",
"version": "a51c328df3106663879645680609eb49b3ff6444",
"lessThan": "8b1251bbf0f10ac745ed74bad4d3b433caa1eeae",
"versionType": "git"
},
{
"status": "affected",
"version": "a51c328df3106663879645680609eb49b3ff6444",
"lessThan": "dfc314d7c767e350f78a46a8f8b134f80e8ad432",
"versionType": "git"
},
{
"status": "affected",
"version": "a51c328df3106663879645680609eb49b3ff6444",
"lessThan": "035d0d09d5ab3ed3e93d18cde2b562a6719eea23",
"versionType": "git"
},
{
"status": "affected",
"version": "a51c328df3106663879645680609eb49b3ff6444",
"lessThan": "04d75529dc0f9be78786162ebab7424af4644df2",
"versionType": "git"
},
{
"status": "affected",
"version": "a51c328df3106663879645680609eb49b3ff6444",
"lessThan": "58b162e318d0243ad2d7d92456c0873f2494c351",
"versionType": "git"
},
{
"status": "affected",
"version": "a51c328df3106663879645680609eb49b3ff6444",
"lessThan": "62413a9c3cb183afb9bb6e94dd68caf4e4145f4c",
"versionType": "git"
}
],
"programFiles": [
"include/net/tc_act/tc_gate.h",
"net/sched/act_gate.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "5.8"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "5.8",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.10.253",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "6.1.167",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.130",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.78",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.18",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "6.19.8",
"versionType": "semver",
"lessThanOrEqual": "6.19.*"
},
{
"status": "unaffected",
"version": "7.0",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"include/net/tc_act/tc_gate.h",
"net/sched/act_gate.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-23245
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #27204 · Revision 1
- Added to Heist Feed
- Publisher date