CVE-2026-45932

Full vulnerability record from the local CVENow database.
Description

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix tcx/netkit detach permissions when prog fd isn't given This commit fixes a security issue where BPF_PROG_DETACH on tcx or netkit devices could be executed by any user when no program fd was provided, bypassing permission checks. The fix adds a capability check for CAP_NET_ADMIN or CAP_SYS_ADMIN in this case.
Severity
HIGH
CVSS score
7.3 (v3.1)
Vulnerability status
Undergoing Analysis
Source identifier
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Published
2026-05-27 14:17:09.173000
Last modified
2026-10-21 13:18:59.683000
View original CVE JSON
{
  "id": "CVE-2026-45932",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "published": "2026-05-27T14:17:09.173",
  "lastModified": "2026-10-21T13:18:59.683",
  "vulnStatus": "Undergoing Analysis",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Fix tcx/netkit detach permissions when prog fd isn't given\n\nThis commit fixes a security issue where BPF_PROG_DETACH on tcx or\nnetkit devices could be executed by any user when no program fd was\nprovided, bypassing permission checks. The fix adds a capability\ncheck for CAP_NET_ADMIN or CAP_SYS_ADMIN in this case."
    }
  ],
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "programFiles": [
            "include/linux/bpf.h",
            "include/linux/bpf_mprog.h",
            "kernel/bpf/syscall.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "versions": [
            {
              "version": "e420bed025071a623d2720a92bc2245c84757ecb",
              "lessThan": "8e1623e7d61faf16cbadc80550da874303611ff5",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "e420bed025071a623d2720a92bc2245c84757ecb",
              "lessThan": "0c249f523175963b0a746bba673ecebdf6cefd86",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "e420bed025071a623d2720a92bc2245c84757ecb",
              "lessThan": "4e0772cded109c238411f2fac36ac39302758b81",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "e420bed025071a623d2720a92bc2245c84757ecb",
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              "versionType": "git",
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              "versionType": "git",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "programFiles": [
            "include/linux/bpf.h",
            "include/linux/bpf_mprog.h",
            "kernel/bpf/syscall.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "versions": [
            {
              "version": "6.6",
              "status": "affected"
            },
            {
              "version": "0",
              "lessThan": "6.6",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.6.160",
              "lessThanOrEqual": "6.6.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.12.114",
              "lessThanOrEqual": "6.12.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.18.14",
              "lessThanOrEqual": "6.18.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.19.4",
              "lessThanOrEqual": "6.19.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "7.0",
              "lessThanOrEqual": "*",
              "versionType": "original_commit_for_fix",
              "status": "unaffected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:H",
          "baseScore": 7.3,
          "baseSeverity": "HIGH",
          "attackVector": "LOCAL",
          "attackComplexity": "LOW",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "LOW",
          "integrityImpact": "HIGH",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.5
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "versionStartIncluding": "6.6",
              "versionEndExcluding": "6.18.14",
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  "references": [
    {
      "url": "https://git.kernel.org/stable/c/0c249f523175963b0a746bba673ecebdf6cefd86",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
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}