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CVE-2026-23340 net: sched: avoid qdisc_reset_all_tx_gt() vs dequeue race for lockless qdiscs

🗓️ 25 Mar 2026 10:27:28Reported by LinuxType 
cvelist
 cvelist🔗 www.cve.org👁 16 Views

Linux kernel patch prevents race between queue discipline reset and dequeue for lockless queueing disciplines.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
ATTACKERKB		CVE-2026-23340
25 Mar 202610:27
–attackerkb
Tenable Nessus		Amazon Linux 2023 : bpftool6.12, kernel6.12, kernel6.12-devel (ALAS2023-2026-1543)
7 Apr 202600:00
–nessus
Tenable Nessus		Amazon Linux 2023 : bpftool6.18, kernel6.18, kernel6.18-devel (ALAS2023-2026-1596)
30 Apr 202600:00
–nessus
Tenable Nessus		Amazon Linux 2023 : bpftool, kernel, kernel-devel (ALAS2023-2026-1681)
9 May 202600:00
–nessus
Tenable Nessus		Amazon Linux 2 : kernel, --advisory ALAS2KERNEL-5.15-2026-102 (ALASKERNEL-5.15-2026-102)
9 May 202600:00
–nessus
Tenable Nessus		Debian dla-4561 : linux-config-6.1 - security update
2 May 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		EulerOS 2.0 SP11 : kernel (EulerOS-SA-2026-2209)
9 Jun 202600:00
–nessus
Tenable Nessus		EulerOS 2.0 SP11 : kernel (EulerOS-SA-2026-2247)
9 Jun 202600:00
–nessus
Rows per page
[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "include/net/sch_generic.h"
    ],
    "versions": [
      {
        "version": "6b3ba9146fe64b9bebb6346c9dcfe3b4851de2d7",
        "lessThan": "5bb27ad54d12de67e457d7d251198e361bef835e",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "6b3ba9146fe64b9bebb6346c9dcfe3b4851de2d7",
        "lessThan": "7594467c49bfc2f4644dee0415ac2290db11fa0d",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "6b3ba9146fe64b9bebb6346c9dcfe3b4851de2d7",
        "lessThan": "dbd58b0730aa06ab6ad26079cf9a5b6b58e7e750",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "6b3ba9146fe64b9bebb6346c9dcfe3b4851de2d7",
        "lessThan": "5bc4e69306ed7ae02232eb4c0b23ed621a26d504",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "6b3ba9146fe64b9bebb6346c9dcfe3b4851de2d7",
        "lessThan": "8314944cc3bdeaa5a73e6f8a8cf0d94822e625cb",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "6b3ba9146fe64b9bebb6346c9dcfe3b4851de2d7",
        "lessThan": "c69df4e0524f8de8e176ba389acd83e85f5f49d0",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "6b3ba9146fe64b9bebb6346c9dcfe3b4851de2d7",
        "lessThan": "7f083faf59d14c04e01ec05a7507f036c965acf8",
        "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/sch_generic.h"
    ],
    "versions": [
      {
        "version": "4.16",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "4.16",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.15.203",
        "lessThanOrEqual": "5.15.*",
        "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": "6.12.77",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.17",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.19.7",
        "lessThanOrEqual": "6.19.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.0",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

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11 May 2026 22:04Current
CVSS 3.17.8
EPSS0.00018
Linux kernelqueue disciplinerace conditionlockless queuesdequeue path
16