CVE-2026-23245

🗓️ 18 Mar 2026 10:05:07Reported by LinuxType

Linux kernel net/sched act_gate uses a read copy update snapshot on replace, swaps under a lock, and frees old data while preserving schedule if the entry list is omitted.

Reporter	Title	Published	Views	Family All 50
ATTACKERKB	CVE-2026-23245	18 Mar 202610:05	–	attackerkb
Tenable Nessus	Amazon Linux 2023 : bpftool6.18, kernel6.18, kernel6.18-devel (ALAS2023-2026-1596)	30 Apr 202600:00	–	nessus
Tenable Nessus	Debian dla-4561 : linux-config-6.1 - security update	2 May 202600:00	–	nessus
Tenable Nessus	Debian dla-4606 : ata-modules-5.10.0-43-armmp-di - security update	3 Jun 202600:00	–	nessus
Tenable Nessus	Debian dsa-6238 : ata-modules-6.12.74+deb13+1-armmp-di - security update	30 Apr 202600:00	–	nessus
Tenable Nessus	Debian dsa-6243 : affs-modules-6.1.0-44-4kc-malta-di - security update	2 May 202600:00	–	nessus
Tenable Nessus	openSUSE 16 Security Update : kernel (openSUSE-SU-2026:20826-1)	1 Jun 202600:00	–	nessus
Tenable Nessus	SUSE SLES16 Security Update : kernel (SUSE-SU-2026:21860-1)	2 Jun 202600:00	–	nessus
Tenable Nessus	Linux Distros Unpatched Vulnerability : CVE-2026-23245	18 Mar 202600:00	–	nessus
Amazon	Important: kernel6.18	30 Apr 202600:00	–	amazon

NVD

Vulners

CNA

Node

linux linux_kernelRange5.8.1–5.10.253

linux linux_kernelRange5.11–6.1.167

linux linux_kernelRange6.2–6.6.130

linux linux_kernelRange6.7–6.12.78

linux linux_kernelRange6.13–6.18.18

linux linux_kernelRange6.19–6.19.8

linux linux_kernelMatch5.8-

linux linux_kernelMatch7.0rc1

linux linux_kernelMatch7.0rc2

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "include/net/tc_act/tc_gate.h",
      "net/sched/act_gate.c"
    ],
    "versions": [
      {
        "version": "a51c328df3106663879645680609eb49b3ff6444",
        "lessThan": "fc98fd8d214693be91253d9a88cdf8e5e143d124",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "a51c328df3106663879645680609eb49b3ff6444",
        "lessThan": "8b1251bbf0f10ac745ed74bad4d3b433caa1eeae",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "a51c328df3106663879645680609eb49b3ff6444",
        "lessThan": "dfc314d7c767e350f78a46a8f8b134f80e8ad432",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "a51c328df3106663879645680609eb49b3ff6444",
        "lessThan": "035d0d09d5ab3ed3e93d18cde2b562a6719eea23",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "a51c328df3106663879645680609eb49b3ff6444",
        "lessThan": "04d75529dc0f9be78786162ebab7424af4644df2",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "a51c328df3106663879645680609eb49b3ff6444",
        "lessThan": "58b162e318d0243ad2d7d92456c0873f2494c351",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "a51c328df3106663879645680609eb49b3ff6444",
        "lessThan": "62413a9c3cb183afb9bb6e94dd68caf4e4145f4c",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "include/net/tc_act/tc_gate.h",
      "net/sched/act_gate.c"
    ],
    "versions": [
      {
        "version": "5.8",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "5.8",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.10.253",
        "lessThanOrEqual": "5.10.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.1.167",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.6.130",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12.78",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.18",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.19.8",
        "lessThanOrEqual": "6.19.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.0",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

Source	Link
git	www.git.kernel.org/stable/c/04d75529dc0f9be78786162ebab7424af4644df2
git	www.git.kernel.org/stable/c/58b162e318d0243ad2d7d92456c0873f2494c351
git	www.git.kernel.org/stable/c/8b1251bbf0f10ac745ed74bad4d3b433caa1eeae
git	www.git.kernel.org/stable/c/fc98fd8d214693be91253d9a88cdf8e5e143d124
git	www.git.kernel.org/stable/c/62413a9c3cb183afb9bb6e94dd68caf4e4145f4c
git	www.git.kernel.org/stable/c/035d0d09d5ab3ed3e93d18cde2b562a6719eea23
git	www.git.kernel.org/stable/c/dfc314d7c767e350f78a46a8f8b134f80e8ad432

21 May 2026 18:47Current

5.7Medium risk

Vulners AI Score5.7

CVSS 3.17.8

EPSS0.00018