CVE-2026-52947

🗓️ 24 Jun 2026 16:26:05Reported by LinuxType

Fix refcount saturation and use-after-free in qrtr_port_remove by deferring sock_put until after xarray erase and synchronize_rcu.

Reporter	Title	Published	Views	Family All 6
ATTACKERKB	CVE-2026-52947	24 Jun 202616:26	–	attackerkb
Cvelist	CVE-2026-52947 net: qrtr: fix refcount saturation and potential UAF in qrtr_port_remove	24 Jun 202616:26	–	cvelist
Debian CVE	CVE-2026-52947	24 Jun 202616:26	–	debiancve
EUVD	EUVD-2026-38815	24 Jun 202618:32	–	euvd
NVD	CVE-2026-52947	24 Jun 202617:17	–	nvd
Positive Technologies	PT-2026-51841	24 Jun 202600:00	–	ptsecurity

Vulners

CNA

Node

linux linux_kernelRange4.7–5.10.259

linux linux_kernelRange5.11.0–5.15.210

linux linux_kernelRange5.16.0–6.1.176

linux linux_kernelRange6.2.0–6.6.143

linux linux_kernelRange6.7.0–6.12.94

linux linux_kernelRange6.13.0–6.18.36

linux linux_kernelRange6.19.0–7.0.13

linux linux_kernelRange7.1.0≥

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "net/qrtr/af_qrtr.c"
    ],
    "versions": [
      {
        "version": "bdabad3e363d825ddf9679dd431cca0b2c30f881",
        "lessThan": "2aa4c12723fe432e623462a3be42a197a128722b",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "bdabad3e363d825ddf9679dd431cca0b2c30f881",
        "lessThan": "03bfa95e452e2b6ccd76a332060ae4feaf5ad84d",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "bdabad3e363d825ddf9679dd431cca0b2c30f881",
        "lessThan": "474293d90880622fde9d2430fb0165767090f7b3",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "bdabad3e363d825ddf9679dd431cca0b2c30f881",
        "lessThan": "2047c2aa0963bb2872fd722300a15bcb441a4c00",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "bdabad3e363d825ddf9679dd431cca0b2c30f881",
        "lessThan": "7de2d447072be3b1a76793f034432338fc9c494b",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "bdabad3e363d825ddf9679dd431cca0b2c30f881",
        "lessThan": "ab269990ed58143a92a263be1bee626d82ac03da",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "bdabad3e363d825ddf9679dd431cca0b2c30f881",
        "lessThan": "3b20ec8f31e8a6a6782243f473b0abd3463621df",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "bdabad3e363d825ddf9679dd431cca0b2c30f881",
        "lessThan": "a2171131ecda1ed61a594a1eb715e75fdad0fef5",
        "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/qrtr/af_qrtr.c"
    ],
    "versions": [
      {
        "version": "4.7",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "4.7",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.10.259",
        "lessThanOrEqual": "5.10.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.15.210",
        "lessThanOrEqual": "5.15.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.1.176",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.6.143",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12.94",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.36",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.0.13",
        "lessThanOrEqual": "7.0.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.1",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

Source	Link
git	www.git.kernel.org/stable/c/ab269990ed58143a92a263be1bee626d82ac03da
git	www.git.kernel.org/stable/c/2aa4c12723fe432e623462a3be42a197a128722b
git	www.git.kernel.org/stable/c/a2171131ecda1ed61a594a1eb715e75fdad0fef5
git	www.git.kernel.org/stable/c/474293d90880622fde9d2430fb0165767090f7b3
git	www.git.kernel.org/stable/c/03bfa95e452e2b6ccd76a332060ae4feaf5ad84d
git	www.git.kernel.org/stable/c/3b20ec8f31e8a6a6782243f473b0abd3463621df
git	www.git.kernel.org/stable/c/2047c2aa0963bb2872fd722300a15bcb441a4c00
git	www.git.kernel.org/stable/c/7de2d447072be3b1a76793f034432338fc9c494b

24 Jun 2026 17:17Current

5.7Medium risk

Vulners AI Score5.7