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CVE-2026-98591 bpf: Fix bounds check for skb-backed dynptrs

🗓️ 18 Oct 2026 15:19:03Reported by LinuxType 
cvelist
 cvelist
🔗 www.cve.org👁 18 Views

Integer underflow in Linux kernel skb_pointer_if_linear() leads to invalid dynptr.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
cve
CVE
CVE-2026-98591
18 Oct 202615:19
–cve
debiancve
Debian CVE
CVE-2026-98591
18 Oct 202615:19
–debiancve
euvd
EUVD
EUVD-2026-103636
18 Oct 202615:19
–euvd
nvd
NVD
CVE-2026-98591
18 Oct 202616:17
–nvd
osv_debian
osv_debian
DEBIAN-CVE-2026-98591
18 Oct 202617:47
–osv_debian
ptsecurity
Positive Technologies
PT-2026-116810
18 Oct 202600:00
–ptsecurity
[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "include/linux/skbuff.h"
    ],
    "versions": [
      {
        "version": "6f5a630d7c57cd79b1f526a95e757311e32d41e5",
        "lessThan": "1b923538598be768e9f2f258a77a083d00e0c78b",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "6f5a630d7c57cd79b1f526a95e757311e32d41e5",
        "lessThan": "37877a24758068742fef687a7cf5362360dde1d1",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "6f5a630d7c57cd79b1f526a95e757311e32d41e5",
        "lessThan": "1196903a27cac5c929c7517e987a8d159f20c5e5",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "6f5a630d7c57cd79b1f526a95e757311e32d41e5",
        "lessThan": "39ffceaddb10753eac12785dba6ac0673860b4ac",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "6f5a630d7c57cd79b1f526a95e757311e32d41e5",
        "lessThan": "ed6eec97b534979dcf28b40c389cee57bd6561d4",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "include/linux/skbuff.h"
    ],
    "versions": [
      {
        "version": "6.6",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "6.6",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.6.158",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12.112",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.55",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.2.9",
        "lessThanOrEqual": "7.2.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.3",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

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