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CVE-2026-45839 bpf: reject negative CO-RE accessor indices in bpf_core_parse_spec()

🗓️ 27 May 2026 09:24:37Reported by LinuxType 
cvelist
 cvelist🔗 www.cve.org👁 31 Views

CVE-2026-45839 fixes rejecting negative CO-RE accessor indices in bpf_core_parse_spec to prevent out-of-bounds reads and kernel crashes.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
ATTACKERKB		CVE-2026-45839
27 May 202609:24
–attackerkb
Tenable Nessus		Amazon Linux 2023 : bpftool6.18, kernel6.18, kernel6.18-devel (ALAS2023-2026-1866)
22 Jun 202600:00
–nessus
Tenable Nessus		Amazon Linux 2023 : bpftool, kernel, kernel-devel (ALAS2023-2026-1882)
22 Jun 202600:00
–nessus
Tenable Nessus		Amazon Linux 2 : kernel, --advisory ALAS2KERNEL-5.15-2026-107 (ALASKERNEL-5.15-2026-107)
22 Jun 202600:00
–nessus
Tenable Nessus		Debian dsa-6355 : ata-modules-6.12.90+deb13-armmp-di - security update
21 Jun 202600:00
–nessus
Tenable Nessus		Linux Distros Unpatched Vulnerability : CVE-2026-45839
27 May 202600:00
–nessus
Amazon		Important: kernel6.18
22 Jun 202600:00
–amazon
Amazon		Important: kernel
22 Jun 202600:00
–amazon
Amazon		Important: kernel
22 Jun 202600:00
–amazon
CBLMariner		CVE-2026-45839 affecting package kernel for versions less than 6.6.141.1-1
22 Jun 202621:21
–cbl_mariner
Rows per page
[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "tools/lib/bpf/relo_core.c"
    ],
    "versions": [
      {
        "version": "ddc7c3042614e273044f698d2beab25cc3842d45",
        "lessThan": "a9e777f856cd2f1efc106afc7bf21aef868509d5",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "ddc7c3042614e273044f698d2beab25cc3842d45",
        "lessThan": "669349b4612c26b3d7aacfa99d7174681bd19223",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "ddc7c3042614e273044f698d2beab25cc3842d45",
        "lessThan": "3ff85ae79e1a74baeb916b78a63d821f6d19a994",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "ddc7c3042614e273044f698d2beab25cc3842d45",
        "lessThan": "36a9012f76ba8d9189ae56a1f8bb7c87c07a1f3a",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "ddc7c3042614e273044f698d2beab25cc3842d45",
        "lessThan": "76f2ebaf79a9ae6d0737b87f045fe769e425d78f",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "ddc7c3042614e273044f698d2beab25cc3842d45",
        "lessThan": "99dbab7b5a12d8f58d5b0aa2f7a1fe656a70f4b2",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "ddc7c3042614e273044f698d2beab25cc3842d45",
        "lessThan": "1c22483a2c4bbf747787f328392ca3e68619c4dc",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "tools/lib/bpf/relo_core.c"
    ],
    "versions": [
      {
        "version": "5.4",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "5.4",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.15.209",
        "lessThanOrEqual": "5.15.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.1.175",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.6.141",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12.91",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.33",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.0.10",
        "lessThanOrEqual": "7.0.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.1",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

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14 Jun 2026 17:46Current
EPSS0.00161
co-re accessornegative indicesbpf_core_parse_speckernel crash
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