CVE-2026-64539

🗓️ 27 Jul 2026 20:10:33Reported by LinuxType

Linux kernel fixes stack out-of-bounds in Bluetooth advertising data if Flags AD does not fit.

Reporter	Title	Published	Views	Family All 5
Cvelist	CVE-2026-64539 Bluetooth: eir: Fix stack OOB write when prepending the Flags AD	27 Jul 202620:10	–	cvelist
Debian CVE	CVE-2026-64539	27 Jul 202620:10	–	debiancve
EUVD	EUVD-2026-49590	27 Jul 202620:10	–	euvd
NVD	CVE-2026-64539	27 Jul 202621:17	–	nvd
Positive Technologies	PT-2026-65214	27 Jul 202600:00	–	ptsecurity

Vulners

CNA

Node

linux linux_kernelRange4.1–6.1.178

linux linux_kernelRange6.2.0–6.12.97

linux linux_kernelRange6.13.0–6.18.40

linux linux_kernelRange6.19.0–7.1.5

linux linux_kernelRange7.2.0–7.2-rc1

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "net/bluetooth/eir.c"
    ],
    "versions": [
      {
        "version": "b44133ff03be30b55f23036e62f403a3f7784fce",
        "lessThan": "0f0b6232af56441d0a2dcb173cc4f8d8aab39014",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "b44133ff03be30b55f23036e62f403a3f7784fce",
        "lessThan": "09301f1fdf2aef8cce34d0c4650c30e7edb1ced9",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "b44133ff03be30b55f23036e62f403a3f7784fce",
        "lessThan": "f1b4df9c260c51726da2e86e19322825fddeefd0",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "b44133ff03be30b55f23036e62f403a3f7784fce",
        "lessThan": "57077eeb586c42f124bc09e018449362223067b3",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "b44133ff03be30b55f23036e62f403a3f7784fce",
        "lessThan": "6f5fb689fdf80bdd143f22a502f9eb1f3c85e286",
        "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/bluetooth/eir.c"
    ],
    "versions": [
      {
        "version": "4.1",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "4.1",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.1.178",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12.97",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.40",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.1.5",
        "lessThanOrEqual": "7.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.2-rc1",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

Source	Link
git	www.git.kernel.org/stable/c/f1b4df9c260c51726da2e86e19322825fddeefd0
git	www.git.kernel.org/stable/c/09301f1fdf2aef8cce34d0c4650c30e7edb1ced9
git	www.git.kernel.org/stable/c/57077eeb586c42f124bc09e018449362223067b3
git	www.git.kernel.org/stable/c/0f0b6232af56441d0a2dcb173cc4f8d8aab39014
git	www.git.kernel.org/stable/c/6f5fb689fdf80bdd143f22a502f9eb1f3c85e286

27 Jul 2026 21:17Current

5.7Medium risk

Vulners AI Score5.7