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CVE-2026-22976 net/sched: sch_qfq: Fix NULL deref when deactivating inactive aggregate in qfq_reset

🗓️ 21 Jan 2026 06:57:23Reported by LinuxType 
cvelist
 cvelist🔗 www.cve.org👁 16 Views

Fix NULL dereference in sch_qfq during deactivation of an inactive aggregate in qfq_reset.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
ATTACKERKB		CVE-2026-22976
21 Jan 202606:57
–attackerkb
Tenable Nessus		Amazon Linux 2023 : bpftool6.12, kernel6.12, kernel6.12-devel (ALAS2023-2026-1488)
30 Mar 202600:00
–nessus
Tenable Nessus		Amazon Linux 2023 : bpftool, kernel, kernel-devel (ALAS2023-2026-1494)
30 Mar 202600:00
–nessus
Tenable Nessus		Amazon Linux 2 : kernel, --advisory ALAS2KERNEL-5.10-2026-113 (ALASKERNEL-5.10-2026-113)
19 Feb 202600:00
–nessus
Tenable Nessus		Amazon Linux 2 : kernel, --advisory ALAS2KERNEL-5.15-2026-098 (ALASKERNEL-5.15-2026-098)
6 Mar 202600:00
–nessus
Tenable Nessus		Debian dla-4475 : ata-modules-5.10.0-35-armmp-di - security update
11 Feb 202600:00
–nessus
Tenable Nessus		Debian dla-4476 : linux-config-6.1 - security update
11 Feb 202600:00
–nessus
Tenable Nessus		Debian dsa-6126 : ata-modules-6.12.31-armmp-di - security update
9 Feb 202600:00
–nessus
Tenable Nessus		Debian dsa-6127 : affs-modules-6.1.0-37-4kc-malta-di - security update
9 Feb 202600:00
–nessus
Tenable Nessus		EulerOS Virtualization 2.12.1 : kernel (EulerOS-SA-2026-2077)
6 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": [
      "net/sched/sch_qfq.c"
    ],
    "versions": [
      {
        "version": "0545a3037773512d3448557ba048cebb73b3e4af",
        "lessThan": "6116a83ec167d3ab1390cded854d237481f41b63",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "0545a3037773512d3448557ba048cebb73b3e4af",
        "lessThan": "0809c4bc06c9c961222df29f2eccfd449304056f",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "0545a3037773512d3448557ba048cebb73b3e4af",
        "lessThan": "cdb24200b043438a144df501f1ebbd926bb1a2c7",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "0545a3037773512d3448557ba048cebb73b3e4af",
        "lessThan": "11bf9134613f6c71fc0ff36c5d8d33856f6ae3bb",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "0545a3037773512d3448557ba048cebb73b3e4af",
        "lessThan": "43497313d0da3e12b5cfcd97aa17bf48ee663f95",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "0545a3037773512d3448557ba048cebb73b3e4af",
        "lessThan": "51ffd447bc37bf1a5776b85523f51d2bc69977f6",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "0545a3037773512d3448557ba048cebb73b3e4af",
        "lessThan": "c1d73b1480235731e35c81df70b08f4714a7d095",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "net/sched/sch_qfq.c"
    ],
    "versions": [
      {
        "version": "3.0",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "3.0",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.10.248",
        "lessThanOrEqual": "5.10.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.15.198",
        "lessThanOrEqual": "5.15.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.1.161",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.6.121",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12.66",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.6",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.19",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

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11 May 2026 21:57Current
EPSS0.00023
null pointer dereferencesch_qfqqfq_resetinactive aggregateshared leaf qdiscroot qdiscqdisc destruction
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